Effect of preparation methods on the catalytic performance of Ni-Al2O3 for CO2-CH4 reforming

MO Wen-long; MA Feng-yun; LIU Yue-e; LIU Jing-mei; ZHONG Mei; AISHA·nulahong

Volume 43 Issue 09

Sep. 2015

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Article Navigation > Journal of Fuel Chemistry and Technology > 2015 > 43(09): 1083-1091

MO Wen-long, MA Feng-yun, LIU Yue-e, LIU Jing-mei, ZHONG Mei, AISHA·nulahong. Effect of preparation methods on the catalytic performance of Ni-Al2O3 for CO2-CH4 reforming[J]. Journal of Fuel Chemistry and Technology, 2015, 43(09): 1083-1091.

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MO Wen-long, MA Feng-yun, LIU Yue-e, LIU Jing-mei, ZHONG Mei, AISHA·nulahong. Effect of preparation methods on the catalytic performance of Ni-Al₂O₃ for CO₂-CH₄ reforming[J]. Journal of Fuel Chemistry and Technology, 2015, 43(09): 1083-1091.

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Effect of preparation methods on the catalytic performance of Ni-Al₂O₃ for CO₂-CH₄ reforming

Key Laboratory of Coal Clean Conversion & Chemical Engineering Process(Xinjiang Uyghur Autonomous Region), College of Chemistry and Chemical Engineering, Xinjiang University, Urumqi 830046, China

Received Date: 2015-05-02
Rev Recd Date: 2015-07-11
Publish Date: 2015-09-30

Abstract

Abstract

To investigate the catalytic performance of nickel-based catalysts for carbon dioxide reforming of methane, four samples, SCM, IMP, T310 and HTP, with same contents of Ni were prepared by solution combustion method, incipient-wetness impregnation method, colloid mill circulating impregnation method and hydrothermal-precipitation method. The catalytic performance was tested at 800 ℃. The samples were characterized with ICP-AES, N₂ absorption-desorption method, XRD, H₂-TPR and TEM techniques. It was shown that the preparation methods had significant effects on the catalytic performance. The HTP and T310 samples had larger specific surface area, 190.83 m²/g and 182.21 m²/g respectively, which could provide more active sites and improve the activity (the initial conversion of CH₄ and CO₂ of HTP was up to 85.15% and 90.84%). The reduction peak area of NiAl₂O₄ of the catalysts prepared by solution combustion method and incipient-wetness impregnation method was higher than 90% of the total reduction area, indicating that these catalysts had more small Ni size particles and better stability after reduction (the conversion of CH₄ for SCM and IMP was higher than that of HTP and T310 after 50 h experiment, and was up to 50% after 100 h reaction). Hence, the mojor reason for improving the activity and stability of catalyst would be the size of Ni particles and its resistance to sintering.
- CH₄/CO₂ reforming,
- Ni-Al₂O₃ catalyst,
- preparation method,
- NiAl₂O₄ spinel

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References(20)

References

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