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Articles de revues sur le sujet « Alcohols reforming »

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Auteur : Grafiati
Publié le 11 mars 2023

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1

Buffoni, Ivana, Gerardo Santori, Francisco Pompeo et Nora Nichio. « Steam Reforming of Alcohols for Hydrogen Production ». Current Catalysis 3, no 2 (31 août 2014) : 220–28. http://dx.doi.org/10.2174/2211544702666131224224059.

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2

Tartakovsky, Leonid, Vladimir Baibikov, Marcel Gutman, Arnon Poran et Mark Veinblat. « Thermo-Chemical Recuperation as an Efficient Way of Engine's Waste Heat Recovery ». Applied Mechanics and Materials 659 (octobre 2014) : 256–61. http://dx.doi.org/10.4028/www.scientific.net/amm.659.256.

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It is known that about 30% of fuel energy introduced to an internal combustion engine (ICE) is wasted with engine exhaust gases. One of the promising ways of waste heat recovery is thermo-chemical recuperation (TCR). For the purpose of TCR realization, in principle any fuel may be used. However, utilization of renewable bio-alcohols, especially ethanol or methanol is the most favorable. The advantages of TCR over turbocharging are in the fact that its energy transfer is not limited by isentropic expansion and that the reforming process improves the fuel properties. A comprehensive theoretical analysis of the ICE with TCR was carried out using the developed model for simulation of the joint operation of ICE with alcohol reformer, when the ICE is fed by the alcohol reforming products and the energy of the exhaust gases is utilized to sustain endothermic reforming reactions. Simulation results show that it is possible to sustain endothermic reforming reactions with a reasonable reactor size. Modeling results point out a possibility of engine's efficiency improvement by up to 13% in comparison with ICE feeding by gasoline together with achievement of zero-impact pollutant emissions.
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3

Pyatnitsky, Y. I., L. Yu Dolgikh et P. E. Strizhak. « Hydrogen Selectivity in the Steam Reforming of Alcohols ». Theoretical and Experimental Chemistry 57, no 1 (mars 2021) : 71–76. http://dx.doi.org/10.1007/s11237-021-09676-4.

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4

Lan, Ping, Li Hong Lan, Tao Xie et An Ping Liao. « Analysis of Precursors of Carbon Deposition in Hydrogen Preparation by Fast Pyrolysis of Bio-Oil via Catalytic Steam Reforming ». Advanced Materials Research 512-515 (mai 2012) : 338–42. http://dx.doi.org/10.4028/www.scientific.net/amr.512-515.338.

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In the preparation of hydrogen, the bio-oil from pyrolysis of biomass must be further upgraded (catalytic steam reforming)SO as to improve its quality．However the catalyst used in the steam reforming reaction is easy to lose its activity due to being coked' SO that it is important to study the coke formation and its efects on the catalyst activity in the steam reforming process．Fourier Transform Infrared Spectroscopy were used to analyze the precursor of coke on the catalyst Ni/MgO-La2O3-Al2O3 used in steam reforming reaction and the mechanism of coking Was also discussed based on it．The results indicate that precursors of coke deposited inside the pore of the molecular sieve are mainly paraffin, alcohols, aldehydes and ketones, and aromatic compounds.
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Zheng, Dandan, Jingmin Zhou, Zhongpu Fang, Tobias Heil, Aleksandr Savateev, Yongfan Zhang, Markus Antonietti, Guigang Zhang et Xinchen Wang. « H2 and CH4 production from bio-alcohols using condensed poly(heptazine imide) with visible light ». Journal of Materials Chemistry A 9, no 48 (2021) : 27370–79. http://dx.doi.org/10.1039/d1ta08578f.

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Fully condensed poly(heptazine imide) (PHI) supported with highly dispersed Pt nanoparticles (PtNPs) achieves efficient and persistent H2 and CH4 production by photocatalytic reforming of biomass derived alcohols under visible light irradiation.
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Palma, Vincenzo, Concetta Ruocco, Marta Cortese et Marco Martino. « Bioalcohol Reforming : An Overview of the Recent Advances for the Enhancement of Catalyst Stability ». Catalysts 10, no 6 (12 juin 2020) : 665. http://dx.doi.org/10.3390/catal10060665.

