TOLUENE ISOPROPYLATION OVER ZEOLITE-BETA AND METALLOSILICATES OF MFI STRUCTURE

被引：50

作者：

PARIKH, PA

SUBRAHMANYAM, N

BHAT, YS

HALGERI, AB

机构：

[1] INDIAN PETROCHEM CORP LTD,RES CTR,BARODA 391346,GUJARAT,INDIA

[2] MAHARAJA SAYAJIRAO UNIV BARODA,FAC TECHNOL & ENGN,DEPT CHEM ENGN,BARODA 391001,INDIA

来源：

APPLIED CATALYSIS A-GENERAL | 1992年 / 90卷 / 01期

关键词：

PARA-CYMENE; MFI METALLOSILICATES; SURFACE PASSIVATION; TOLUENE ISOPROPYLATION; ZEOLITE-BETA;

D O I：

10.1016/0926-860X(92)80243-6

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：

The industrially important para-cymene synthesis has been carried out by toluene isopropylation on medium pore MFI zeolites and large pore zeolite beta. The roles of crystal size and change in acidity by isomorphous substitution on para-cymene selectivity are discussed. The external surface passivation by silica deposition was done to differentiate the reactions taking place on the external surface and inside the zeolite channels during alkylation. This has helped to enhance the fraction of para-cymene among cymenes to nearly 100%.

引用

页码：1 / 10

页数：10

共 10 条

[1]

Argauer R.J., 1972, U.S. Patent, Patent No. [3,702,886, 3702886]

[2]

BHAT YS, 1991, RECENT DEV CATALYSTS, P183

[3] CATALYTIC ACTIVITY OF LARGE-PORE HIGH SI/AL ZEOLITES - CRACKING OF HEPTANE ON H-BETA AND DEALUMINATED HY ZEOLITES [J].