Relevant bibliographies by topics / Activated carbon/Methanol

Academic literature on the topic 'Activated carbon/Methanol'

Author: Grafiati
Published: 10 December 2022
Last updated: 29 January 2023

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Journal articles on the topic "Activated carbon/Methanol"

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Palomo, José, José Rodríguez-Mirasol, and Tomás Cordero. "Methanol Dehydration to Dimethyl Ether on Zr-Loaded P-Containing Mesoporous Activated Carbon Catalysts." Materials 12, no. 13 (July 9, 2019): 2204. http://dx.doi.org/10.3390/ma12132204.

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Activated carbons have been prepared by the chemical activation of olive stones with phosphoric acid and loaded with Zr. The addition of Zr to the phosphorus-containing activated carbons resulted in the formation of zirconium phosphate surface groups. Gas phase methanol dehydration has been studied while using the prepared Zr-loaded P-containing activated carbons as catalysts. Carbon catalysts showed high steady-state methanol conversion values, which increased with Zr loading up to a limit that was related to P content. The selectivity towards dimethyl ether was higher than 95% for all Zr loadings. Zirconium phosphate species that were present on catalysts surface were responsible for the catalytic activity.
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Tsoncheva, Tanya, Radostin Nickolov, Svetoslava Vankova, and Dimitar Mehandjiev. "CuO – activated carbon catalysts for methanol decomposition to hydrogen and carbon monoxide." Canadian Journal of Chemistry 81, no. 10 (October 1, 2003): 1096–100. http://dx.doi.org/10.1139/v03-146.

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A comparison of the abilities of CuO – activated carbon catalysts, prepared by different copper precursors and preparation techniques, in the methanol decomposition reaction to carbon monoxide and hydrogen was undertaken. Higher catalytic activity and stability are found for the catalysts obtained from an ammonia solution of copper carbonate. The nature of the catalytic active complex in the samples is also discussed. Key words: methanol decomposition, CuO – activated carbon catalysts, catalytic active complex.
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Girnik, Ilya, Alexandra Grekova, Larisa Gordeeva, and Yuri Aristov. "Activated Carbons as Methanol Adsorbents for a New Cycle “Heat from Cold”." Fibers 8, no. 8 (August 8, 2020): 51. http://dx.doi.org/10.3390/fib8080051.

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Activated carbons are widely used for sustainable technology of adsorptive transformation and storage of heat. Here, we analyze the applicability of twelve commercial carbons and an innovative carbonaceous composite “LiCl confined to multi-wall carbon nanotubes” (LiCl/MWCNT) for a new cycle “Heat from Cold” (HeCol). It has recently been proposed for amplification of low- temperature ambient heat in cold countries. The analysis is made in terms of the methanol mass exchanged and the useful heat generated per cycle; the latter is the main performance indicator of HeCol cycles. The maximum specific useful heat, reaching 990 and 1750 J/g, can be obtained by using carbon Maxsorb III and the composite, respectively. For these materials, methanol adsorption dynamics under typical HeCol conditions are experimentally studied by the large pressure jump method. Before making this analysis, the fine carbon powder is consolidated by either using a binder or just pressing to obtain larger particles (ca. 2 mm). The methanol desorption from the consolidated samples of Maxsorb III at T = 2 °C is faster than for LiCl/MWCNT, and the maximum (initial) useful power reaches (2.5–4.0) kW/kg sorbent. It is very promising for designing compact HeCol units utilizing the carbon Maxsorb III.
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Wang, R. Z., J. P. Jia, Y. H. Zhu, Y. Teng, J. Y. Wu, J. Cheng, and Q. B. Wang. "Study on a New Solid Absorption Refrigeration Pair: Active Carbon Fiber—Methanol." Journal of Solar Energy Engineering 119, no. 3 (August 1, 1997): 214–18. http://dx.doi.org/10.1115/1.2888021.

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Our experiments show that active carbon fiber (ACF) might be a good substitute for activated carbon (AC) as the refrigeration capacity Qf and adsorption time of ACF are three times more and 1/5 ∼ 1/10 of those of normal activated carbon (AC), respectively. The COP for ACF-methanol could be 10 percent ∼ 20 percent higher than that of AC-methanol. Thus ACF-methanol might be a good adsorption refrigeration pair for constructing adsorption refrigerators, especially those for household applications.
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Sugiartha, Nyoman. "Experimentation of an Activated Carbon/Methanol Solar Refrigerator." Logic : Jurnal Rancang Bangun dan Teknologi 20, no. 2 (July 30, 2020): 129–34. http://dx.doi.org/10.31940/logic.v20i2.1822.

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SUDO, YOSHITAKA, and MOTOYUKI SUZUKI. "Regeneration of Furfural on Activated Carbon with Methanol." KAGAKU KOGAKU RONBUNSHU 24, no. 2 (1998): 329–33. http://dx.doi.org/10.1252/kakoronbunshu.24.329.