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The growing demand for energy production highlights the shortage of traditional resources and the related environmental issues. The adoption of bioalcohols (i.e., alcohols produced from biomass or biological routes) is progressively becoming an interesting approach that is used to restrict the consumption of fossil fuels. Bioethanol, biomethanol, bioglycerol, and other bioalcohols (propanol and butanol) represent attractive feedstocks for catalytic reforming and production of hydrogen, which is considered the fuel of the future. Different processes are already available, including steam reforming, oxidative reforming, dry reforming, and aqueous-phase reforming. Achieving the desired hydrogen selectivity is one of the main challenges, due to the occurrence of side reactions that cause coke formation and catalyst deactivation. The aims of this review are related to the critical identification of the formation of carbon roots and the deactivation of catalysts in bioalcohol reforming reactions. Furthermore, attention is focused on the strategies used to improve the durability and stability of the catalysts, with particular attention paid to the innovative formulations developed over the last 5 years.
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Tsodikov, M. V., A. S. Fedotov, V. V. Zhmakin, K. B. Golubev, V. N. Korchak, V. N. Bychkov, N. Yu Kozitsyna et I. I. Moiseev. « Carbon dioxide reforming of alcohols on porous membrane catalyst systems ». Petroleum Chemistry 51, no 7 (27 novembre 2011) : 568–76. http://dx.doi.org/10.1134/s0965544111070127.

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8

de la Osa, A. R., A. B. Calcerrada, J. L. Valverde, E. A. Baranova et A. de Lucas-Consuegra. « Electrochemical reforming of alcohols on nanostructured platinum-tin catalyst-electrodes ». Applied Catalysis B : Environmental 179 (décembre 2015) : 276–84. http://dx.doi.org/10.1016/j.apcatb.2015.05.026.

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9

Iulianelli, Adolfo, Kamran Ghasemzadeh et Angelo Basile. « Progress in Methanol Steam Reforming Modelling via Membrane Reactors Technology ». Membranes 8, no 3 (17 août 2018) : 65. http://dx.doi.org/10.3390/membranes8030065.

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Hydrogen has attracted growing attention for various uses, and, particularly, for polymer electrolyte membrane fuel cells (PEMFCs) supply. However, PEMFCs need high grade hydrogen, which is difficult in storing and transportation. To solve these issues, hydrogen generation from alcohols and hydrocarbons steam reforming reaction has gained great consideration. Among the various renewable fuels, methanol is an interesting hydrogen source because at room temperature it is liquid, and then, easy to handle and to store. Furthermore, it shows a relatively high H/C ratio and low reforming temperature, ranging from 200 to 300 °C. In the field of hydrogen generation from methanol steam reforming reaction, a consistent literature is noticeable. Despite various reviews that are more devoted to describe from an experimental point of view the state of the art about methanol steam reforming reaction carried in conventional and membrane reactors, this work describes the progress in the last two decades about the modelling studies on the same reaction in membrane reactors.
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10

Le, Van Thuan, Elena-Niculina Dragoi, Fares Almomani et Yasser Vasseghian. « Artificial Neural Networks for Predicting Hydrogen Production in Catalytic Dry Reforming : A Systematic Review ». Energies 14, no 10 (17 mai 2021) : 2894. http://dx.doi.org/10.3390/en14102894.

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Dry reforming of hydrocarbons, alcohols, and biological compounds is one of the most promising and effective avenues to increase hydrogen (H2) production. Catalytic dry reforming is used to facilitate the reforming process. The most popular catalysts for dry reforming are Ni-based catalysts. Due to their inactivation at high temperatures, these catalysts need to use metal supports, which have received special attention from researchers in recent years. Due to the existence of a wide range of metal supports and the need for accurate detection of higher H2 production, in this study, a systematic review and meta-analysis using ANNs were conducted to assess the hydrogen production by various catalysts in the dry reforming process. The Scopus, Embase, and Web of Science databases were investigated to retrieve the related articles from 1 January 2000 until 20 January 2021. Forty-seven articles containing 100 studies were included. To determine optimal models for three target factors (hydrocarbon conversion, hydrogen yield, and stability test time), artificial neural networks (ANNs) combined with differential evolution (DE) were applied. The best models obtained had an average relative error for the testing data of 0.52% for conversion, 3.36% for stability, and 0.03% for yield. These small differences between experimental results and predictions indicate a good generalization capability.
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11

Godina, Lidia I., Alexey V. Kirilin, Anton V. Tokarev et Dmitry Yu Murzin. « Aqueous Phase Reforming of Industrially Relevant Sugar Alcohols with Different Chiralities ». ACS Catalysis 5, no 5 (15 avril 2015) : 2989–3005. http://dx.doi.org/10.1021/cs501894e.

