Transalkylation of benzene with 1,2,4-trimethylbenzene over nanosized ZSM-5

被引：32

作者：

Cheng, Xiaojing ^{[1
,2
]}

Wang, Xiangsheng ^{[1
]}

Long, Huayun ^{[1
]}

机构：

[1] Dalian Univ Technol, State Key Lab Fine Chem, Dept Catalyt Chem & Engn, Dalian 116012, Peoples R China

[2] Xinjiang Univ, Sch Chem & Chem Engn, Urumqi 830046, Peoples R China

来源：

MICROPOROUS AND MESOPOROUS MATERIALS | 2009年 / 119卷 / 1-3期

关键词：

Nanosized ZSM-5; Transalkylation; 1,2,4-Trimethylbenzene; Acidity; Adsorption; DISPROPORTIONATION;

D O I：

10.1016/j.micromeso.2008.10.031

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Nanosized ZSM-5 (NHZ) and micronsized ZSM-5 (MHZ) were employed in the transalkylation of benzene with 1,2,4-trimethylbenzene (1,2,4-TMB). Although the same reactions proceeded on the two catalysts, the catalytic activity of NHZ was higher than that of MHZ. The characterization results showed that compared with MHZ, NHZ had a higher adsorption capacity for 1,2,4-TMB, lager external surface area and more external strong acid sites. All these factors resulted in high activity of NHZ. The 48 h run results showed that NHZ had good ability to tolerate the coke deposits relative to MHZ. The secondary pores accommodated the coke. The activity and stability of HP zeolite was also studied for comparison. (C) 2008 Elsevier Inc. All rights reserved.

引用

页码：171 / 175

页数：5

共 14 条

[1] Surface modification of nano-sized HZSM-5 and HFER by pre-coking and silanization [J].