Facile synthesis for ordered mesoporous gamma-aluminas with high thermal   stability

doi:10.1021/ja0764308

CORC > 北京大学 > 化学与分子工程学院

	Facile synthesis for ordered mesoporous gamma-aluminas with high thermal stability
	Yuan, Quan ; Yin, An-Xiang ; Luo, Chen ; Sun, Ling-Dong ; Zhang, Ya-Wen ; Duan, Wen-Tao ; Liu, Hai-Chao ; Yan, Chun-Hua
刊名	journal of the american chemical society
	2008
关键词	HIGH-SURFACE-AREA MOLECULAR-SIEVES OXIDE GAMMA-AL2O3 MECHANISM ACID ORGANIZATION ASSEMBLIES ADSORPTION COMPLEXES
DOI	10.1021/ja0764308
英文摘要	The facile synthesis of highly ordered mesoporous aluminas with high thermal stability and tunable pore sizes is systematically investigated. The general synthesis strategy is based on a sol-gel process associated with nonionic block copolymer as templates in ethanol solvent. Small-angle XRD, TEM, and nitrogen adsorption and desorption results show that these mesoporous aluminas possess a highly ordered 2D hexagonal mesostructure, which is resistant to high temperature up to 1000 degrees C. Ordered mesoporous structures with tunable pore sizes are obtained with various precursors, different acids as pH adjustors, and different block copolymers as templates. These mesoporous aluminas have large surface areas (ca. 400 m(2)/g), pore volumes (ca. 0.70 cm(3)/g), and narrow pore-size distributions. The influence of the complexation ability of anions and hydro-carboxylic acid, acid volatility, and other important synthesis conditions are discussed in detail. Utilizing this simple strategy, we also obtained partly ordered mesoporous alumina with hydrous aluminum nitrate as the precursor. FTIR pyridine adsorption measurements indicate that a large amount of Lewis acid sites exist in these mesoporous aluminas. These materials are expected to be good candidates in catalysis due to the uniform pore structures, large surface areas, tunable pore sizes, and large amounts of surface Lewis acid sites. Loaded with ruthenium, the representative mesoporous alumina exhibits reactant size selectivity in hydrogenation of acetone, D-glucose, and D-(+)-cellobiose as a test reaction, indicating the potential applications in shape-selective catalysis.; http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000253951900057&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=8e1609b174ce4e31116a60747a720701 ; Chemistry, Multidisciplinary; SCI(E); EI; PubMed; 308; ARTICLE; 11; 3465-3472; 130
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/199235]
专题	化学与分子工程学院
推荐引用方式 GB/T 7714	Yuan, Quan,Yin, An-Xiang,Luo, Chen,et al. Facile synthesis for ordered mesoporous gamma-aluminas with high thermal stability[J]. journal of the american chemical society,2008.
APA	Yuan, Quan.,Yin, An-Xiang.,Luo, Chen.,Sun, Ling-Dong.,Zhang, Ya-Wen.,...&Yan, Chun-Hua.(2008).Facile synthesis for ordered mesoporous gamma-aluminas with high thermal stability.journal of the american chemical society.
MLA	Yuan, Quan,et al."Facile synthesis for ordered mesoporous gamma-aluminas with high thermal stability".journal of the american chemical society (2008).