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Sapountzi, F. M., M. N. Tsampas, H. O. A. Fredriksson, J. M. Gracia et J. W. Niemantsverdriet. « Hydrogen from electrochemical reforming of C1–C3 alcohols using proton conducting membranes ». International Journal of Hydrogen Energy 42, no 16 (avril 2017) : 10762–74. http://dx.doi.org/10.1016/j.ijhydene.2017.02.195.

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13

Wang, Yiran, Kai Sun, Shu Zhang, Leilei Xu, Guangzhi Hu et Xun Hu. « Steam reforming of alcohols and carboxylic acids : Importance of carboxyl and alcoholic hydroxyl groups on coke properties ». Journal of the Energy Institute 98 (octobre 2021) : 85–97. http://dx.doi.org/10.1016/j.joei.2021.06.002.

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14

Kulawska, Maria, et Maria Madej-Lachowska. « COPPER/ZINC CATALYSTS IN HYDROGENATION OF CARBON OXIDES ». Chemical and Process Engineering 34, no 4 (1 décembre 2013) : 479–96. http://dx.doi.org/10.2478/cpe-2013-0039.

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Abstract Polish Academy of Sciences, Institute of Chemical Engineering, 44-100 Gliwice, Bałtycka 5, Poland A review concerning main processes of hydrogenation of carbon oxides towards synthesis of methanol, mixture of methanol and higher aliphatic alcohols and one-step synthesis of dimethyl ether as well as methanol steam reforming is given. Low-temperature methanol catalysts and lowtemperature modified methanol catalysts containing copper as primary component and zinc as secondary one are described.
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15

Bellini, Marco, Maria V. Pagliaro, Andrea Marchionni, Jonathan Filippi, Hamish A. Miller, Manuela Bevilacqua, Alessandro Lavacchi et al. « Hydrogen and chemicals from alcohols through electrochemical reforming by Pd-CeO2/C electrocatalyst ». Inorganica Chimica Acta 518 (avril 2021) : 120245. http://dx.doi.org/10.1016/j.ica.2021.120245.

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16

Oh, Jin-Suk, Kyung-Jin Lee, Sun-Hee Kim, Sae-Gin Oh, Tae-Woo Lim, Jong-Su Kim, Sang-Kyun Park, Mann-Eung Kim et Myoung-Hwan Kim. « Thermodynamic Analysis on Steam Reforming of Hydrocarbons and Alcohols for Fuel Cell System ». Journal of the Korean Society of Marine Engineering 35, no 4 (31 mai 2011) : 388–96. http://dx.doi.org/10.5916/jkosme.2011.35.4.388.

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17

Kuz’min, A. E., M. V. Kulikova, A. K. Osipov, A. S. Loktev et A. G. Dedov. « Steam reforming of monoatomic aliphatic alcohols : factors affecting an equilibrium composition of products ». Russian Chemical Bulletin 71, no 9 (septembre 2022) : 1837–46. http://dx.doi.org/10.1007/s11172-022-3600-5.

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18

Sarmiento, Belén, J. Javier Brey, Inmaculada G. Viera, Agustín R. González-Elipe, José Cotrino et Victor J. Rico. « Hydrogen production by reforming of hydrocarbons and alcohols in a dielectric barrier discharge ». Journal of Power Sources 169, no 1 (juin 2007) : 140–43. http://dx.doi.org/10.1016/j.jpowsour.2007.01.059.

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19

Sekine, Yasushi, Kohei Urasaki, Shigeru Kado, Masahiko Matsukata et Eiichi Kikuchi. « Nonequilibrium Pulsed Discharge : A Novel Method for Steam Reforming of Hydrocarbons or Alcohols ». Energy & ; Fuels 18, no 2 (mars 2004) : 455–59. http://dx.doi.org/10.1021/ef034029a.

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20

Kennedy, Julia, Hasliza Bahruji, Michael Bowker, Philip R. Davies, Emir Bouleghlimat et Sudarat Issarapanacheewin. « Hydrogen generation by photocatalytic reforming of potential biofuels : Polyols, cyclic alcohols, and saccharides ». Journal of Photochemistry and Photobiology A : Chemistry 356 (avril 2018) : 451–56. http://dx.doi.org/10.1016/j.jphotochem.2018.01.031.

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21

Godina, Lidia I., Anton V. Tokarev, Irina L. Simakova, Päivi Mäki-Arvela, Ewelina Kortesmäki, Jan Gläsel, Leif Kronberg, Bastian Etzold et Dmitry Yu Murzin. « Aqueous-phase reforming of alcohols with three carbon atoms on carbon-supported Pt ». Catalysis Today 301 (mars 2018) : 78–89. http://dx.doi.org/10.1016/j.cattod.2017.03.042.

