Synergism in NiMoOx precursors essential for CH 4/CO2 dry reforming

Chuan Shi; Shaohua Zhang; Xiaosong Li; Anjie Zhang; Ming Shi; Yongjun Zhu; Jieshan Qiu; Chak Tong AU

doi:10.1016/j.cattod.2013.10.076

Synergism in NiMoO_x precursors essential for CH ₄/CO₂ dry reforming

Chuan Shi^*, Shaohua Zhang, Xiaosong Li, Anjie Zhang, Ming Shi, Yongjun Zhu, Jieshan Qiu, Chak Tong AU

^*Corresponding author for this work

Department of Chemistry

Research output: Contribution to journal › Journal article › peer-review

38 Citations (Scopus)

Abstract

Ni-Mo₂C(CP) and Ni-Mo₂C(MM) catalysts were prepared through carbonization of NiMoO_x precursors prepared by co-precipitation (CP) and mechanical mixing (MM), respectively. Different preparation methods lead to different chemical compositions, reduction properties, as well as carbonization process of NiMoO_x precursors. It was found that Ni-Mo₂C(CP) has better Ni dispersion than Ni-Mo ₂C(MM). With smaller Ni particles and higher CH₄ dissociation rate, Ni-Mo₂C(CP) performs better than Ni-Mo ₂C(MM) in CH₄/CO₂ reforming. It is deduced that nickel is better stabilized in NiMoO₄ than in NiO, and the sintering of metallic nickel during high-temperature carburization is less severe with NiMoO₄(CP). Based on the results, we address for the first time the key roles of NiMoO₄ as a precursor for the formation of Ni-Mo ₂C effective for CH₄/CO₂ reforming.

Original language	English
Pages (from-to)	46-52
Number of pages	7
Journal	Catalysis Today
Volume	233
DOIs	https://doi.org/10.1016/j.cattod.2013.10.076
Publication status	Published - 15 Sept 2014

Scopus Subject Areas

Catalysis
Chemistry(all)

User-Defined Keywords

Carbon dioxide
Methane
Molybdenum carbide
Nickel

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10.1016/j.cattod.2013.10.076

Cite this

@article{2cd296b0dded4a8e87da830f1ae83b9e,

title = "Synergism in NiMoOx precursors essential for CH 4/CO2 dry reforming",

abstract = "Ni-Mo2C(CP) and Ni-Mo2C(MM) catalysts were prepared through carbonization of NiMoOx precursors prepared by co-precipitation (CP) and mechanical mixing (MM), respectively. Different preparation methods lead to different chemical compositions, reduction properties, as well as carbonization process of NiMoOx precursors. It was found that Ni-Mo2C(CP) has better Ni dispersion than Ni-Mo 2C(MM). With smaller Ni particles and higher CH4 dissociation rate, Ni-Mo2C(CP) performs better than Ni-Mo 2C(MM) in CH4/CO2 reforming. It is deduced that nickel is better stabilized in NiMoO4 than in NiO, and the sintering of metallic nickel during high-temperature carburization is less severe with NiMoO4(CP). Based on the results, we address for the first time the key roles of NiMoO4 as a precursor for the formation of Ni-Mo 2C effective for CH4/CO2 reforming.",

keywords = "Carbon dioxide, Methane, Molybdenum carbide, Nickel",

author = "Chuan Shi and Shaohua Zhang and Xiaosong Li and Anjie Zhang and Ming Shi and Yongjun Zhu and Jieshan Qiu and AU, {Chak Tong}",

note = "Funding Information: The work was supported by the National Natural Science Foundation of China (Nos. 21073014 and 21373037), Natural Science Foundation of Liaoning Province (No. 201102034 ) and by the Program for New Century Excellent Talents in University ( NCET-07-0136 ), as well as by the Fundamental Research Funds for the Central Universities (No. DLUT12LK23 ).",

year = "2014",

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doi = "10.1016/j.cattod.2013.10.076",

language = "English",

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T1 - Synergism in NiMoOx precursors essential for CH 4/CO2 dry reforming

AU - Shi, Chuan

AU - Zhang, Shaohua

AU - Li, Xiaosong

AU - Zhang, Anjie

AU - Shi, Ming

AU - Zhu, Yongjun

AU - Qiu, Jieshan

AU - AU, Chak Tong

N1 - Funding Information: The work was supported by the National Natural Science Foundation of China (Nos. 21073014 and 21373037), Natural Science Foundation of Liaoning Province (No. 201102034 ) and by the Program for New Century Excellent Talents in University ( NCET-07-0136 ), as well as by the Fundamental Research Funds for the Central Universities (No. DLUT12LK23 ).

PY - 2014/9/15

Y1 - 2014/9/15

N2 - Ni-Mo2C(CP) and Ni-Mo2C(MM) catalysts were prepared through carbonization of NiMoOx precursors prepared by co-precipitation (CP) and mechanical mixing (MM), respectively. Different preparation methods lead to different chemical compositions, reduction properties, as well as carbonization process of NiMoOx precursors. It was found that Ni-Mo2C(CP) has better Ni dispersion than Ni-Mo 2C(MM). With smaller Ni particles and higher CH4 dissociation rate, Ni-Mo2C(CP) performs better than Ni-Mo 2C(MM) in CH4/CO2 reforming. It is deduced that nickel is better stabilized in NiMoO4 than in NiO, and the sintering of metallic nickel during high-temperature carburization is less severe with NiMoO4(CP). Based on the results, we address for the first time the key roles of NiMoO4 as a precursor for the formation of Ni-Mo 2C effective for CH4/CO2 reforming.

AB - Ni-Mo2C(CP) and Ni-Mo2C(MM) catalysts were prepared through carbonization of NiMoOx precursors prepared by co-precipitation (CP) and mechanical mixing (MM), respectively. Different preparation methods lead to different chemical compositions, reduction properties, as well as carbonization process of NiMoOx precursors. It was found that Ni-Mo2C(CP) has better Ni dispersion than Ni-Mo 2C(MM). With smaller Ni particles and higher CH4 dissociation rate, Ni-Mo2C(CP) performs better than Ni-Mo 2C(MM) in CH4/CO2 reforming. It is deduced that nickel is better stabilized in NiMoO4 than in NiO, and the sintering of metallic nickel during high-temperature carburization is less severe with NiMoO4(CP). Based on the results, we address for the first time the key roles of NiMoO4 as a precursor for the formation of Ni-Mo 2C effective for CH4/CO2 reforming.

KW - Carbon dioxide

KW - Methane

KW - Molybdenum carbide

KW - Nickel

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