Improvement of catalytic properties of SAPO-11 molecular sieves synthesized in H2O-CTAB-butanol system

被引：55

作者：

Huang, XD ^{[1
]}

Wang, LJ ^{[1
]}

Kong, LD ^{[1
]}

Li, QZ ^{[1
]}

机构：

[1] Fudan Univ, Dept Chem, Lab Mol Catlaysis & Innovat Mat, Shanghai 200433, Peoples R China

来源：

APPLIED CATALYSIS A-GENERAL | 2003年 / 253卷 / 02期

基金：

中国国家自然科学基金;

关键词：

SAPO-11; H2O-CTAB-butanol system; hydroisomerization;

D O I：

10.1016/S0926-860X(03)00562-3

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

SAPO-11 molecular sieves have been synthesized in both the conventional synthesis system and the H2O-cetyltrimethylammomium bromide (CTAB)-butanol system by the hydrothermal synthesis method. Characterization of these samples by X-ray diffraction (XRD), infrared spectroscopy (IR) of the adsorbed pyridine, Si-29 solid-state magic-angle spinning (MAS), nuclear magnetic resonance (NMR), and catalytic test reaction reveals that SAPO-11 synthesized in H2O-CTAB-butanol system has small crystal sizes and larger amounts of Bronsted acid sites. Such sites not only give rise to an increase of n-dodecane conversion. isomer yield and selectivity, but also increase the monobranched isomer selectivity. (C) 2003 Elsevier B.V. All rights reserved.

引用

页码：461 / 467

页数：7

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