Synthesis of Hierarchically Porous FAU/γ-Al2O3 Composites with Different Morphologies via Directing Agent Induced Method

被引：0

作者：

Wang Jia ^{[1
]}

Zhao Tianbo ^{[1
]}

Li Zunfeng ^{[1
]}

Zong Baoning ^{[2
]}

Du Zexue ^{[2
]}

Zeng Jianli ^{[2
]}

机构：

[1] Beijing Inst Technol, Minist Educ, Key Lab Cluster Sci, Beijing 100081, Peoples R China

[2] SINOPEC Res Inst Petr Proc, Beijing 100083, Peoples R China

来源：

CHINA PETROLEUM PROCESSING & PETROCHEMICAL TECHNOLOGY | 2016年 / 18卷 / 03期

基金：

中国国家自然科学基金;

关键词：

monolithic FAU/gamma-Al2O3 composites; hierarchically porous; different morphologies; directing agent induced method; STEAM-ASSISTED CONVERSION; IN-SITU; BENZENE ADSORPTION; CATALYTIC CRACKING; ZEOLITE-BETA; SILICA-GEL; MEMBRANES; MONOLITHS; PERFORMANCE; POROSITY;

D O I：

暂无

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

Zeolite FAU composites with a macro/meso-microporous hierarchical structure were hydrothermally synthesized using macro-mesoporous gamma-Al2O3 monolith as the substrate by means of the liquid crystallization directing agent (LCDA) induced method. No template was needed throughout the synthesis processes. The structure and porosity of zeolite composites were analyzed by means of X-ray powder diffraction (XRD), scanning electron microscopy (SEM) and N-2 adsorption-desorption isotherms. The results showed that the supported zeolite composites with varied zeolitic crystalline phases and different morphologies can be obtained by adjusting the crystallization parameters, such as the crystallization temperature, the composition and the alkalinity of the precursor solution. The presence of LCDA was defined as a determinant for synthesizing the zeolite composites. The mechanisms for formation of the hierarchically porous FAU zeolite composites in the LCDA induced synthesis process were discussed. The resulting monolithic zeolite with a trimodal-porous hierarchical structure shows potential applicability where facile diffusion is required.

引用

页码：22 / 34

页数：13

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