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22

Zhang, Liping, Rong Chen, Jianqiang Luo, Jianwei Miao, Jiajian Gao et Bin Liu. « Sustainable hydrogen and chemical production via photo-electrochemical reforming of biomass-derived alcohols ». Nano Research 9, no 11 (25 août 2016) : 3388–93. http://dx.doi.org/10.1007/s12274-016-1216-5.

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23

Shklover, V., C. Bärlocher, R. Nesper et J. Highfield. « In Situ X-Ray Powder Diffraction Study of Catalysts for Steam-Reforming of Alcohols ». Materials Science Forum 166-169 (juillet 1994) : 523–28. http://dx.doi.org/10.4028/www.scientific.net/msf.166-169.523.

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24

Chen, Guan-yi, Wan-qing Li, Hong Chen et Bei-bei Yan. « Progress in the aqueous-phase reforming of different biomass-derived alcohols for hydrogen production ». Journal of Zhejiang University-SCIENCE A 16, no 6 (juin 2015) : 491–506. http://dx.doi.org/10.1631/jzus.a1500023.

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Niţă, Irina, Elis Geacai, Sibel Osman et Olga Iulian. « Study of the influence of alcohols addition to gasoline on the distillation curve, and vapor pressure ». Ovidius University Annals of Chemistry 30, no 2 (1 janvier 2019) : 122–26. http://dx.doi.org/10.2478/auoc-2019-0022.

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Abstract The properties of gasoline change as a result of blending with an alcohol. The aim of this paper is to report new experimental data on distillation curve and Reid vapor pressure of pseudo-binary blends of a catalytic reforming gasoline with ethanol, i-propanol and n-butanol, respectively. Gasoline blend with ethanol was used as reference for discussing properties of isopropanol and respectively, n-butanol blends with gasoline. The main conclusion is that alcohol addition to gasoline affects the relevant characteristics of the blend that influence engine operation. Gasoline+i-propanol blends have intermediate behavior between gasoline+ethanol and gasoline+n-butanol blends.
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Trisunaryanti, Wega, et Ignatius Emmanuel. « PREPARATION, CHARACTERIZATION, ACTIVITY, DEACTIVATION, AND REGENERATION TESTS OF CoO-MoO/ZnO AND CoO-MoO/ZnO-ACTIVATED ZEOLITE CATALYSTS FOR THE HYDROGEN PRODUCTION FROM FUSEL OIL ». Indonesian Journal of Chemistry 9, no 3 (24 juin 2010) : 361–67. http://dx.doi.org/10.22146/ijc.21499.

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Preparation, characterization, activation, deactivation, and regeneration tests of CoO-MoO/ZnO and CoO-MoO/ZnO-Activated Zeolite (AZ) catalysts for the hydrogen production using steam reforming of alcohols in fusel oil have been conducted. Both catalysts were prepared by impregnation of Co and Mo onto ZnO or ZnO-AZ powder then followed by calcination at 400 °C for 5 h under N2 stream. The BET method and pyridine adsorption were used for catalysts characterization. The study of activation, deactivation, and regeneration of catalysts were conducted by using steam reforming method in the semi flow reactor. The reaction condition were: weight ratio of catalysts/feed = 0.1, temperature: 450 °C, duration: 45 min. The gas product was trapped in a 250 mL vacuum pyrex bottle filled with 50 mL of 4 M NaOH solution and analyzed by GC with TCD system to determine H2 existance and HCl titration to determine CO2 produced during the process that was dissolved in NaOH solution. The results showed that CoO-MoO/ZnO-AZ catalyst produced higher gas conversion than CoO-MoO/ZnO catalyst. However, it had short catalyst lifetime due to its high amount of coke deposited during the process. The regeneration test could enhance the catalyst activity. The gas product consisted of H2 (14.70%) and CO2 (24.41%). Keywords: fusel oil, steam reforming, deactivation, regeneration, hydrogen production.
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Asencios, Yvan J. O., Kariny F. M. Elias, Andressa de Zawadzki et Elisabete M. Assaf. « Synthesis-Gas Production from Methane over Ni/CeO2 Catalysts Synthesized by Co-Precipitation Method in Different Solvents ». Methane 1, no 2 (23 mars 2022) : 72–81. http://dx.doi.org/10.3390/methane1020007.

