Hierarchically structured meso-macroporous aluminosilicates with high tetrahedral aluminium content in acid catalysed esterification of fatty acids

	Hierarchically structured meso-macroporous aluminosilicates with high tetrahedral aluminium content in acid catalysed esterification of fatty acids
	Lemaire, Arnaud 1; Wang, Quan-Yi 1,2,4; Wei, Yingxu 2; Liu, Zhongmin 2; Su, Bao-Lian 1,3
刊名	journal of colloid and interface science
	2011-11-15
卷号	363 期号:2 页码:511-520
关键词	Aluminosilicate Hierarchical multiporous Porous self-generation phenomenon Low Si/Al ratios Ionic exchange Esterification reaction Catalytic test
ISSN号	待补充
通讯作者	刘中民 ; subao-lian
产权排序	2,2
中文摘要	hierarchically structured meso-macroporous aluminosilicates with high tetrahedral aluminium content in acid catalysed esterification of fatty acids
英文摘要	a simple synthesis pathway has been developed for the design of hierarchically structured spongy or spherical voids assembled meso-macroporous aluminosilicates with high tetrahedral aluminium content on the basis of the aqueous polymerisation of new stabilized alkoxy-bridged single molecular precursors. the intimate mixing of an aluminosilicate ester (sec-buo)(2)-al-o-si(oet)(3) and a silica co-reactant (tetramethoxysilane, tmos) with variable ratios and the use of alkaline solutions (ph 13.0 and 13.5) improve significantly the heterocondensation rates between the highly reactive aluminium alkoxide part of the single precursor and added silica co-reactant, leading to aluminosilicate materials with high intra-framework aluminium content and low si/al ratios. the spherically-shaped meso-macroporosity was spontaneously generated by the release of high amount of liquid by-products (water/alcohol molecules) produced during the rapid hydrolysis and condensation processes of this double alkoxide and the tmos co-reactant. it has been observed that both ph value and al-si/tmos molar ratio can strongly affect the macroporous structure formation. increasing ph value, even slightly from 13 to 13.5, can significantly favour the incorporation of al atoms in tetrahedral position of the framework. after the total ionic exchange of na(+) compensating cations, catalytic tests of obtained materials were realised in the esterification reaction of high free fatty acid (ffa) oils, showing their higher catalytic activity compared to commercial bentonite clay, and their potential applications as catalyst supports in acid catalysed reactions. (c) 2011 elsevier inc. all rights reserved.
学科主题	物理化学
WOS标题词	science & technology ; physical sciences
类目[WOS]	chemistry, physical
研究领域[WOS]	chemistry
关键词[WOS]	surfactant-assisted synthesis ; one-pot synthesis ; mesoporous aluminosilicates ; pore structure ; self-formation ; si/al ratio ; zeolite ; silica ; macrochannels ; complexes
收录类别	SCI
语种	英语
WOS记录号	WOS:000295192900012
公开日期	2012-07-09
内容类型	期刊论文
源URL	[http://159.226.238.44/handle/321008/115838]
专题	大连化学物理研究所_中国科学院大连化学物理研究所
作者单位	1.Univ Namur FUNDP, Lab Inorgan Mat Chem CMI, B-5000 Namur, Belgium 2.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian 116023, Peoples R China 3.Wuhan Univ Technol, State Key Lab Adv Technol Mat Synth & Proc, Wuhan 430070, Hubei, Peoples R China 4.Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Lemaire, Arnaud,Wang, Quan-Yi,Wei, Yingxu,et al. Hierarchically structured meso-macroporous aluminosilicates with high tetrahedral aluminium content in acid catalysed esterification of fatty acids[J]. journal of colloid and interface science,2011,363(2):511-520.
APA	Lemaire, Arnaud,Wang, Quan-Yi,Wei, Yingxu,Liu, Zhongmin,&Su, Bao-Lian.(2011).Hierarchically structured meso-macroporous aluminosilicates with high tetrahedral aluminium content in acid catalysed esterification of fatty acids.journal of colloid and interface science,363(2),511-520.
MLA	Lemaire, Arnaud,et al."Hierarchically structured meso-macroporous aluminosilicates with high tetrahedral aluminium content in acid catalysed esterification of fatty acids".journal of colloid and interface science 363.2(2011):511-520.