Ionothermal synthesis of AlPO4 molecular sieves in the presence of quaternary ammonium cation

被引：26

作者：

Pei, Renyan ^{[1
,2
]}

Tian, Zhijian ^{[1
]}

Wei, Ying ^{[1
,2
]}

Li, Keda ^{[1
,2
]}

Xu, Yunpeng ^{[1
]}

Wang, Lei ^{[1
]}

Ma, Huaijun ^{[1
]}

机构：

[1] Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China

[2] Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China

来源：

MATERIALS LETTERS | 2010年 / 64卷 / 19期

基金：

美国国家科学基金会;

关键词：

Ionothermal synthesis; Molecular sieves; Quaternary ammonium cation; ALUMINOPHOSPHATE; ZEOLITE; AMINES;

D O I：

10.1016/j.matlet.2010.06.060

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Several aluminophosphate molecular sieves were synthesized ionothermally, in ionic liquid 1-butyl-3-methyl imidazolium bromide ([BMIm]Br) with adding various quaternary ammonium cation (quats, including tetramethyl ammonium (TMA(+)), choline, tetraethyl ammonium (TEA(+)), tetrapropyl ammonium (TPA(+)) and tetrabutyl ammonium (TBA(+))). These products were characterized by X-ray diffraction (XRD), C-13 nuclear magnetic resonance (NMR) and scanning electron microscope (SEM). The result indicates that the crystallization pathway is changed by adding these quats. AlPO4-42 (IZA code LTA) crystallizes when TMA(+) is added in the system, AlPO4-5 (AFI) crystallizes when choline or TEA(+) is added, and the AlPO4-11 (AEL) crystallizes when TPA(+) or TBA(+) is added. C-13 NMR analysis indicates that these introduced quats may either replace the [BMIm](+) to act as template alone, or direct structures cooperatively with the [BMIm](+), or in some cases they cannot change the original structure directing effect of [BMIm](+). (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：2118 / 2121

页数：4

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