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Готові списки джерел за темами / Organosilicon Based Mesoporous Molecular Sieves

Добірка наукової літератури з теми "Organosilicon Based Mesoporous Molecular Sieves"

Автор: Grafiati

Опубліковано: 7 вересня 2023

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Статті в журналах з теми "Organosilicon Based Mesoporous Molecular Sieves"

1

Luan, Zhaohua, Dongyuan Zhao, Heyong He, Jacek Klinowski, and Larry Kevan. "Characterization of Aluminophosphate-Based Tubular Mesoporous Molecular Sieves." Journal of Physical Chemistry B 102, no. 7 (February 1998): 1250–59. http://dx.doi.org/10.1021/jp973109a.

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2

Shi, Chunwei, Jingjing Liu, Wenyuan Wu, Xue Bian, Ping Chen, Zhanxu Yang, and Chuantao Lu. "Toward Understanding of the Effect of Nucleation Temperature on Porous Structure of Micro-Mesoporous Composite Molecular Sieves and Related Crystallization Mechanism." Catalysts 9, no. 9 (September 17, 2019): 777. http://dx.doi.org/10.3390/catal9090777.

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Although micro-mesoporous composite molecular sieves have received significant attention due to their desirable properties, they still lack systematic studies on their crystallization process to achieve controllable synthesis of composite molecular sieves. In this study, a series of Y/SBA-15 micro-mesoporous composite molecular sieves with different porous structures were synthesized by tuning nucleation temperature, based on epitaxial growth on the outer surface of the Y-type crystal particle. All composite molecular sieves were characterized by X-ray diffraction (XRD), scanning electron microscope (SEM), and transmission electron microscope (TEM). Moreover, the effect of nucleation temperature on the structure of composite molecular sieves was investigated, while the crystallization mechanism was also explored. Furthermore, the performance of the molecular sieves on isomerization of n-pentane was investigated, the results suggested that the isomerization selectivity was positively correlated with regularity degree of the mesoporous porous structure, where the highest isomerization reached 95.81%. This work suggests that nucleation temperature plays a key role in structures of micro-mesoporous composite molecular sieves, providing a solid basis for the further development of functional composite molecular sieves.

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3

Zhao, X. S., and G. Q. (Max) Lu. "Aluminophosphate-based mesoporous molecular sieves: synthesis and characterization of TAPOs." Microporous and Mesoporous Materials 44-45 (April 2001): 185–94. http://dx.doi.org/10.1016/s1387-1811(01)00183-4.

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4

Pertiwi, Yuvita Eka, and Maria Ulfa. "High Performance of Phenol Adsorption using Iron Based SBA-15 Synthesized by Loading-Microwave Method." Oriental Journal of Chemistry 35, no. 3 (June 20, 2019): 1022–28. http://dx.doi.org/10.13005/ojc/350314.

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The iron based mesoporous silica (Fe2O3/SBA-15) was studied for the first time for adsorption of phenol as a model adsorbate compound. The structural and textural properties of the synthesized samples were characterized by means of X-Ray Diffraction, Transmission Electron Microscopy, FTIR and element analysis techniques by Energy Dispersive X-Ray (EDX). The result of XRD analysis showed that mesoporous SBA-15 silica molecular sieves which modified with Fe2O3has a hexagonal structure with a pore size is 4.90 nm and iron contents (25.27%) were found on the surface of the Fe2O3/mesoporous silica SBA-15. While the FTIR analysis showed that Fe2O3/SBA-15 had functional group of assymetric Si-O-Si and Fe-O-Si which was found at 1085 cm-1 and 678 cm-1, respectively. Adsorption performance of Fe2O3/SBA-15 material investigated by phenol compounds as adsorbate model. The optimum contact time is 60 minutes and the Kinetics model of the mesoporous SBA-15 silica molecular sieves modified Fe2O3 can adsorb phenol compounds following the Kinetics Model Ho and McKay. The result optimum adsorption capacity occuring in the adsorption of phenol compounds by of the mesoporous SBA-15 silica molecular sieves modified Fe2O3 is 114.000 mg/g.

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5

Pattnaik, Satyanarayan, and Kamla Pathak. "Mesoporous Silica Molecular Sieve based Nanocarriers: Transpiring Drug Dissolution Research." Current Pharmaceutical Design 23, no. 3 (February 20, 2017): 467–80. http://dx.doi.org/10.2174/1381612822666161026162005.

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Background: Improvement of oral bioavailability through enhancement of dissolution for poorly soluble drugs has been a very promising approach. Recently, mesoporous silica based molecular sieves have demonstrated excellent properties to enhance the dissolution velocity of poorly water-soluble drugs. Description: Current research in this area is focused on investigating the factors influencing the drug release from these carriers, the kinetics of drug release and manufacturing approaches to scale-up production for commercial manufacture. Conclusion: This comprehensive review provides an overview of different methods adopted for synthesis of mesoporous materials, influence of processing factors on properties of these materials and drug loading methods. The drug release kinetics from mesoporous silica systems, the manufacturability and stability of these formulations are reviewed. Finally, the safety and biocompatibility issues related to these silica based materials are discussed.