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Ni/CeO2 catalysts were synthesized by the coprecipitation method in a basic medium, using different solvents: water, methanol, ethanol, and isopropanol (Ni content, 10% wt.). These catalysts were tested in the production of syngas through the oxidative reforming of methane (ORM), and partial oxidation of methane (POM). The results of this research demonstrated that the use of alcohols (methanol, ethanol, and isopropanol) during the preparation of the Ni/CeO2 catalysts by the coprecipitation method, improved their characteristics such as crystallite size (nm), surface area (m2·g−1), and reducibility (measured by H2-TPR) that influenced on their catalytic performance in ORM and POM reactions. The best solvent of this study was isopropanol. The use of alcohols (methanol, ethanol, isopropanol) in the co-precipitation method led to the formation of filamentous carbon on the catalyst after the reactions. The catalyst synthesized in the water proved to be inefficient in the POM and ORM reactions and led to the formation of amorphous carbon after the reactions.
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Jiménez, M., C. Yubero et M. D. Calzada. « Study on the reforming of alcohols in a surface wave discharge (SWD) at atmospheric pressure ». Journal of Physics D : Applied Physics 41, no 17 (7 août 2008) : 175201. http://dx.doi.org/10.1088/0022-3727/41/17/175201.

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Du, ChangMing, JianMin Mo et HongXia Li. « Renewable Hydrogen Production by Alcohols Reforming Using Plasma and Plasma-Catalytic Technologies : Challenges and Opportunities ». Chemical Reviews 115, no 3 (12 décembre 2014) : 1503–42. http://dx.doi.org/10.1021/cr5003744.

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Xu, Yunpeng, Zhijian Tian, Guodong Wen, Zhusheng Xu, Wei Qu et Liwu Lin. « Production of COx-free Hydrogen by Alkali Enhanced Hydrothermal Catalytic Reforming of Biomass-derived Alcohols ». Chemistry Letters 35, no 2 (février 2006) : 216–17. http://dx.doi.org/10.1246/cl.2006.216.

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Abdullah, Nornasuha, Nurul Ainirazali et Herma Dina Setiabudi. « Recent development in catalyst and reactor design for CO2 reforming of alcohols to syngas : A review ». Chemical Engineering Research and Design 178 (février 2022) : 438–53. http://dx.doi.org/10.1016/j.cherd.2021.12.023.

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Zhao, Chenyang, Yujia Liu, Hongwei Zhu, Junjie Feng, Huiyun Jiang, Fei An, Yan Jin, Wei Xu, Zhe Yang et Bing Sun. « Hydrophobically modified Pd membrane for the efficient purification of hydrogen in light alcohols steam reforming process ». Journal of Membrane Science 647 (avril 2022) : 120326. http://dx.doi.org/10.1016/j.memsci.2022.120326.

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Collins-Martinez, Virginia, Miguel Escobedo Bretado, Miguel Meléndez Zaragoza, Jesús Salinas Gutiérrez et Alejandro Lopez Ortiz. « Absorption enhanced reforming of light alcohols (methanol and ethanol) for the production of hydrogen : Thermodynamic modeling ». International Journal of Hydrogen Energy 38, no 28 (septembre 2013) : 12539–53. http://dx.doi.org/10.1016/j.ijhydene.2012.11.146.

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Kubacka, A., M. Fernández-García et A. Martínez-Arias. « Catalytic hydrogen production through WGS or steam reforming of alcohols over Cu, Ni and Co catalysts ». Applied Catalysis A : General 518 (mai 2016) : 2–17. http://dx.doi.org/10.1016/j.apcata.2016.01.027.

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Li, Yuhang, Lijun Zhang, Zhanming Zhang, Qianhe Liu, Shu Zhang, Qing Liu, Guangzhi Hu, Yi Wang et Xun Hu. « Steam reforming of the alcohols with varied structures : Impacts of acidic sites of Ni catalysts on coking ». Applied Catalysis A : General 584 (août 2019) : 117162. http://dx.doi.org/10.1016/j.apcata.2019.117162.

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Alvear, Matias, Atte Aho, Irina L. Simakova, Henrik Grénman, Tapio Salmi et Dmitry Yu Murzin. « Aqueous phase reforming of alcohols over a bimetallic Pt-Pd catalyst in the presence of formic acid ». Chemical Engineering Journal 398 (octobre 2020) : 125541. http://dx.doi.org/10.1016/j.cej.2020.125541.

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Wang, Ping, Philipp Weide, Martin Muhler, Roland Marschall et Michael Wark. « New insight into calcium tantalate nanocomposite photocatalysts for overall water splitting and reforming of alcohols and biomass derivatives ». APL Materials 3, no 10 (octobre 2015) : 104412. http://dx.doi.org/10.1063/1.4928288.

