Reaction kinetics and mechanism of n-hexane catalytic combustion over Co-ZSM-5 zeolites

被引：2

作者：

Velinova, Ralitsa ^{[1
]}

Grahovski, Bozhidar ^{[2
]}

Kolev, Hristo ^{[2
]}

Ivanov, Georgi ^{[1
]}

Todorova, Silviya ^{[2
]}

Naydenov, Anton ^{[1
]}

机构：

[1] Bulgarian Acad Sci, Inst Gen & Inorgan Chem, Acad G Bonchev St,Bldg 11, Sofia 1113, Bulgaria

[2] Bulgarian Acad Sci, Inst Catalysis, Acad G Bonchev St,Bldg 11, Sofia 1113, Bulgaria

来源：

MATERIALS TODAY-PROCEEDINGS | 2022年 / 61卷

关键词：

Co-ZSM-5; Catalytic combustion; VOCs; n-hexane; Langmuir-Hinshelwood; VOLATILE ORGANIC-COMPOUNDS; LOW-TEMPERATURE; ZSM-5; ADSORPTION; OXIDATION; REMOVAL; OXIDES;

D O I：

10.1016/j.matpr.2022.02.360

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In the present study, the Co-ZSM-5 catalysts with different Si/Al ratios of 23, 40 and 100 were studied by tests on the combustion of n-hexane. It was observed that the Co-ZSM-5 catalyst with ratio of Si/Al = 23 present the best catalytic performance, which is mainly attributed to higher concentration of active surface Co3+ species. The obtained data from the reaction kinetics experiments and the applied kinetics modeling lead to the suggestion that n -hexane complete oxidation on all catalysts proceeded via LangmuirHinshelwood mechanism by dissociative adsorption of oxygen, the reacting hydrocarbon and oxygen being adsorbed on different active sites.Copyright (C) 2022 Elsevier Ltd. All rights reserved.

引用

页码：1255 / 1259

页数：5

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