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Jurkiewicz, Martyna, and Robert Pełech. "Adsorption of 1,2-Dichlorobenzene from the Aqueous Phase onto Activated Carbons and Modified Carbon Nanotubes." International Journal of Molecular Sciences 22, no. 23 (December 5, 2021): 13152. http://dx.doi.org/10.3390/ijms222313152.

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This study aimed to describe the adsorption process of ortho-dichlorobenzene (o-DCB) onto activated carbons (ACs) and modified carbon nanotubes (CNTs) from the aqueous phase. The starting material NC_7000 carbon nanotubes were modified by chlorination (NC_C) and then by the introduction of hydroxyl groups (NC_C_B). The concentration of o-DCB in solutions was performed by UV-VIS spectrophotometry. After adsorption, the activated carbons were regenerated by extraction with organic solvents such as acetone, methanol, ethanol, and 1-propanol; the carbon nanotubes were regenerated by methanol. The degree of adsorbate recovery was determined by gas chromatography (GC) with flame ionization detection, using ethylbenzene as an internal standard. The equilibrium isotherm data of adsorption were satisfactorily fitted by the Langmuir equations. The results indicate that carbon adsorbents are effective porous materials for removing o-DCB from the aqueous phase. Additionally, activated carbons are more regenerative adsorbents than carbon nanotubes. The recoveries of o-DCB from ACs were in the range of 76–85%, whereas the recoveries from CNTs were in the range of 23–46%. Modifications of CNTs affect the improvement of their adsorption properties towards o-DCB compared to unmodified CNTs. However, the introduction of new functional groups on carbon nanotube surfaces makes the regeneration process less effective.
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El-Nabarawy, Th, M. R. Mostafa, and A. M. Youssef. "Activated Carbons Tailored to Remove Different Pollutants from Gas Streams and from Solution." Adsorption Science & Technology 15, no. 1 (February 1997): 59–68. http://dx.doi.org/10.1177/026361749701500106.

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Non-activated carbon ‘A’, physically-activated carbons P1–P4, zinc chloride-activated carbons Z1–Z4 and potassium sulphide-activated carbons K1–K4 were prepared from Maghara coal (Sinai, Egypt). The surface areas of these carbons were determined by investigating the adsorption of carbon dioxide at 298 K and of nitrogen at 77 K. The decolourization powers of the carbons were determined from methylene blue adsorption at 308 K. The adsorption of methanol, benzene, n-hexane, n-octane and α-pinene at 308 K was also determined using equilibrium and flow techniques. The removal of ammonia and phenol from water was investigated on some selected samples. The activated carbons showed high capacities towards the removal of organic pollutants from water and from gas streams via adsorption. Their capacity towards a particular pollutant depends on the method of activation and is related to the textural and/or the chemistry of the carbon surface.
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Jasińska, Jadwiga, Beata Krzyżyńska, and Mieczysław Kozłowski. "Influence of activated carbon modifications on their catalytic activity in methanol and ethanol conversion reactions." Open Chemistry 9, no. 5 (October 1, 2011): 925–31. http://dx.doi.org/10.2478/s11532-011-0078-7.

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AbstractActivated carbons containing different surface functionalities have been investigated as catalysts in conversion reactions of ethanol and methanol. These carbon materials were prepared from Polish brown coal by chemical activation with potassium hydroxide and modified by the oxidation or reaction with ammonia or chlorine. The main process upon ethanol decomposition was its dehydrogenation, while in the process of methanol decomposition only a few samples were catalytically active, and the only product was dimethyl ether (a product of dehydration).
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Khaleel, Wissam H., Abdul Hadi N. Khalifa, and Hilal Tareq Abdulazeez. "Performance Study of Solar Adsorption Refrigeration System Using Activated Carbon - Methanol." Al-Nahrain Journal for Engineering Sciences 21, no. 4 (December 21, 2018): 523–31. http://dx.doi.org/10.29194/njes.21040523.

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The depleting of the conventional sources of energy and the excess use of HCF components lead to the need for new techniques both for conservation of energy sources for the future and for decreasing the its harmful effects on the environment. This study investigated the adsorption capabilities of activated carbon. The adsorption of methanol on this substance was tested for their application in the adsorption refrigeration system based on solar energy. Adsorption refrigeration system has been designed and manufactured with the energy source being solar energy. Methanol/activated carbon pairs have been used in experiments. The present work focused on the performance of the adsorption refrigeration system considering the temperature attained in the evaporator and the cooled spaced cabinet. The amounts of activated carbon used was (8 kg), while the amount of methanol were (1, 1.25, and 1.5) kg. The experiments were done in different days of the year. The amount of adsorption of methanol (as a result of decreasing the evaporator and cooled spaced temperature) was found to depend on the generator pressure and its increase as the primary generator pressure decreases. The best mass of methanol used was (1 kg) which give the lowest temperature obtained at the evaporative surface was ( 3.4 oC ) at the day ( 4/4/2017 ). The results shown that even in cloudy days there is a benefit from using such a system because the temperature attained is enough to start the adsorption process. The lowest temperature obtained at the evaporative surface was (3.4 oC) at the day (4/4/2017) for methanol mass of (1 kg) at an opening time of the valve between the evaporator and the generator (9:30am). The increase of methanol amount used in the experiment led to a good decrease in temperature attained in cooled spaced, but this is related to the time of connecting the evaporator and generator.
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Dissertations / Theses on the topic "Activated carbon/Methanol"

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Tao, Yong. "Development of TiO₂/activated carbon composite photocatalyst for the removal of methanol and hydrogen sulfide from paper mills." [Gainesville, Fla.] : University of Florida, 2006. http://purl.fcla.edu/fcla/etd/UFE0013764.