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Coronado, Irene, Martina Pitínová, Reetta Karinen, Matti Reinikainen, Riikka L. Puurunen et Juha Lehtonen. « Aqueous-phase reforming of Fischer-Tropsch alcohols over nickel-based catalysts to produce hydrogen : Product distribution and reaction pathways ». Applied Catalysis A : General 567 (octobre 2018) : 112–21. http://dx.doi.org/10.1016/j.apcata.2018.09.013.

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Bagabas, Abdulaziz, Ahmed Sadeq Al-Fatesh, Samsudeen Olajide Kasim, Rasheed Arasheed, Ahmed Aidid Ibrahim, Rawan Ashamari, Khalid Anojaidi, Anis Hamza Fakeeha, Jehad K. Abu-Dahrieh et Ahmed Elhag Abasaeed. « Optimizing MgO Content for Boosting γ-Al2O3-Supported Ni Catalyst in Dry Reforming of Methane ». Catalysts 11, no 10 (13 octobre 2021) : 1233. http://dx.doi.org/10.3390/catal11101233.

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The dry reforming of methane (DRM) process has attracted research interest because of its ability to mitigate the detrimental impacts of greenhouse gases such as methane (CH4) and carbon dioxide (CO2) and produce alcohols and clean fuel. In view of this importance of DRM, we disclosed the efficiency of a new nickel-based catalyst, which was promoted with magnesia (MgO) and supported over gamma-alumina (γ-Al2O3) doped with silica (SiO2), toward DRM. The synthesized catalysts were characterized by H2 temperature-programmed reduction (H2-TPR), X-ray diffraction (XRD), X-ray Photoelectron Spectroscopy (XPS), Thermogravimetric analysis (TGA), and Transmission electron microscopy (TEM) techniques. The effect of MgO weight percent loading (0.0, 1.0, 2.0, and 3.0 wt. %) was examined because the catalytic performance was found to be a function of this parameter. An optimum loading of 2.0 wt. % of MgO was obtained, where the conversion of CH4 and CO2 at 800 °C were 86% and 91%, respectively, while the syngas (H2/CO) ratios relied on temperature and were in the range of 0.85 to 0.95. The TGA measurement of the best catalyst, which was operated over a 15-h reaction time, displayed negligible weight loss (<9.0 wt. %) due to carbon deposition, indicating the good resistance of our catalyst system to the deposition of carbon owing to the dopant and the modifier. TEM images showed the presence of multiwalled carbon nanotubes, confirming the TGA.
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Trevisanut, Cristian, Olena Vozniuk, Massimiliano Mari, Sigrid Yurena Arenas Urrea, Chantal Lorentz, Jean-Marc M. Millet et Fabrizio Cavani. « The Chemical-Loop Reforming of Alcohols on Spinel-Type Mixed Oxides : Comparing Ni, Co, and Fe Ferrite vs Magnetite Performances ». Topics in Catalysis 59, no 17-18 (29 juillet 2016) : 1600–1613. http://dx.doi.org/10.1007/s11244-016-0681-0.

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Languer, Mariana P., Francine R. Scheffer, Adriano F. Feil, Daniel L. Baptista, Pedro Migowski, Guilherme J. Machado, Diogo P. de Moraes, Jairton Dupont, Sérgio R. Teixeira et Daniel E. Weibel. « Photo-induced reforming of alcohols with improved hydrogen apparent quantum yield on TiO2 nanotubes loaded with ultra-small Pt nanoparticles ». International Journal of Hydrogen Energy 38, no 34 (novembre 2013) : 14440–50. http://dx.doi.org/10.1016/j.ijhydene.2013.09.018.

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42

Korenev, V. V., V. P. Tomin, O. V. Zhdaneev et V. M. Kapustin. « Phase Equilibriums of Ammonium Chloride Systems as Model Hydrogenolysis Products of Organochlorine Compounds under Naphtha Hydrotreating Conditions ». Petroleum Chemistry 62, no 4 (avril 2022) : 376–82. http://dx.doi.org/10.1134/s0965544122020177.

