Catalytic behavior of ITQ-13 zeolite in benzene and toluene ethylation

IF 5.2 2区化学 Q1 CHEMISTRY, APPLIED

Catalysis Today Pub Date : 2025-03-22 DOI:10.1016/j.cattod.2025.115288

M. Teresa Portilla , Avelino Corma , Cristina Martínez , Susana Valencia , Francisco J. Llopis

引用次数: 0

Abstract

The ITQ-13 zeolite (ITH) presents a three-dimensional channel system formed by channels delimited by rings of 9 and 10 tetrahedra (9MR and 10MR). This material has been studied as a catalyst in reactions of interest in the petrochemical industry, which are carried out on a commercial scale in the presence of medium-pore zeolites, such as the alkylation of benzene or toluene with ethylene or ethanol. Due to its acidic properties and its particular topology, zeolite ITQ-13 presents a comparable activity to that of ZSM-5 or MCM-22, employed at commercial scale, but also higher selectivity to the main alkylation products and lower deactivation rate. The large cavities located at the intersections between the 9MR and 10MR channels, capable of hosting larger reaction intermediates than ZSM-5, and the greater activity of its external surface, could be responsible for the improved catalytic behavior of ITQ-13.

查看原文本刊更多论文

ITQ-13沸石在苯和甲苯乙化反应中的催化行为

ITQ-13沸石（ITH）呈现出由9和10个四面体环（9MR和10MR）划分的通道所形成的三维通道体系。这种材料在石油化工工业中作为催化剂进行了研究，这些反应是在中等孔沸石存在的情况下进行的，例如苯或甲苯与乙烯或乙醇的烷基化反应。由于其酸性性质和特殊的拓扑结构，ITQ-13分子筛的活性与ZSM-5或MCM-22分子筛相当，但对主要烷基化产物的选择性更高，失活率更低。位于9MR和10MR通道交界处的大空腔能够容纳比ZSM-5更大的反应中间体，并且其外表面的活性更大，这可能是ITQ-13的催化行为得到改善的原因。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Catalysis Today 化学-工程：化工

CiteScore

11.50

自引率

3.80%

发文量

573

审稿时长

2.9 months

期刊介绍： Catalysis Today focuses on the rapid publication of original invited papers devoted to currently important topics in catalysis and related subjects. The journal only publishes special issues (Proposing a Catalysis Today Special Issue), each of which is supervised by Guest Editors who recruit individual papers and oversee the peer review process. Catalysis Today offers researchers in the field of catalysis in-depth overviews of topical issues. Both fundamental and applied aspects of catalysis are covered. Subjects such as catalysis of immobilized organometallic and biocatalytic systems are welcome. Subjects related to catalysis such as experimental techniques, adsorption, process technology, synthesis, in situ characterization, computational, theoretical modeling, imaging and others are included if there is a clear relationship to catalysis.