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You, Ying 1962. "A solar adsorption refrigeration system operating at near atmospheric pressure." Monash University, Gippsland School of Engineering, 2001. http://arrow.monash.edu.au/hdl/1959.1/8740.

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Douss, Néjib. "Etude experimentale de cycles a cascades a adsorption solide." Paris 7, 1988. http://www.theses.fr/1988PA077052.

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Etude experimentale et simulation dynamique de systemes de pompe a chaleur a adsorption solide. Les systemes methanol-charbon actif et eau-zeolite sont etudies. Les conditions de temperature des composants (adsorbeur, condenseur et evaporateur) doivent etre homogenes pour la simulation. On considere les cycles intermittents (simple effet), a double effet et a triple effet (cycle a cascades). Determination d'un coefficient de performance pour la production du froid
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ABDALLAH, KHODR. "Contribution experimentale a l'etude de la cinetique d'adsorption de gaz." Paris, ENSAM, 1989. http://www.theses.fr/1989ENAM0003.

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Une nouvelle technique experimentale a ete mise au point pour etudier la cinetique d'adsorption due aux transferts de masse et de chaleur. Application a l'adsorption du methanol sur la zeolite x et le charbon actif
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Kotdawala, Rasesh R. "Adsorption studies of hazardous air pollutants in microporous adsorbents using statistical mechanical and molecular simulation techniques." Worcester, Mass. : Worcester Polytechnic Institute, 2007. http://www.wpi.edu/Pubs/ETD/Available/etd-050407-112429/.

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Dissertation (Ph.D.) -- Worcester Polytechnic Institute.
Keywords: Activated carbons; Hydrogen cyanide; Methyl ethyl ketone; Adsorption; Mercury; Monte-Carlo; Solvents; Molecular simulations; Zeolites; Water; Methanol; Nanopores. Includes bibliographical references (leaves 147-150).
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Cherif, Hamadi. "Etude et modélisation de méthodes de séparation du méthane et de H2S, sélection d'une méthode favorisant la valorisation de H2S." Thesis, Paris Sciences et Lettres (ComUE), 2016. http://www.theses.fr/2016PSLEM074/document.

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Le biogaz doit être purifié pour devenir un combustible renouvelable. De nombreux traitements actuels ne sont pas satisfaisants car, pour des raisons de coûts les procédés de séparation privilégiés aboutissent souvent au rejet direct ou indirect du sulfure d'hydrogène (H2S) à l’atmosphère, c’est le cas de la séparation à l’eau sous pression. Les objectifs de la thèse portent d’abord sur l’étude et la modélisation des méthodes connues de séparation de l'hydrogène sulfuré du méthane. Les concentrations typiques varient de 200 à 5000 ppm, et la séparation devra réduire la teneur résiduelle en H2S à moins de 1 ppm. Parallèlement seront étudiées les méthodes de traitement de H2S. Une fois la (ou les) méthode(s) de séparation sélectionnée(s), des essais de validation seront effectués sur un système traitant de l’ordre de 85 Nm3/h de méthane où seront injectées des quantités de H2S variant entre 1 et 100 ppm.Cette thèse requiert des modélisations réalistes sous Aspen Plus® ou sous un code équivalent pour établir a priori des efficacités de séparation selon différentes conditions opératoires et en prenant en compte le paramètre température. L’énergie dépensée pour la séparation effective sera un des critères fort de la comparaison, de même que l’économie de matière.Une approche système est indispensable pour étudier la rétroaction de la méthode de valorisation du H2S sur la ou les méthodes séparatives. A priori c’est aussi l’outil Aspen Plus® ou équivalent qui permettra cette approche système.L’étude du procédé sera menée selon la double approche modélisation et expérimentation, pour l’étude expérimentale des méthodes séparatives, l’échelle du banc sera semi-industrielle et le banc permettra d’étudier les méthodes de séparation jusqu’à -90°C
Biogas must be purified for becoming a renewable fuel. At now, the most part of the purification techniques are not satisfactory because they imply hydrogen sulfides (H2S) rejection to the atmosphere. One example of these methods is the treatment with high pressure water. The first objective of the thesis is modeling the conventional methods for separating H2S from methane. Typical concentrations of H2S in methane vary from 200 to 5000 pm. Separation methods must decrease the concentration of H2S in methane to less than 1 ppm. At the same time, methods for H2S treatment will be studied.Once the most appropriated separation methods will be selected, some test will be carried out on a pilot plant capable of treating 85 Nm3/h of methane, where quantities of H2S ranging from 1 and 100 ppm will be injected. These tests will allow validating the modeling of the separation process. On the basis of the obtained results, a specific test bench will be conceived and constructed for validating the selected process.The thesis work requires simulating the separation process using the software Aspen Plus® or an equivalent one. The effectiveness of different operative conditions will be tested, varying also the parameter temperature. The energy necessary for the separation will be one of the most important criteria for the comparison, as well as the mass consumption of the different fluids involved in the process.A system approach is fundamental for evaluating the backward effect of the H2S valorization method on the separation techniques. The process simulator (Aspen Plus® or equivalent) will allow the system approach.The study will involve modeling and experimental parts. The experimental part will be carried out taking advantage of a semi-industrial size test bench, allowing studying the separation methods down to -90°C
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Zhao, Yongling. "Study of activated carbon/methanol adsorption refrigeration tube and system integration." Thesis, 2011. http://hdl.handle.net/2440/66346.

