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

共 50 条

[31] Investigation of the coupled reaction of methyl acetate and n-hexane over HZSM-5 [J].

Yang, Kuo ;

Li, Jinzhe ;

Zhang, Xiao ;

Liu, Zhongmin .

CHINESE JOURNAL OF CATALYSIS, 2018, 39 (12) :1960-1970

[32] A mechanistic investigation of the coupled reaction of n-hexane and methanol over HZSM-5 [J].

Chang, Fuxiang ;

Wei, Yingxu ;

Liu, Xianbin ;

Zhao, Yinfeng ;

Xu, Lei ;

Sun, Ying ;

Zhang, Dazhi ;

He, Yanli ;

Liu, Zhongmin .

APPLIED CATALYSIS A-GENERAL, 2007, 328 (02) :163-173

[33] Co-conversion of methanol and n-hexane into aromatics using intergrown ZSM-5/ZSM-11 as a catalyst [J].

Wei, Shumei ;

Xu, Yarong ;

Jin, Zhaoyang ;

Zhu, Xuedong .

FRONTIERS OF CHEMICAL SCIENCE AND ENGINEERING, 2020, 14 (05) :783-792

[34] Influences of Mesoporosity Generation in ZSM-5 and Zeolite Beta on Catalytic Performance During n-Hexane Isomerization [J].

Modhera, Bharat K. ;

Chakraborty, Mousumi ;

Bajaj, Hari C. ;

Parikh, Parimal A. .

CATALYSIS LETTERS, 2011, 141 (08) :1182-1190

[35] Reaction kinetics of selective catalytic reduction of NOx by propylene over Fe/ZSM-5 [J].

Cheng, Xingxing ;

Bi, Xiaotao T. .

CHEMICAL ENGINEERING JOURNAL, 2012, 211 :453-462

[36] Catalytic activity of H-ZSM-5 and Cu-HZSM-5 zeolites of medium SiO2/Al2O3 ratio in conversion of n-hexane to aromatics [J].

Tursunov, Obid ;

Kustov, Leonid ;

Tilyabaev, Zaid .

JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING, 2019, 180 :773-778

[37] Catalytic combustion of hexane over transition metal modified zeolites NaX and CaA [J].

Díaz, E ;

Ordóñez, S ;

Vega, A ;

Coca, J .

APPLIED CATALYSIS B-ENVIRONMENTAL, 2005, 56 (04) :313-322

[38] Room-temperature interaction of n-hexane with ZSM-5 zeolites -: Microcalorimetric and temperature-programmed desorption studies [J].

Rac, V. ;

Rakic, Vesna ;

Gajinov, S. ;

Dondur, Vera ;

Auroux, Aline .

JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY, 2006, 84 (01) :239-245

[39] Selective Production of Light Olefins from Catalytic Cracking of n-Hexane over OSDA-Free Beta Zeolites [J].

Wang, Yong ;

Otomo, Ryoichi ;

Tatsumi, Takashi ;

Yokoi, Toshiyuki .

CATALYSIS SURVEYS FROM ASIA, 2016, 20 (01) :1-12

[40] Crystal size of MFI-type zeolites for catalytic cracking of n-hexane under reaction-control conditions [J].

Nakasaka, Yuta ;

Okamura, Takuya ;

Konno, Hiroki ;

Tago, Teruoki ;

Masuda, Takao .

MICROPOROUS AND MESOPOROUS MATERIALS, 2013, 182 :244-249

← 1 2 3 4 5 →