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Abstract The study focuses on corrosion challenges for naphtha hydrotreating equipment (installed upstream of a reforming unit) caused by ammonium chloride deposits and on the development of adequate chemical engineering protection measures. Using an experimental setup, we investigated the sublimation/desublimation of ammonium chloride at varying pressures and temperatures in a medium typical of naphtha and hydrogen-bearing gas streams flowing from a naphtha hydrotreater. Superstoichiometric concentrations of hydrogen chloride were found to significantly decrease the desublimation temperature (by 30–50°C) compared to a system that has a stoichiometric HCl concentration. Consequently, solid-phase ammonium chloride exists in a wider range of temperatures and pressures. Introducing surfactants (especially higher alcohols) into the system reduces adhesion and affects the crystalline structure of salt deposits—despite the solid phase being stabilized by an excess (superstoichiometric) concentration of hydrogen chloride—which makes surfactants suitable for mitigating the salt deposition challenge. Based on the data obtained, we proposed effective chemical engineering protection methods that use water-soluble corrosion inhibitors in combination with an online automated system for organochlorine control.
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43

Simonov, Mikhail, Yulia Bespalko, Ekaterina Smal, Konstantin Valeev, Valeria Fedorova, Tamara Krieger et Vladislav Sadykov. « Nickel-Containing Ceria-Zirconia Doped with Ti and Nb. Effect of Support Composition and Preparation Method on Catalytic Activity in Methane Dry Reforming ». Nanomaterials 10, no 7 (30 juin 2020) : 1281. http://dx.doi.org/10.3390/nano10071281.

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Nickel-containing mixed ceria-zirconia oxides also doped by Nb and Ti have been prepared by a citrate route and by original solvothermal continuous flow synthesis in supercritical alcohols. Nickel was subsequently deposited by conventional insipient wetness impregnation. The oxides are comprised of ceria-zirconia solid solution with cubic fluorite phase. Negligible amounts of impurities of zirconia are observed for samples prepared by citrate route and doped by Ti. Supports prepared by supercritical synthesis are single-phased. XRD data, Raman, and UV-Vis DR (diffuse reflectance) spectroscopy suggest increasing lattice parameter and amount of oxygen vacancies in fluorite structure after Nb and Ti incorporation despite of the preparation method. These structural changes correlate with the catalytic activity in a methane dry reforming reaction. Catalysts synthesized under supercritical conditions are more active than the catalysts of the same composition prepared by the citrate route. The catalytic activity of samples doped with Ti and Nb is two times higher in terms of TOF (turnover frequency) and increased stability of these catalysts is attributed with the highest oxygen mobility being crucial for gasification of coke precursors.
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Coronado, Irene, Aitor Arandia, Matti Reinikainen, Reetta Karinen, Riikka L. Puurunen et Juha Lehtonen. « Kinetic Modelling of the Aqueous-Phase Reforming of Fischer-Tropsch Water over Ceria-Zirconia Supported Nickel-Copper Catalyst ». Catalysts 9, no 11 (8 novembre 2019) : 936. http://dx.doi.org/10.3390/catal9110936.

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In the Fischer–Tropsch (FT) synthesis, a mixture of CO and H2 is converted into hydrocarbons and water with diluted organics. This water fraction with oxygenated hydrocarbons can be processed through aqueous-phase reforming (APR) to produce H2. Therefore, the APR of FT water may decrease the environmental impact of organic waters and improve the efficiency of the FT process. This work aimed at developing a kinetic model for the APR of FT water. APR experiments were conducted with real FT water in a continuous packed-bed reactor at different operating conditions of temperature (210–240 °C), pressure (3.2–4.5 MPa) and weight hourly space velocity (WHSV) (40–200 h−1) over a nickel-copper catalyst supported on ceria-zirconia. The kinetic model considered C1-C4 alcohols as reactants, H2, CO, CO2 and CH4 as the gaseous products, and acetic acid as the only liquid product. The kinetic model included seven reactions, the reaction rates of which were expressed with power law equations. The kinetic parameters were estimated with variances and confidence intervals that explain the accuracy of the model to estimate the outlet liquid composition resulting from the APR of FT water. The kinetic model developed in this work may facilitate the development of APR to be integrated in a FT synthesis process.
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Makrushin, Nikolay A., Vladimir L. Gartman, Aleksandr Ya Weynbender, Alexey V. Dulnev et Oleg V. Zamuruev. « INFLUENCE OF SURFACE-ACTIVE SUBSTANCES ON IMPREGNATION PROCESS IN PRODUCTION OF METHANE CONVERSION CATALYSTS ». IZVESTIYA VYSSHIKH UCHEBNYKH ZAVEDENII KHIMIYA KHIMICHESKAYA TEKHNOLOGIYA 63, no 8 (23 juin 2020) : 66–72. http://dx.doi.org/10.6060/ivkkt.20206308.6075.