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Solid adsorption refrigeration systems are attracting much research interest because they have numerous advantages, such as using low grade thermal energy and being environment friendly. In recent decades many efforts have been put into developing various prototypes. The adsorption refrigeration tube (ART) is one such development. Through better system integration, a module consisting of a number of individually working ARTs can achieve significant refrigeration capacity, which may solve the vacuum leaking problem that besets large adsorption systems. In order to propose a feasible ART, this thesis undertakes a study of adsorptive properties of three types of activated carbon/methanol working pairs and modelling of the adsorption refrigeration cycle. In this examination of adsorptive properties, three activated carbon samples, Calgon 207C, 207EA and WS-480, were used to test and determine their pressure-temperature-concentration (P−T−x) relationship with methanol as the adsorbate. Based on the experimental data, three adsorption state equations, Langmuir equation, Freundlich equation and Dubinin-Astakov (D-A) equation, were compared in terms of their agreement with experimental data and their format impact on calculating coefficient of performance (COP) and refrigeration output (Qr), if one of the formats was used for presenting experimental data. Moreover, a sensitivity analysis was conducted to reveal the parameters’ sensitivity to calculation of COP and Qr. It was found in this study that the D-A equation is the best state equation for presenting the adsorptive properties of the tested activated carbon/methanol working pairs in terms of the best agreement of P−T−x correlation and least sensitivities to parameters’ errors. A1-D dynamic model was established and validated experimentally, in which a local non-equilibrium treatment and dynamic boundary condition were introduced to the mathematical model. Regarding thermal non-equilibrium treatment, the temperatures of the local solid phase (activated carbon and adsorbed methanol) and local fluid phase were treated separately. Due to this non-equilibrium treatment, i.e. a two temperature treatment, convective heat transfer within the transport pores of activated carbon can be considered in the mathematical model. Moreover, a mathematically defined function was introduced to present the transient pressure process at the beginning of an adsorption process. Using this function, the temperature jump phenomenon can be well predicted by the mathematical model. After the mathematical model had been established and validated, a parametric analysis was conducted using the mathematical model. The effects of the cylindrical activated carbon column’s diameter and evaporating temperature on cycle time, COP and specific cooling power (SCP) were examined. Furthermore, a case study of cycle time optimisation was conducted. Finally, based on the parametric analysis, a practical solution using integrated groups of individual ART was proposed for home or domestic application. A preliminary economics analysis was also conducted to evaluate the potential of this application.
Thesis (M.Eng.Sc.) -- University of Adelaide, School of Mechanical Engineering, 2011
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應志鴻. "Methanol Carbonylation on Ni/C Catalyst Prepared with Half-Activated Carbon." Thesis, 2001. http://ndltd.ncl.edu.tw/handle/46657056346854886523.

