Facile construction of non-crystalline ZrO2 as an active yet durable catalyst for methane oxychlorination

Jincan Huang; Wei Wang; Dunfei Li; Shu Xu; Qing Liu; Xian Chen; Zhaoyang Fei; Zhuxiu Zhang; Mifen Cui; Jihai Tang; Xu Qiao

doi:10.1007/s10971-019-05089-x

Facile construction of non-crystalline ZrO₂ as an active yet durable catalyst for methane oxychlorination

Jincan Huang, Wei Wang, Dunfei Li, Shu Xu, Qing Liu, Xian Chen, Zhaoyang Fei, Zhuxiu Zhang, Mifen Cui, Jihai Tang, Xu Qiao

College of Chemical Engineering

Nanjing Tech University

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

10 Scopus citations

Abstract

An amorphous ZrO₂ mesoporous material was prepared by propylene oxide (PO)-assisted sol-gel process and was first evaluated in CH₄ oxychlorination. Various characterizations were conducted including XRD, N₂ adsorption–desorption, NH₃-TPD, CO₂-TPD, SEM, and TEM. Results showed the amorphous ZrO₂ with mesoporosity and large SSA exhibited abundant surface acid and base sites. As a non-redox catalyst, the amorphous ZrO₂ unexpectedly delivered much higher activity and better stability in CH₄ oxychlorination than conventional ZrO₂. The CH₄ conversion was 18.6% and the selectivity of CH₃Cl and CO reached 47.6% and 30.2% at 490 °C, respectively. The amorphous ZrO₂ could stably operate at 470 °C for 50 h without significant deactivation. Kinetic studies revealed that the CH₄ activation on the surface of the amorphous ZrO₂ was the rate-determining step. [Figure not available: see fulltext.].

Original language	English
Pages (from-to)	163-172
Number of pages	10
Journal	Journal of Sol-Gel Science and Technology
Volume	92
Issue number	1
DOIs	https://doi.org/10.1007/s10971-019-05089-x
State	Published - 15 Oct 2019

Keywords

CH activation
Non-crystalline ZrO
Oxychlorination
Sol-gel

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@article{c59d494562b8476081608563cbb26253,

title = "Facile construction of non-crystalline ZrO2 as an active yet durable catalyst for methane oxychlorination",

abstract = "An amorphous ZrO2 mesoporous material was prepared by propylene oxide (PO)-assisted sol-gel process and was first evaluated in CH4 oxychlorination. Various characterizations were conducted including XRD, N2 adsorption–desorption, NH3-TPD, CO2-TPD, SEM, and TEM. Results showed the amorphous ZrO2 with mesoporosity and large SSA exhibited abundant surface acid and base sites. As a non-redox catalyst, the amorphous ZrO2 unexpectedly delivered much higher activity and better stability in CH4 oxychlorination than conventional ZrO2. The CH4 conversion was 18.6% and the selectivity of CH3Cl and CO reached 47.6% and 30.2% at 490 °C, respectively. The amorphous ZrO2 could stably operate at 470 °C for 50 h without significant deactivation. Kinetic studies revealed that the CH4 activation on the surface of the amorphous ZrO2 was the rate-determining step. [Figure not available: see fulltext.].",

keywords = "CH activation, Non-crystalline ZrO, Oxychlorination, Sol-gel",

author = "Jincan Huang and Wei Wang and Dunfei Li and Shu Xu and Qing Liu and Xian Chen and Zhaoyang Fei and Zhuxiu Zhang and Mifen Cui and Jihai Tang and Xu Qiao",

note = "Publisher Copyright: {\textcopyright} 2019, Springer Science+Business Media, LLC, part of Springer Nature.",

year = "2019",

month = oct,

day = "15",

doi = "10.1007/s10971-019-05089-x",

language = "英语",

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TY - JOUR

T1 - Facile construction of non-crystalline ZrO2 as an active yet durable catalyst for methane oxychlorination

AU - Huang, Jincan

AU - Wang, Wei

AU - Li, Dunfei

AU - Xu, Shu

AU - Liu, Qing

AU - Chen, Xian

AU - Fei, Zhaoyang

AU - Zhang, Zhuxiu

AU - Cui, Mifen

AU - Tang, Jihai

AU - Qiao, Xu

PY - 2019/10/15

Y1 - 2019/10/15

N2 - An amorphous ZrO2 mesoporous material was prepared by propylene oxide (PO)-assisted sol-gel process and was first evaluated in CH4 oxychlorination. Various characterizations were conducted including XRD, N2 adsorption–desorption, NH3-TPD, CO2-TPD, SEM, and TEM. Results showed the amorphous ZrO2 with mesoporosity and large SSA exhibited abundant surface acid and base sites. As a non-redox catalyst, the amorphous ZrO2 unexpectedly delivered much higher activity and better stability in CH4 oxychlorination than conventional ZrO2. The CH4 conversion was 18.6% and the selectivity of CH3Cl and CO reached 47.6% and 30.2% at 490 °C, respectively. The amorphous ZrO2 could stably operate at 470 °C for 50 h without significant deactivation. Kinetic studies revealed that the CH4 activation on the surface of the amorphous ZrO2 was the rate-determining step. [Figure not available: see fulltext.].

AB - An amorphous ZrO2 mesoporous material was prepared by propylene oxide (PO)-assisted sol-gel process and was first evaluated in CH4 oxychlorination. Various characterizations were conducted including XRD, N2 adsorption–desorption, NH3-TPD, CO2-TPD, SEM, and TEM. Results showed the amorphous ZrO2 with mesoporosity and large SSA exhibited abundant surface acid and base sites. As a non-redox catalyst, the amorphous ZrO2 unexpectedly delivered much higher activity and better stability in CH4 oxychlorination than conventional ZrO2. The CH4 conversion was 18.6% and the selectivity of CH3Cl and CO reached 47.6% and 30.2% at 490 °C, respectively. The amorphous ZrO2 could stably operate at 470 °C for 50 h without significant deactivation. Kinetic studies revealed that the CH4 activation on the surface of the amorphous ZrO2 was the rate-determining step. [Figure not available: see fulltext.].

KW - CH activation

KW - Non-crystalline ZrO

KW - Oxychlorination

KW - Sol-gel

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ER -

Facile construction of non-crystalline ZrO₂ as an active yet durable catalyst for methane oxychlorination

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Keywords

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