Dual template-directed synthesis of SAPO-34 nanosheet assemblies with improved stability in the methanol to olefins reaction

	Dual template-directed synthesis of SAPO-34 nanosheet assemblies with improved stability in the methanol to olefins reaction
	Wang, Chan 1,2,3; Yang, Miao 1,2; Tian, Peng 1,2; Xu, Shutao 1,2; Yang, Yue 1,2; Wang, Dehua 1,2,3; Yuan, Yangyang 1,2,3; Liu, Zhongmin 1,2
刊名	journal of materials chemistry a
	2015-03-14
卷号	3 期号:10 页码:5608-5616
英文摘要	a spherical self-assembly of sapo-34 nanosheets was hydrothermally synthesized by using a quaternary ammonium-type organosilane surfactant [3-(trimethoxysilyl) propyl]octadecyldimethylammonium chloride (tpoac) as the mesoporogen and a part of the silica source, and diethylamine (dea) as the microporous template. the prepared materials were well characterized by xrd, xrf, sem, tem, n-2 adsorption-desorption, nh3-tpd, nh3-adsorbed ir and pyridine-adsorbed ir measurements. it revealed that the morphologies, compositions and acidity of the sapo-34 products changed significantly with the increased tpoac/teos ratio, showing that the tpoac/teos ratio had a significant impact on the crystallization process of sapo-34. solid state c-13, si-29 nmr and tg-dta analyses were further conducted to investigate the status of tpoac in the final products. a possible crystallization process involving tpoac was proposed. the catalytic performances of the synthesized sapo-34s were evaluated using the mto reaction. the optimal sapo-34 nanosheet assemblies with a hierarchical porous structure displayed a remarkably enhanced catalytic lifetime and high yields of light olefins.
WOS标题词	science & technology ; physical sciences ; technology
类目[WOS]	chemistry, physical ; energy & fuels ; materials science, multidisciplinary
研究领域[WOS]	chemistry ; energy & fuels ; materials science
关键词[WOS]	molecular-sieves ; catalytic performance ; mto-reaction ; pt/sapo-11 catalysts ; crystalline zeolite ; conversion ; selectivity ; hydroisomerization ; aluminophosphates ; architectures
收录类别	SCI
语种	英语
WOS记录号	WOS:000350682100047
公开日期	2016-05-09
内容类型	期刊论文
源URL	[http://cas-ir.dicp.ac.cn/handle/321008/146056]
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.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian Natl Lab Clean Energy, Dalian, Peoples R China 2.Chinese Acad Sci, Dalian Inst Chem Phys, Natl Engn Lab Methanol Olefins, Dalian, Peoples R China 3.Univ Chinese Acad Sci, Beijing, Peoples R China
推荐引用方式 GB/T 7714	Wang, Chan,Yang, Miao,Tian, Peng,et al. Dual template-directed synthesis of SAPO-34 nanosheet assemblies with improved stability in the methanol to olefins reaction[J]. journal of materials chemistry a,2015,3(10):5608-5616.
APA	Wang, Chan.,Yang, Miao.,Tian, Peng.,Xu, Shutao.,Yang, Yue.,...&Liu, Zhongmin.(2015).Dual template-directed synthesis of SAPO-34 nanosheet assemblies with improved stability in the methanol to olefins reaction.journal of materials chemistry a,3(10),5608-5616.
MLA	Wang, Chan,et al."Dual template-directed synthesis of SAPO-34 nanosheet assemblies with improved stability in the methanol to olefins reaction".journal of materials chemistry a 3.10(2015):5608-5616.