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碩士
國立臺灣科技大學
化學工程系
89
Can sugar was used in this research as the raw material to prepare activated carbon. The carbon was then applied as a support to prepare Ni/AC catalyst. The activity and the stability of the catalyst in the carbonylation of methanol were subsequently examined. A method described as chemical activation was employed in this research to prepare the activated carbon. A mixture of ammonium phosphate [(NH4)2HPO4] and ammonium sulfate [(NH4)2SO4] was used as the activation agent. Activation temperature and composition of the activation agent were the variables studied in carbon preparation while reaction temperature and the time on stream were the variables investigated in catalyst activity tests. Instruments such as BET, XRD, TPD, TGA, DTA, EA, SEM&EDS, and FTIR were used to characterize the catalysts and the support (activated carbon). The characterizations revealed that activated carbon of lower surface area and pore volume and higher average pore size would be obtained if the activation agent employed in the preparation contained ammonium phosphate. Activated carbon of the maximum surface area and pore volume and minimum average pore size would be obtained by activating can sugar at 700℃. Activated carbon of more acid sites and greater acid strength would be obtained if the activation agent employed in the preparation contained ammonium phosphate. The characteristic peak of graphite was the only peak appeared in the XRD spectra of Ni/AC catalysts, showing nickel, sulfur and phosphorus were well dispersed on the catalysts. The peak appeared on the carbon activated at as low as 400℃, revealing the temperature was sufficient for the formation of activated carbon. Increasing the activation temperature would result in an increase in carbon content and decreases in hydrogen, oxygen, nitrogen, and sulfur contents in the carbon. The presence of ammonium phosphate in the activation agent and the use of high activation temperature both could result in carbon of finer sizes. The presence of ammonium phosphate in the activation agent could also enhance the bond strength between the sulfur and the carbon. The optimum temperature for activation of cane sugar was between 600 and 700℃. Using the carbon prepared at the temperature could give a Ni/AC catalyst of the highest activity in converting methanol to methyl acetate. The highest selectivity of methyl acetate could be found on the Ni/AC catalyst with the carbon being activated at 600℃. The conversion of methanol and the selectivity of methyl acetate were both increased with the content of ammonium phosphate in the activation agent. The conversion of methanol increased with the reaction temperature and started to leveled off when the reaction temperature reached 250℃. Maximum selectivity of methyl acetate was found at a reaction temperature of 200℃. Stability tests showed that the catalyst prepared from the carbon activated with the agent containing ammonium phosphate deactivated at a slower rate in comparison with those without ammonium phosphate. The catalysts could also be stabilized in a shorter time after the reaction.
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Huang, Cheese, and 黃其思. "Catalytic Reaction of Acetonitrile and Methanol over PAN Based Activated Carbon Fiber." Thesis, 2002. http://ndltd.ncl.edu.tw/handle/85275497185941794912.

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碩士
靜宜大學
應用化學系
90
Catalytic synthesis of propionitrile from methanol and acetonitrile was achieved by using PAN based activated carbon fiber containing sodium. The activity of the catalysts depends on the source of sodium. The catalyst shows the highest activity when the Na2CO3 was used as a raw material for the preparation of catalysts. The conversion of acetonitrile reaches 75%, and the selectivity of propionitrile is 80%. The activity site of catalyst is sodium. The activity of catalysts deactive with increasing reaction time. The reason of deactivation was by the sodium losing. The activity of the catalysts can be enhanced upon the addition of silver. The catalytic activity of catalysts correlates well with the adsorption capacities of methanol and acetonitrile on the catalysts surface measured by the TPD method. A small amount of silver addition resulted an increasing in catalyst surface area. The adsorption capacities of methanol and acetonitrile were enhanced by the addition of silver.
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Cai, Zong-Kai, and 蔡宗凱. "A Comparison study of activated carbon and Carbon Fiber Supported Nickel Catalysts for the Carbonylation of Methanol." Thesis, 1997. http://ndltd.ncl.edu.tw/handle/89493634947683459526.

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Book chapters on the topic "Activated carbon/Methanol"

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Yun, Seok Min, Ju Wan Kim, Hang Kyo Jin, Young Ho Kim, and Young Seak Lee. "Methane Storage on Surface Modified Activated Carbons." In Solid State Phenomena, 73–76. Stafa: Trans Tech Publications Ltd., 2008. http://dx.doi.org/10.4028/3-908451-48-5.73.

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Sakoda, Akiyoshi, Nobuki Oka, and Motoyuki Suzuki. "Adsorption of Methane onto Activated Carbon by a Graphite Crystal Aggregate Model." In The Kluwer International Series in Engineering and Computer Science, 781–88. Boston, MA: Springer US, 1996. http://dx.doi.org/10.1007/978-1-4613-1375-5_97.

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PONS, M., and Ph GRENIER. "SOLAR ICE MAKER WORKING WITH ACTIVATED CARBON-METHANOL ADSORBENT-ADSORBATE PAIR." In Intersol Eighty Five, 731–35. Elsevier, 1986. http://dx.doi.org/10.1016/b978-0-08-033177-5.50145-9.

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Su, Aiting, and Guojie Zhang. "Dry methane reforming over KMnO4-modified activated carbon." In Advances in Energy Equipment Science and Engineering, 1597–601. CRC Press, 2015. http://dx.doi.org/10.1201/b19126-312.

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Taber, Douglass. "C-C Single Bond Construction." In Organic Synthesis. Oxford University Press, 2011. http://dx.doi.org/10.1093/oso/9780199764549.003.0019.