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The effect of various surfactants on the corundum carrier impregnation process using solutions of nickel and aluminum nitrates in steam condensate used in the production of supported methane steam reforming catalysts is compared. It has been shown that the use of surfactants to eliminate the “hang” of the impregnating solution in the carrier layer (catalyst or intermediate with multiple impregnation) in the holes of the granules, as well as in the contact points of the granules between themselves and the walls of the apparatus is an effective method of improving the quality of the resulting catalyst. Using for this purpose, synthanols (ethoxylated alcohols, which are non-ionic surfactants), compared with diethylamine, polyvinyl alcohol and ethylene glycol, can significantly (by 3 orders of magnitude) reduce their required content in solution, which is confirmed by many years of production experience. The high efficiency of synthanol in reducing the surface tension of the solution at its minimum concentrations was confirmed. The results of spectral studies and quantum-chemical calculations of the syntanols molecules interaction with nickel ions are presented. The presence of intermolecular interaction in the solution between the surfactant molecules and nickel ions, leading to the binding of some of the ions in the solution, is shown. The use of synthanol can significantly reduce the chance of the catalyst surface carbonization that decreases its activity. Also the probability of possible some metal ions entrainment with the impregnating solution decreases. The use of synthanol, taking into account its widespread use in sanitary goods and hygiene products, also allows reducing toxicity and explosion hazard at workplaces inside the methane conversion catalysts production area.
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Smirnova, M. Yu, S. N. Pavlova, T. A. Krieger, Yu N. Bespalko, V. I. Anikeev, Yu A. Chesalov, V. V. Kaichev, N. V. Mezentseva et V. A. Sadykov. « The Synthesis of Ce1 – xZr x O2 Oxides in Supercritical Alcohols and Catalysts for Carbon Dioxide Reforming of Methane on Their Basis ». Russian Journal of Physical Chemistry B 11, no 8 (décembre 2017) : 1312–21. http://dx.doi.org/10.1134/s1990793117080103.

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Le Valant, Anthony, Anthony Garron, Nicolas Bion, Daniel Duprez et Florence Epron. « Effect of higher alcohols on the performances of a 1%Rh/MgAl2O4/Al2O3 catalyst for hydrogen production by crude bioethanol steam reforming ». International Journal of Hydrogen Energy 36, no 1 (janvier 2011) : 311–18. http://dx.doi.org/10.1016/j.ijhydene.2010.09.039.

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Jawhari, Ahmed Hussain, Nazim Hasan, Ibrahim Ali Radini, Katabathini Narasimharao et Maqsood Ahmad Malik. « Noble Metals Deposited LaMnO3 Nanocomposites for Photocatalytic H2 Production ». Nanomaterials 12, no 17 (29 août 2022) : 2985. http://dx.doi.org/10.3390/nano12172985.

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Due to the growing demand for hydrogen, the photocatalytic hydrogen production from alcohols present an intriguing prospect as a potential source of low-cost renewable energy. The noble metals (Ag, Au, Pd and Pt) deposited LaMnO3 nanocomposites were synthesized by a non-conventional green bio-reduction method using aqueous lemon peel extract, which acts as both reducing and capping agent. The successful deposition of the noble metals on the surface of LaMnO3 was verified by using powder XRD, FTIR, TEM, N2-physisorption, DR UV-vis spectroscopy, and XPS techniques. The photocatalytic activity of the synthesized nanocomposites was tested for photocatalytic H2 production under visible light irradiation. Different photocatalytic reaction parameters such as reaction time, pH, catalyst mass and reaction temperature were investigated to optimize the reaction conditions for synthesized nanocomposites. Among the synthesized noble metal deposited LaMnO3 nanocomposites, the Pt-LaMnO3 nanocomposite offered superior activity for H2 production. The enhanced photocatalytic activity of the Pt-LaMnO3 was found as a result from low bandgap energy, high photoelectrons generation and enhanced charge separation due to deposition of Pt nanoparticles. The effective noble metal deposition delivers a new route for the development of plasmonic noble metal-LaMnO3 nanocomposites for photocatalytic reforming of aqueous methanol to hydrogen.
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Wu, Yanhua, Fangna Gu, Guangwen Xu, Ziyi Zhong et Fabing Su. « Hydrogenolysis of cellulose to C4–C7 alcohols over bi-functional CuO–MO/Al2O3 (M=Ce, Mg, Mn, Ni, Zn) catalysts coupled with methanol reforming reaction ». Bioresource Technology 137 (juin 2013) : 311–17. http://dx.doi.org/10.1016/j.biortech.2013.03.105.

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Davidson, Stephen D., He Zhang, Junming Sun et Yong Wang. « Supported metal catalysts for alcohol/sugar alcohol steam reforming ». Dalton Transactions 43, no 31 (31 mars 2014) : 11782. http://dx.doi.org/10.1039/c4dt00521j.

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