Optimized Ni-based catalysts for methane reforming with O2-containing CO2

Guixian DENG; Guifang ZHANG; Xing ZHU; Qingjie GUO; Xiangbiao LIAO; Xi CHEN; Kongzhai LI

doi:10.1016/j.apcatb.2021.120033

Optimized Ni-based catalysts for methane reforming with O₂-containing CO₂

Guixian DENG, Guifang ZHANG, Xing ZHU, Qingjie GUO, Xiangbiao LIAO, Xi CHEN, Kongzhai LI^*

^*Corresponding author for this work

Research output: Journal Publications › Journal Article (refereed) › peer-review

38 Citations (Scopus)

Abstract

Reduction of CO₂ in presence of oxidative impurity (e.g., O₂) is more promising than utilization of pure CO₂ due to skyrocketing cost for purification of captured CO₂ from air or industrial exhaust gas. In this work, Ni-based catalysts are modified by CeO₂ and ZrO₂ to suppress negative effect of O₂ on reforming of CO₂ with methane, which show high CH₄ conversion (97 %) and CO₂ conversion (95 %) at 750 °C and can maintain high CO₂ conversion even with high O₂ content. The physicochemical characterizations on fresh and spent catalysts show that the interaction among Ni, CeO₂ and ZrO₂ results in well dispersion of smaller Ni particles, even after long-term testing. In situ DRIFTS results show that Ni/CeO₂-ZrO₂-SiO₂ catalyst shows advantage to activate CH₄ to generate active CH₃*, promoting the formation of CO, and the CeO₂-ZrO₂ solid solution improves the CO₂ adsorption, thereby reducing the competitive effect of CO₂ and O₂.

Original language	English
Article number	120033
Number of pages	12
Journal	Applied Catalysis B: Environmental
Volume	289
DOIs	https://doi.org/10.1016/j.apcatb.2021.120033
Publication status	Published - 15 Jul 2021
Externally published	Yes

Bibliographical note

This work was supported by the Open Project Program of the State Key Laboratory of High-efficiency Utilization of Coal and Green Chemical Engineering (No. 2020-KF-25 ), the Qinglan Project of Kunming University of Science and Technology , the Youth Top Talent Program of Yunnan Province , and the Key International Cooperation Project of Yunnan Provincial Science and Technology Department (No. 2018IA055 ).

Keywords

CeO-ZrO
CO conversion
Methane reforming
Ni-based catalysts
O-containing CO

Access to Document

10.1016/j.apcatb.2021.120033

Cite this

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title = "Optimized Ni-based catalysts for methane reforming with O2-containing CO2",

abstract = "Reduction of CO2 in presence of oxidative impurity (e.g., O2) is more promising than utilization of pure CO2 due to skyrocketing cost for purification of captured CO2 from air or industrial exhaust gas. In this work, Ni-based catalysts are modified by CeO2 and ZrO2 to suppress negative effect of O2 on reforming of CO2 with methane, which show high CH4 conversion (97 %) and CO2 conversion (95 %) at 750 °C and can maintain high CO2 conversion even with high O2 content. The physicochemical characterizations on fresh and spent catalysts show that the interaction among Ni, CeO2 and ZrO2 results in well dispersion of smaller Ni particles, even after long-term testing. In situ DRIFTS results show that Ni/CeO2-ZrO2-SiO2 catalyst shows advantage to activate CH4 to generate active CH3*, promoting the formation of CO, and the CeO2-ZrO2 solid solution improves the CO2 adsorption, thereby reducing the competitive effect of CO2 and O2.",

keywords = "CeO-ZrO, CO conversion, Methane reforming, Ni-based catalysts, O-containing CO",

author = "Guixian DENG and Guifang ZHANG and Xing ZHU and Qingjie GUO and Xiangbiao LIAO and Xi CHEN and Kongzhai LI",

note = "This work was supported by the Open Project Program of the State Key Laboratory of High-efficiency Utilization of Coal and Green Chemical Engineering (No. 2020-KF-25 ), the Qinglan Project of Kunming University of Science and Technology , the Youth Top Talent Program of Yunnan Province , and the Key International Cooperation Project of Yunnan Provincial Science and Technology Department (No. 2018IA055 ).",

year = "2021",

month = jul,

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doi = "10.1016/j.apcatb.2021.120033",

language = "English",

volume = "289",

journal = "Applied Catalysis B: Environmental",

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TY - JOUR

T1 - Optimized Ni-based catalysts for methane reforming with O2-containing CO2

AU - DENG, Guixian

AU - ZHANG, Guifang

AU - ZHU, Xing

AU - GUO, Qingjie

AU - LIAO, Xiangbiao

AU - CHEN, Xi

AU - LI, Kongzhai

N1 - This work was supported by the Open Project Program of the State Key Laboratory of High-efficiency Utilization of Coal and Green Chemical Engineering (No. 2020-KF-25 ), the Qinglan Project of Kunming University of Science and Technology , the Youth Top Talent Program of Yunnan Province , and the Key International Cooperation Project of Yunnan Provincial Science and Technology Department (No. 2018IA055 ).

PY - 2021/7/15

Y1 - 2021/7/15

N2 - Reduction of CO2 in presence of oxidative impurity (e.g., O2) is more promising than utilization of pure CO2 due to skyrocketing cost for purification of captured CO2 from air or industrial exhaust gas. In this work, Ni-based catalysts are modified by CeO2 and ZrO2 to suppress negative effect of O2 on reforming of CO2 with methane, which show high CH4 conversion (97 %) and CO2 conversion (95 %) at 750 °C and can maintain high CO2 conversion even with high O2 content. The physicochemical characterizations on fresh and spent catalysts show that the interaction among Ni, CeO2 and ZrO2 results in well dispersion of smaller Ni particles, even after long-term testing. In situ DRIFTS results show that Ni/CeO2-ZrO2-SiO2 catalyst shows advantage to activate CH4 to generate active CH3*, promoting the formation of CO, and the CeO2-ZrO2 solid solution improves the CO2 adsorption, thereby reducing the competitive effect of CO2 and O2.

AB - Reduction of CO2 in presence of oxidative impurity (e.g., O2) is more promising than utilization of pure CO2 due to skyrocketing cost for purification of captured CO2 from air or industrial exhaust gas. In this work, Ni-based catalysts are modified by CeO2 and ZrO2 to suppress negative effect of O2 on reforming of CO2 with methane, which show high CH4 conversion (97 %) and CO2 conversion (95 %) at 750 °C and can maintain high CO2 conversion even with high O2 content. The physicochemical characterizations on fresh and spent catalysts show that the interaction among Ni, CeO2 and ZrO2 results in well dispersion of smaller Ni particles, even after long-term testing. In situ DRIFTS results show that Ni/CeO2-ZrO2-SiO2 catalyst shows advantage to activate CH4 to generate active CH3*, promoting the formation of CO, and the CeO2-ZrO2 solid solution improves the CO2 adsorption, thereby reducing the competitive effect of CO2 and O2.

KW - CeO-ZrO

KW - CO conversion

KW - Methane reforming

KW - Ni-based catalysts

KW - O-containing CO

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DO - 10.1016/j.apcatb.2021.120033

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