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Several remarkable one-carbon homologations have recently appeared. André B. Charette of the Université de Montréal reported (J. Org. Chem. 2008, 73, 8097) the alkylation of diiodomethane with alkyl iodides such as 1, to give the diiodoalkane 2. Carlo Punta and the late Ombretta Porta of the Politecnico di Milano effected (Organic Lett. 2008, 10, 5063) reductive condensation of an amine 3 with an aldehyde 4 in the presence of methanol, to give the amino alcohol 5. Timothy S. Snowden of the University of Alabama showed (Organic Lett. 2008, 10, 3853) that NaBH4 reduced the carbinol 7, easily prepared from the aldehyde 6, to the acid 8. Ram N. Ram of the Indian Institute of Technology, Delhi found (J. Org. Chem. 2008, 73, 5633) that CuCl reduced 7 to the chloro ketone 9. Kálmán J. Szabó of Stockholm University extended (Chem. Commun. 2008, 3420) his elegant work on in situ borinate formation, coupling, in one pot, the allylic alcohol 10 with the acetal 11 (hydrolysed in situ) to deliver the alcohol 12 as a single diastereomer. Samir Z. Zard of the Ecole Polytechnique developed (J. Am. Chem. Soc. 2008, 130, 8898) the 6-fluoropyridyloxy ether of 13 as an effective radical leaving group, enabling efficient coupling with 14, activated by dilauroyl peroxide, to give 15. Shu Kobayashi of the University of Tokyo established (Chem. Commun. 2008, 6354) that the anion of the sulfonyl imidate 17 participated in direct Pd-mediated allylic coupling with the carbonate 16. The product sulfonyl imidate 18 is itself of medicinal interest. It is also easily converted to other functional groups, including the aldehyde 19. Jianliang Xiao of the University of Liverpool found (J. Am. Chem. Soc. 2008, 130, 10510) that Pd-mediated coupling of an aldehyde 21 in the presence of pyrrolidine led to the ketone 22. The reaction is probably proceeding via Heck coupling of the aryl halide with the in situ generated enamine. Alois Fürstner of the Max Planck Institut, Mülheim observed (J. Am. Chem. Soc. 2008, 130, 8773) that in the presence of the simple catalyst Fe(acac)3 a Grignard reagent 24 coupled smoothly with an aryl halide 23 to give 25.
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Matos, Juan, Karína Díaz, Víctor García, Caríbay Urbina de Navarro, Alberto Albornoz, and Joaquín L. Brito. "Activated Carbon Supported Ni-Ca: Influence of Reaction Parameters on Activity and Stability of Catalyst on Methane Reformation." In Science and Technology in Catalysis 2006, 261–64. Elsevier, 2007. http://dx.doi.org/10.1016/b978-0-444-53202-2.50054-3.

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Conference papers on the topic "Activated carbon/Methanol"

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Williams, Roger S., and H. Ray Johnson. "Impact of Methanol Fuel Blends on Activated Carbon Performance." In International Congress & Exposition. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 1991. http://dx.doi.org/10.4271/910563.

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Paul, Rajib, Tyler Voskuilen, Dmitry Zemlyanov, Timothée L. Pourpoint, and Timothy S. Fisher. "Chemically B-N Modified Activated Carbon and its Thermal Stability and Desorption Enthalpy With Methanol." In ASME 2012 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/imece2012-89531.

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A chemical modification of activated carbon is demonstrated through boron and nitrogen incorporation via microwave-assisted heating. The surface modification of the activated carbon was imaged by scanning electron microscope. The crystallinity of the material was quantified by X–ray diffraction, and the chemical content as well as bonding environment were investigated using X-ray photoelectron and Raman microscopies. The observed increment in desorption enthalpy of modified activated carbon with methanol as measured through differential scanning calorimetry and its superior thermal stability in air as measured by thermogravimetric analysis suggest that the modified material is a promising candidate for efficient sorption processes in waste thermal and solar energy driven cycles.
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Feng, Bo, Cheng-Yang Wang, and Bin Zhu. "Novel AC-M-SCC Anode Materials for Solid Oxide Fuel Cells Using Methanol at Intermediate or Low Temperature." In ASME 2005 3rd International Conference on Fuel Cell Science, Engineering and Technology. ASMEDC, 2005. http://dx.doi.org/10.1115/fuelcell2005-74140.

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In this paper, novel anode materials for solid oxide fuel cells which can directly operate liquid fuels at intermediate or low temperature were investigated. These materials were based on the activated carbons supported transition metal catalysts (AC-M) and the solid carbonate-ceria composite (SCC) materials, which were prepared via the sol-gel route. The SCCs possess both oxide-ion and proton conductivity, being used as multi-ion conductors. Activated carbons supported transition metals were used to improve the characters of anode materials and especially to enhance the anode catalyst function to liquid fuels, e.g., methanol. The internal reforming of liquid fuels was proved. There is no external reforming system needed. We used also the chemical methods to improve the commercial activated carbons. The microstructure, conductivity and electrochemical properties of anode materials were investigated as functions of the activated carbon pre-treating condition. Using these novel materials, the power intensity of 0.2 W/cm2 was achieved for fuel cells directly operating the methanol at 600 °C.
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Yanti, Fusia Mirda, Asmi Rima Juwita, Novio Valentino, S. D. Sumbogo Murti, Astri Pertiwi, Nurdiah Rahmawati, Tyas Puspita Rini, et al. "Preliminary study of activated carbon as support catalyst for low cost methanol production from biomass syngas." In THE 5TH INTERNATIONAL CONFERENCE ON INDUSTRIAL, MECHANICAL, ELECTRICAL, AND CHEMICAL ENGINEERING 2019 (ICIMECE 2019). AIP Publishing, 2020. http://dx.doi.org/10.1063/5.0000869.

