Effect of zinc salt on the synthesis of ZSM-5 for alkylation of benzene with ethanol

被引：39

作者：

Gao, Junhua ^{[1
,2
]}

Zhang, Lidong ^{[1
,2
]}

Hu, Jinxian ^{[1
]}

Li, Wenhuai ^{[1
]}

Wang, Jianguo ^{[1
]}

机构：

[1] Chinese Acad Sci, Inst Coal Chem, State Key Lab Coal Convers, Taiyuan 030001, Shanxi, Peoples R China

[2] Chinese Acad Sci, Grad Univ, Beijing 100039, Peoples R China

来源：

CATALYSIS COMMUNICATIONS | 2009年 / 10卷 / 12期

关键词：

Alkylation; Benzene; Ethanol; HZSM-5; Zinc salt; CATALYTIC-ACTIVITY; ADSORBED PYRIDINE; AQUEOUS-SOLUTION; ZEOLITES; IDENTIFICATION; ETHYLENE; ACIDITY; IR;

D O I：

10.1016/j.catcom.2009.04.029

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：

ZSM-5 zeolites were synthesized by adding Zn(NO3)(2) aqueous solution into the gel precursor. The materials were characterized by XRD, ICP, nitrogen adsorption, FT-IR, SEM, Al-27 MAS NMR, NH3-TPD and Py-IR. After adding zinc salt into the gel precursor at synthesis, the products crystal size decreased obviously and the ratio of Lewis/Bronsted acid increased significantly. All the ZSM-5 samples synthesized in presence of zinc salt contained a small amount of zinc, the maximum was 0.026 wt%. Catalytic tests of alkylation of benzene with ethanol were investigated over these materials and the zinc containing catalysts showed higher ethylbenzene selectivity. The increased ethylbenzene selectivity was attributed to the change of acidity and crystal size. (C) 2009 Elsevier B.V. All rights reserved.

引用

页码：1615 / 1619

页数：5

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