In situ synthesis, characterization and catalytic activity of ZSM-5 zeolites on kaolin microspheres from amine-free system

被引：36

作者：

Wang, Youhe ^{[1
]}

Feng, Rui ^{[1
]}

Li, Xiang ^{[1
]}

Liu, Xinmei ^{[1
]}

Yan, Zifeng ^{[1
]}

机构：

[1] China Univ Petr, State Key Lab Heavy Oil Proc, Key Lab Catalysis, CNPC, Qingdao 266555, Peoples R China

来源：

JOURNAL OF POROUS MATERIALS | 2013年 / 20卷 / 01期

关键词：

Kaolin microspheres; ZSM-5; zeolite; In situ synthesis; Amine-free system; FCC additive; MULLITE COMPOSITE; IDENTIFICATION; HONEYCOMB;

D O I：

10.1007/s10934-012-9582-1

中图分类号：

O69 [应用化学];

学科分类号：

070301 [无机化学];

摘要：

ZSM-5 zeolites were synthesized by an in situ hydrothermal crystallization method on kaolin microspheres from an organic template-free solution. The as-synthesized samples were characterized by using X-ray diffraction, scanning electron microscopy, Fourier Transform Infrared spectrometry, N-2 adsorption and desorption, and Temperature Programmed Desorption. The results showed that small-sized ZSM-5 crystallites with less than 1 micron in diameter were effectively formed on kaolin microspheres. The synthesized products indicated high hydrothermal stability and strong acidity. By mixing the H-type ZSM-5/CMK composite with a Fluid Catalytic Cracking base catalyst, the performance of the catalyst is then evaluated. The results of catalytic performance evaluation showed that with the addition of ZSM-5/CKM, it favored the production of light olefins such as propylene and butylenes by catalytic cracking of vacuum gas oil.

引用

页码：137 / 141

页数：5

共 19 条

[1]

Enhancement of propylene production in a downer FCC operation using a ZSM-5 additive [J].