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Chekirou, Wassila, Nahman Boukheit, and Tahar Kerbache. "Effect of coupled heat and mass transfers on the performance of adsorptive solar refrigerator using the pair activated carbon / methanol." In 2008 Second International Conference on Thermal Issues in Emerging Technologies (ThETA). IEEE, 2008. http://dx.doi.org/10.1109/theta.2008.5167173.

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Sharma, Ajit, and Byeong-Kyu Lee. "Methanol an Energy Source Production by Reduction of CO2 Under Visible Light Irradiation Using Fe2o3/TiO2 Nanotube Immobilized Activated Carbon Fiber." In 10TH International Conference on Sustainable Energy and Environmental Protection. University of Maribor Press, 2017. http://dx.doi.org/10.18690/978-961-286-056-1.4.

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Verma, A., A. K. Jha, and S. Basu. "Evaluation of an Alkaline Fuel Cell for Multi-Fuel System." In ASME 2004 2nd International Conference on Fuel Cell Science, Engineering and Technology. ASMEDC, 2004. http://dx.doi.org/10.1115/fuelcell2004-2538.

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The performance of an alkaline fuel cell is investigated using three different fuels, e g., methanol, ethanol and sodium borohydride. Pt/C/Ni was used as anode whereas Mn/C/Ni was used as standard (Electro-Chem-Technic, UK) cathode for all the fuels. Thus, the alkaline fuel cell is used for multi-fuel system. Fresh mixture of electrolyte, potassium hydroxide (5M), and fuel (2M) was fed to and withdrawn from the AFC at a rate of 1 ml/min. The anode was prepared by dispersing platinum and activated carbon in Nafion® (DuPont USA) dispersion and placing it onto a carbon paper (Lydall, USA). Finally prepared anode sheet was pressed onto Ni mesh and sintered to produce the required anode. The maximum power density of 16.5 mW/cm2 is obtained at 28 mA/cm2 of current density for sodium borohydride at 25 °C. Whereas, methanol produces 31.5 mW/cm2 of maximum power density at 44 mA/cm2 of current density at 60 °C.
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Anyanwu, Emmanuel E., and Nnamdi V. Ogueke. "Transient Analysis and Performance Prediction of a Solid Adsorption Solar Refrigerator." In ASME 2005 International Solar Energy Conference. ASMEDC, 2005. http://dx.doi.org/10.1115/isec2005-76211.

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The transient analysis and performance prediction of a solid adsorption solar refrigerator, using activated carbon/methanol adsorbent/adsorbate pair are presented. The mathematical model is based on the thermodynamics of the adsorption process, heat transfer in the collector plate/tube arrangement, and heat and mass transfers within the adsorbent/adsorbate pair. Its numerical model developed from finite element transformation of the resulting equations computes the collector plate and tube temperatures to within 5°C. The condensate yield and coefficient of performance, COP were predicted to within 5% and 9%, respectively. The resulting evaporator water temperature was also predicted to within 4%. Thus the model is considered a useful design tool for the refrigerator to avoid costly experimentation.
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Sharafianardakani, Amirhossein, and Majid Bahrami. "A Quasi Steady State Model for Adsorption Cooling Systems: Automotive Applications." In ASME 2012 6th International Conference on Energy Sustainability collocated with the ASME 2012 10th International Conference on Fuel Cell Science, Engineering and Technology. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/es2012-91362.

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In this study, an analytical quasi-steady state thermodynamic cycle of an adsorption cooling system (ACS) for automotive applications is presented which allows evaluating impact of different parameters on the ACS performance as well as effects of various working pairs: zeolite 13X/water, zeolite 4A/water and activated carbon-35/methanol. A comprehensive parametric study has been performed to investigate effects of temperature variation of the evaporator and condenser as well as the ICE exhaust gas temperature on the COP, cooling load produced by the evaporator and entropy generation of ACS with (or without) the heat recovery cycle (HRC). The results show that using the heat recovery cycle in the ACS can increase the COP of system up to 41% for zeolite 13X/water pair at the base-line condition. In addition, the parametric study shows that increasing regeneration and evaporation temperature increase the COP and entropy generation of ACS while increasing condensation temperature has negative effect on the COP and entropy generation. Finally, based on our modeling results, the ACS with the heat recovery cycle (HRC) and zeolite 13X/water pair are proposed for the automotive A/C applications.
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Ozalp, Nesrin, and Vidyasagar Shilapuram. "Characterization of Activated Carbon for Carbon Laden Flows in a Solar Reactor." In ASME/JSME 2011 8th Thermal Engineering Joint Conference. ASMEDC, 2011. http://dx.doi.org/10.1115/ajtec2011-44381.