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6

Liu, Fengbao, Jinsheng Sun, and Xiao Luo. "Preparation of MOF-Based Core-Shell Gel Particles with Catalytic Activity and Their Plugging Performance." Gels 9, no. 1 (January 4, 2023): 44. http://dx.doi.org/10.3390/gels9010044.

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Drilling fluid systems for deep and ultra-deep wells are hampered by both high-temperature downhole environments and lengthy cycle periods. Suppose that the gel particle-plugging agent, the primary treatment agent in the system, fails to offer durable and stable plugging performance. In such a scenario, the borehole wall is susceptible to instability and landslide after prolonged immersion, leading to downhole accidents. In this study, novel core-shell gel particles (modified ZIF) with ZIF particles employed as the core material and organosilicon-modified polyethylene polyamine (PEPA) as the polymer shell were fabricated using PEPA, in-house synthesized (3-aminopropyl) triethoxysilane (APTS), and the ZIF-8 metal-organic framework (MOF) as the raw materials to enhance the long-term plugging performance of gel plugging agents. The modified ZIF particles are nanoscale polygonal crystals and differ from conventional core-shell gel particles in that they feature high molecular sieve catalytic activity due to the presence of numerous interior micropores and mesopores. As a result, modified ZIF exhibits the performance characteristics of both rigid and flexible plugging agents and has an excellent catalytic cross-linking effect on the sulfonated phenolic resin (SMP-3) and sulfonated lignite resin (SPNH) in drilling fluids. Consequently, a cross-linking reaction occurs when SMP-3 and SPNH flow through the spacings in the plugging layer formed by the modified ZIF particles. This increases the viscosity of the liquid phase and simultaneously generates an insoluble gel, forming a particle-gel composite plugging structure with the modified ZIF and significantly enhancing the long-term plugging performance of the drilling fluid.

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7

Kuroda, Kazuyuki. "Silica-based mesoporous molecular sieves derived from a layered polysilicate kanemite?A review." Journal of Porous Materials 3, no. 2 (June 1996): 107–14. http://dx.doi.org/10.1007/bf01186040.

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8

Wu, Beina, Yaping Guo, Hongmei Cao, Yang Zhang, Lili Yu, and Nengqin Jia. "A novel mesoporous molecular sieves-based electrochemilumenescence sensor for sensitive detection of azithromycin." Sensors and Actuators B: Chemical 186 (September 2013): 219–25. http://dx.doi.org/10.1016/j.snb.2013.05.080.

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9

Makshina, E. V., S. V. Sirotin, V. V. Yushchenko, G. N. Mazo, M. W. E. van den Berg, K. V. Klements’ev, W. Grünert, and B. V. Romanovskii. "Nanocomposites based on LaCoO3 and mesoporous molecular sieves: Preparation and physicochemical and catalytic properties." Kinetics and Catalysis 47, no. 1 (January 2006): 49–53. http://dx.doi.org/10.1134/s0023158406010083.

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10

Zhang, Han, and Haiyan Song. "Study of Adsorptive Denitrogenation of Diesel Fuel over Mesoporous Molecular Sieves Based on Breakthrough Curves." Industrial & Engineering Chemistry Research 51, no. 49 (December 3, 2012): 16059–65. http://dx.doi.org/10.1021/ie302169r.

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Більше джерел

Частини книг з теми "Organosilicon Based Mesoporous Molecular Sieves"

1

Balcar, Hynek, and Jiří Čejka. "Mesoporous Molecular Sieves Based Catalysts for Olefin Metathesis and Metathesis Polymerization." In Green Metathesis Chemistry, 101–14. Dordrecht: Springer Netherlands, 2010. http://dx.doi.org/10.1007/978-90-481-3433-5_9.

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2

Martínez, Agustín, Gonzalo Prieto, Andrés García-Trenco, and Ernest Peris. "Advanced Catalysts Based on Micro- and Mesoporous Molecular Sieves for the Conversion of Natural Gas to Fuels and Chemicals." In Zeolites and Catalysis, 649–85. Weinheim, Germany: Wiley-VCH Verlag GmbH & Co. KGaA, 2010. http://dx.doi.org/10.1002/9783527630295.ch21.

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3

Yuan, Z. Y., W. Zhou, L. M. Peng, J. Z. Wang, and H. X. Li. "06-P-09 - Controlled synthesis of microporous and mesoporous silica-based molecular sieves in the presence of dodecyldimethylbenzylammonium chloride." In Studies in Surface Science and Catalysis, 199. Elsevier, 2001. http://dx.doi.org/10.1016/s0167-2991(01)81386-0.

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4

Xin, J., X. Chen, J. Suo, Xia Zhang, L. Yan, and Shuben Li. "24-P-12-Nb- and Ti-containing silica-based mesoporous molecular sieves as catalysts for photocatalytic oxidation of methane." In Studies in Surface Science and Catalysis, 273. Elsevier, 2001. http://dx.doi.org/10.1016/s0167-2991(01)81594-9.

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