Promoting effect and role of alkaline earth metal added to ZrO2-TiO2-supported CeO2 for dichloromethane oxidation

Ning Gao; Yukang Zhou; Mengjie Fan; Haitao Xu; Yingwen Chen; Shubao Shen

doi:10.1016/j.cej.2020.125193

Promoting effect and role of alkaline earth metal added to ZrO₂-TiO₂-supported CeO₂ for dichloromethane oxidation

Ning Gao, Yukang Zhou, Mengjie Fan, Haitao Xu, Yingwen Chen, Shubao Shen

COLLEGE OF BIOTECHNOLOGY AND PHARMACEUTICAL ENGINEERING

Nanjing Tech University

Research output: Contribution to journal › Article › peer-review

28 Scopus citations

Abstract

In this study, CeO₂/ZrO₂-TiO₂-x%Mg (CTZ-x%Mg) composite oxide was prepared by hydrothermal synthesis and impregnation. The performance of the catalyst for the combustion reaction of methylene chloride (DCM) was evaluated. CeO₂/ZrO₂-TiO₂-4%Mg (CTZ-4%Mg) showed good catalytic activity, anti-chlorine toxicity and CO₂ and HCl selectivity. The prepared catalyst was characterized and analyzed by XRD, BET, XPS, H₂-TPR and NH₃-TPD. The results showed that doping with the alkaline earth metal Mg enhanced the surface adsorption oxygen content and the lattice oxygen mobility of the catalyst carrier and promoted the auxiliary catalytic activity of ZrO₂-TiO₂. At the same time, the strong interaction between Mg-Ce-O induced the conversion of Ce³⁺ to Ce⁴⁺ on the catalyst surface while inhibiting the growth of CeO₂ crystals and improving redox performance.

Original language	English
Article number	125193
Journal	Chemical Engineering Journal
Volume	396
DOIs	https://doi.org/10.1016/j.cej.2020.125193
State	Published - 15 Sep 2020

Keywords

CeO/ZrO-TiO
Combustion reaction
Methylene chloride
Mg

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@article{a2f532dab4e14699b9fc98ee50b0c502,

title = "Promoting effect and role of alkaline earth metal added to ZrO2-TiO2-supported CeO2 for dichloromethane oxidation",

abstract = "In this study, CeO2/ZrO2-TiO2-x%Mg (CTZ-x%Mg) composite oxide was prepared by hydrothermal synthesis and impregnation. The performance of the catalyst for the combustion reaction of methylene chloride (DCM) was evaluated. CeO2/ZrO2-TiO2-4%Mg (CTZ-4%Mg) showed good catalytic activity, anti-chlorine toxicity and CO2 and HCl selectivity. The prepared catalyst was characterized and analyzed by XRD, BET, XPS, H2-TPR and NH3-TPD. The results showed that doping with the alkaline earth metal Mg enhanced the surface adsorption oxygen content and the lattice oxygen mobility of the catalyst carrier and promoted the auxiliary catalytic activity of ZrO2-TiO2. At the same time, the strong interaction between Mg-Ce-O induced the conversion of Ce3+ to Ce4+ on the catalyst surface while inhibiting the growth of CeO2 crystals and improving redox performance.",

keywords = "CeO/ZrO-TiO, Combustion reaction, Methylene chloride, Mg",

author = "Ning Gao and Yukang Zhou and Mengjie Fan and Haitao Xu and Yingwen Chen and Shubao Shen",

note = "Publisher Copyright: {\textcopyright} 2020 Elsevier B.V.",

year = "2020",

month = sep,

day = "15",

doi = "10.1016/j.cej.2020.125193",

language = "英语",

volume = "396",

journal = "Chemical Engineering Journal",

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TY - JOUR

T1 - Promoting effect and role of alkaline earth metal added to ZrO2-TiO2-supported CeO2 for dichloromethane oxidation

AU - Gao, Ning

AU - Zhou, Yukang

AU - Fan, Mengjie

AU - Xu, Haitao

AU - Chen, Yingwen

AU - Shen, Shubao

PY - 2020/9/15

Y1 - 2020/9/15

N2 - In this study, CeO2/ZrO2-TiO2-x%Mg (CTZ-x%Mg) composite oxide was prepared by hydrothermal synthesis and impregnation. The performance of the catalyst for the combustion reaction of methylene chloride (DCM) was evaluated. CeO2/ZrO2-TiO2-4%Mg (CTZ-4%Mg) showed good catalytic activity, anti-chlorine toxicity and CO2 and HCl selectivity. The prepared catalyst was characterized and analyzed by XRD, BET, XPS, H2-TPR and NH3-TPD. The results showed that doping with the alkaline earth metal Mg enhanced the surface adsorption oxygen content and the lattice oxygen mobility of the catalyst carrier and promoted the auxiliary catalytic activity of ZrO2-TiO2. At the same time, the strong interaction between Mg-Ce-O induced the conversion of Ce3+ to Ce4+ on the catalyst surface while inhibiting the growth of CeO2 crystals and improving redox performance.

AB - In this study, CeO2/ZrO2-TiO2-x%Mg (CTZ-x%Mg) composite oxide was prepared by hydrothermal synthesis and impregnation. The performance of the catalyst for the combustion reaction of methylene chloride (DCM) was evaluated. CeO2/ZrO2-TiO2-4%Mg (CTZ-4%Mg) showed good catalytic activity, anti-chlorine toxicity and CO2 and HCl selectivity. The prepared catalyst was characterized and analyzed by XRD, BET, XPS, H2-TPR and NH3-TPD. The results showed that doping with the alkaline earth metal Mg enhanced the surface adsorption oxygen content and the lattice oxygen mobility of the catalyst carrier and promoted the auxiliary catalytic activity of ZrO2-TiO2. At the same time, the strong interaction between Mg-Ce-O induced the conversion of Ce3+ to Ce4+ on the catalyst surface while inhibiting the growth of CeO2 crystals and improving redox performance.

KW - CeO/ZrO-TiO

KW - Combustion reaction

KW - Methylene chloride

KW - Mg

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U2 - 10.1016/j.cej.2020.125193

DO - 10.1016/j.cej.2020.125193

M3 - 文章

AN - SCOPUS:85083876589

SN - 1385-8947

VL - 396

JO - Chemical Engineering Journal

JF - Chemical Engineering Journal

M1 - 125193

ER -

Promoting effect and role of alkaline earth metal added to ZrO₂-TiO₂-supported CeO₂ for dichloromethane oxidation

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Keywords

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