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Carbon is not only a major product of the methane decomposition but also a catalyst for the heterogeneous methane decomposition reaction. It is highly desirable that the morphology and surface properties of the product carbon be controlled to maximize their catalytic effects. In this paper, we characterize the physical properties of two activated carbon samples by sizes, and crystallographic structures using scanning electron microscope, x-ray diffraction, particle size analyzer, and surface area measurement. The paper also includes high temperature thermogravimetric experiment results on the carbon–hydrogen reaction to show if the injected carbon particles reacts with the formed hydrogen, which has not been studied in solar thermal hydrocarbon decomposition before. Results show that carbon does not react with hydrogen to form methane or any other intermediate compounds up until 900°C, which explains the favorable effect of carbon laden flow experiments for catalytic methane decomposition at lower temperatures. These results will be used to identify the optimal operating conditions for our solar reactor.
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Reports on the topic "Activated carbon/Methanol"

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Ivanova, Radostina, Momtchil Dimotrov, Daniela Kovacheva, Boyko Tsyntsarski, Ivanka Spassova, Nikolay Velinov, Daniela Paneva, and Tanya Tsoncheva. Zinc Ferrite Nanoparticles Hosted in Activated Carbon from Waste Biomass as Catalyst for Methanol Decomposition. "Prof. Marin Drinov" Publishing House of Bulgarian Academy of Sciences, March 2021. http://dx.doi.org/10.7546/crabs.2021.03.05.

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Asvapathanagul, Pitiporn, Leanne Deocampo, and Nicholas Banuelos. Biological Hydrogen Gas Production from Food Waste as a Sustainable Fuel for Future Transportation. Mineta Transportation Institute, July 2022. http://dx.doi.org/10.31979/mti.2021.2141.

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In the global search for the right alternative energy sources for a more sustainable future, hydrogen production has stood out as a strong contender. Hydrogen gas (H2) is well-known as one of the cleanest and most sustainable energy sources, one that mainly yields only water vapor as a byproduct. Additionally, H2 generates triple the amount of energy compared to hydrocarbon fuels. H2 can be synthesized from several technologies, but currently only 1% of H2 production is generated from biomass. Biological H2 production generated from anaerobic digestion is a fraction of the 1%. This study aims to enhance biological H2 production from anaerobic digesters by increasing H2 forming microbial abundance using batch experiments. Carbon substrate availability and conversion in the anaerobic processes were achieved by chemical oxygen demand and volatile fatty acids analysis. The capability of the matrix to neutralize acids in the reactors was assessed using alkalinity assay, and ammonium toxicity was monitored by ammonium measurements. H2 content was also investigated throughout the study. The study's results demonstrate two critical outcomes, (i) food waste as substrate yielded the highest H2 gas fraction in biogas compared to other substrates fed (primary sludge, waste activated sludge and mixed sludge with or without food waste), and (ii) under normal operating condition of anaerobic digesters, increasing hydrogen forming bacterial populations, including Clostridium spp., Lactococcus spp. and Lactobacillus spp. did not prolong biological H2 recovery due to H2 being taken up by other bacteria for methane (CH4) formation. Our experiment was operated under the most optimal condition for CH4 formation as suggested by wastewater operational manuals. Therefore, CH4-forming bacteria possessed more advantages than other microbial populations, including H2-forming groups, and rapidly utilized H2 prior to methane synthesis. This study demonstrates H2 energy renewed from food waste anaerobic digestion systems delivers opportunities to maximize California’s cap-and-trade program through zero carbon fuel production and utilization.
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Asvapathanagul, Pitiporn, Leanne Deocampo, and Nicholas Banuelos. Biological Hydrogen Gas Production from Food Waste as a Sustainable Fuel for Future Transportation. Mineta Transportation Institute, July 2022. http://dx.doi.org/10.31979/mti.2022.2141.

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In the global search for the right alternative energy sources for a more sustainable future, hydrogen production has stood out as a strong contender. Hydrogen gas (H2) is well-known as one of the cleanest and most sustainable energy sources, one that mainly yields only water vapor as a byproduct. Additionally, H2 generates triple the amount of energy compared to hydrocarbon fuels. H2 can be synthesized from several technologies, but currently only 1% of H2 production is generated from biomass. Biological H2 production generated from anaerobic digestion is a fraction of the 1%. This study aims to enhance biological H2 production from anaerobic digesters by increasing H2 forming microbial abundance using batch experiments. Carbon substrate availability and conversion in the anaerobic processes were achieved by chemical oxygen demand and volatile fatty acids analysis. The capability of the matrix to neutralize acids in the reactors was assessed using alkalinity assay, and ammonium toxicity was monitored by ammonium measurements. H2 content was also investigated throughout the study. The study's results demonstrate two critical outcomes, (i) food waste as substrate yielded the highest H2 gas fraction in biogas compared to other substrates fed (primary sludge, waste activated sludge and mixed sludge with or without food waste), and (ii) under normal operating condition of anaerobic digesters, increasing hydrogen forming bacterial populations, including Clostridium spp., Lactococcus spp. and Lactobacillus spp. did not prolong biological H2 recovery due to H2 being taken up by other bacteria for methane (CH4) formation. Our experiment was operated under the most optimal condition for CH4 formation as suggested by wastewater operational manuals. Therefore, CH4-forming bacteria possessed more advantages than other microbial populations, including H2-forming groups, and rapidly utilized H2 prior to methane synthesis. This study demonstrates H2 energy renewed from food waste anaerobic digestion systems delivers opportunities to maximize California’s cap-and-trade program through zero carbon fuel production and utilization.
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