Overgrowth of mesoporous MCM-41 on faujasite

被引：171

作者：

Kloetstra, KR

Zandbergen, HW

Jansen, JC

vanBekkum, H

机构：

[1] DELFT UNIV TECHNOL,ORGAN CHEM & CATALYSIS LAB,NL-2628 BL DELFT,NETHERLANDS

[2] DELFT UNIV TECHNOL,MAT SCI LAB,NL-2628 AL DELFT,NETHERLANDS

来源：

MICROPOROUS MATERIALS | 1996年 / 6卷 / 5-6期

关键词：

MCM41; faujasite; overgrowth; pore size; bimodal pore size distribution; vacuum gasoil; cracking of VGO;

D O I：

10.1016/0927-6513(96)00036-3

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Zeolite faujasite overgrown with a thin layer of mesoporous MCM-41 has been prepared. Transmission electron microscopy shows that a large part of the zeolite surface is covered with an MCM-41 layer of 5 to 20 nm thickness. The composite MCM-41/FAU is formed by successive synthesis of FAU and MCM-41. Also MCM-41 overgrowth on pre-added FAU crystals is investigated. The overgrowth of MCM-41 on FAU is stimulated by an increase in the external cation exchange capacity of FAU. This new biporous molecular sieve shows interesting catalytic applications. Cracking of vacuum gasoil by MCM-41 coated USY shows a higher conversion of heavy products compared to USY.

引用

页码：287 / 293

页数：7

共 24 条

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