Evaluation of the Properties of ZSM-5 Type Zeolites Modified with CexMg1-xAl2O4 Nanopowders in the Toluene Disproportionation Reaction

被引：5

作者：

Kerimli, F. Sh ^{[1
]}

Ilyasli, T. M. ^{[1
]}

Mammadov, S. E. ^{[1
]}

Akhmedova, N. F. ^{[1
]}

Mammadov, E. S. ^{[2
]}

Makmudova, N., I ^{[1
]}

Akhmedov, E., I ^{[1
]}

机构：

[1] Baku State Univ, AZ-1148 Baku, Azerbaijan

[2] Lomonosov Moscow State Univ, Baku Branch, AZ-1143 Baku, Azerbaijan

来源：

PETROLEUM CHEMISTRY | 2021年 / 61卷 / 08期

关键词：

Ce0.1Mg0.9Al2O4; nanopowders; HZSM-5; toluene; benzene; p-xylene; para-selectivity; SELECTIVITY; ALKYLATION; CATALYSTS; METHANOL; XYLENE; SITES; TRANSALKYLATION; ISOMERIZATION; HYDROCARBON; ADSORPTION;

D O I：

10.1134/S0965544121080041

中图分类号：

O62 [有机化学];

学科分类号：

070303 ; 081704 ;

摘要：

The effect of CexMg1-xAl2O4 spinel nanopowders on the textural, acidic, and catalytic properties displayed by HZSM-5 zeolite in the toluene disproportionation reaction was examined. Modification with CexMg1-xAl2O4 nanopowders caused a decrease in the concentration of strong protonic sites, formation of new stronger aprotonic sites, and a decrease in the pore volume of HZSM-5, thereby creating more steric hindrance to diffusion of o- and m-xylenes and enhancing para-selectivity of the catalyst. The possibility of achieving high p-xylene selectivity of 65.7-77.3% via toluene disproportionation over the optimal 5% Ce0.1Mg0.9Al2O4/HZSM-5 catalyst at toluene conversion of 20.3-29.7% was demonstrated.

引用

页码：895 / 900

页数：6

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