用于合成分级多孔沸石的介孔碳硅复合材料的原位重结晶

In Situ Recrystallization of Mesoporous Carbon-Silica Composite for the Synthesis of Hierarchically Porous Zeolites.

作者信息

Du Jun, Wang Yan, Wang Yan, Li Ruifeng

机构信息

College of Chemistry and Chemical Engineering, Taiyuan University of Technology, Taiyuan 030024, China.

School of Chemistry and Chemical Engineering, Shanxi Datong University, Datong 037009, China.

出版信息

Materials (Basel). 2020 Apr 2;13(7):1640. doi: 10.3390/ma13071640.

DOI:10.3390/ma13071640

PMID:32252258

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC7178382/

Abstract

Hierarchically porous ZSM-5 was prepared by utilizing a two-step crystallization procedure with carbon-silica composites as precursors. The hierarchically porous zeolites obtained a regular mesoporous structure with aluminum incorporated into the carbon-silica composite frameworks. The carbon-silica composite zeolites were characterized by XRD, TEM, SEM, and nitrogen adsorption/desorption. As-prepared hierarchical zeolites were used in the 1,3,5-triisopropylbenzene (TIPB) cracking reaction and exhibited significantly high TIPB conversion, while the accessibility factors were also determined.

摘要

通过以碳-二氧化硅复合材料为前驱体采用两步结晶法制备了分级多孔ZSM-5。所得分级多孔沸石具有规则的介孔结构，铝掺入到碳-二氧化硅复合骨架中。采用XRD、TEM、SEM和氮吸附/脱附对碳-二氧化硅复合沸石进行了表征。将所制备的分级沸石用于1,3,5-三异丙基苯（TIPB）裂解反应，表现出显著高的TIPB转化率，同时还测定了可及性因子。