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Synthesis, characterization, and cat...

Michigan State University.

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Synthesis, characterization, and catalytic application of strongly acidic mesoporous aluminosilicate materials.

Record Type:	Electronic resources : Monograph/item
Title/Author:	Synthesis, characterization, and catalytic application of strongly acidic mesoporous aluminosilicate materials./
Author:	Wang, Hui.
Description:	158 p.
Notes:	Adviser: Thomas J. Pinnavaia.
Contained By:	Dissertation Abstracts International69-01B.
Subject:	Chemistry, Inorganic. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3298127
ISBN:	9780549422044

Synthesis, characterization, and catalytic application of strongly acidic mesoporous aluminosilicate materials.
Wang, Hui.

Synthesis, characterization, and catalytic application of strongly acidic mesoporous aluminosilicate materials. - 158 p.

Adviser: Thomas J. Pinnavaia.

Thesis (Ph.D.)--Michigan State University, 2007.

Aluminosilicate materials are utilized in many industrial applications, including adsorbents, ion-exchange agents, catalysts, and catalyst supports.1 In catalytic applications, those aluminosilicates with large surface area and well-defined pore structure are especially useful because such materials can provide excellent catalytic performance and shape-selectivity that are not available from conventional catalysts.

ISBN: 9780549422044Subjects--Topical Terms:

517253
Chemistry, Inorganic.

Synthesis, characterization, and catalytic application of strongly acidic mesoporous aluminosilicate materials.
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020 $a 9780549422044
035 $a (UMI)AAI3298127
035 $a AAI3298127
040 $a UMI $c UMI
100 1 $a Wang, Hui. $3 836732
245 1 0 $a Synthesis, characterization, and catalytic application of strongly acidic mesoporous aluminosilicate materials.
300 $a 158 p.
500 $a Adviser: Thomas J. Pinnavaia.
500 $a Source: Dissertation Abstracts International, Volume: 69-01, Section: B, page: 0614.
502 $a Thesis (Ph.D.)--Michigan State University, 2007.
520 $a Aluminosilicate materials are utilized in many industrial applications, including adsorbents, ion-exchange agents, catalysts, and catalyst supports.1 In catalytic applications, those aluminosilicates with large surface area and well-defined pore structure are especially useful because such materials can provide excellent catalytic performance and shape-selectivity that are not available from conventional catalysts.
520 $a Mesostructured aluminosilicates templated from supramolecular assembly of surfactant molecules have the above two desired properties.2 However, the weak acidity and low hydrothermal stability cast a shadow over their prospect as acidic catalysts. On the other hand, small pore sizes greatly limited the application of zeolites, crystalline and strongly acidic aluminosilicates.
520 $a The present work describes the synthesis of mesoporous aluminosilicates with strong acidity. First, a family of mesostructured aluminosilicates was prepared from the zeolite precursor hydrolyzed in the presence of surfactants, which interact and stabilize the zeolitic subunits. The resultant mesostructures, MSU-Z, showed an unprecedented 74% conversion in catalytic cumene cracking reaction compared to 11% conversion for the conventional MCM-41 material. 3 Secondary, zeolite nano-crystals as small as 30 nm with high crystallinity and yield were prepared in the presence of organosilanes, which served as a surface modifier to control the crystal size. The resultant nano-sized zeolites showed uniform particle size, and constructed uniform intercrystal mesopores. Finally, organosilane modifier polymers were used as mesoporogen in the synthesis of zeolites.4 Zeolite products with small and uniform intracrystal mesopores tunable in the range of 2 to 10 nm can be prepared. Compared to conventional zeolites, 6-fold and 16-fold increase in external surface and mesoporosity can be achieved. Such materials exhibited superior catalytic performance in cumene cracking reaction.
520 $a References. 1 Corma, A. Chem. Rev. 1997, 97(6), 2373. 2 Beck, J. S.; Vartuli, J. C.; Roth, W. J.; Leonowicz, M. E.; Kresge, C. T.; Schmitt, K. D.; Chu, C. T. W.; Olson, D. H.; Sheppard, E. W.; et al. J. Am. Chem. Soc. 1992, 114(27), 10834. 3 Wang, H.; Liu, Y.; Pinnavaia, T. J. J. Phys. Chem. B 2006, 110(10), 4524. 4 Wang, H.; Pinnavaia, T. J. Angew. Chem. Int. Ed. 2006, 45, 7603.
590 $a School code: 0128.
650 4 $a Chemistry, Inorganic. $3 517253
650 4 $a Engineering, Materials Science. $3 1017759
690 $a 0488
690 $a 0794
710 2 $a Michigan State University. $3 676168
773 0 $t Dissertation Abstracts International $g 69-01B.
790 $a 0128
790 1 0 $a Pinnavaia, Thomas J., $e advisor
791 $a Ph.D.
792 $a 2007
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3298127