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Comparative study on the promotion effect of Mn and Zr on the stability of Ni/SiO2 catalyst for CO2 reforming of methane

The stability of Mn-promoted Ni/SiO catalyst for methane CO reforming was investigated comparatively to that of Zr-promoted Ni/SiO . The catalysts were prepared by the same impregnation method with the same controlled promoter contents and characterized by TPR, XRD, TG, SEM, XPS and Raman techniques... Full description

Journal Title: International Journal of Hydrogen Energy 18 June 2013, Vol.38(18), pp.7268-7279
Main Author: Yao, Lu
Other Authors: Zhu, Jianqiang , Peng, Xiaoxi , Tong, Dongmei , Hu, Changwei
Format: Electronic Article Electronic Article
Language: English
Subjects:
ID: ISSN: 0360-3199 ; E-ISSN: 1879-3487 ; DOI: 10.1016/j.ijhydene.2013.02.126
Link: https://www.sciencedirect.com/science/article/pii/S0360319913005600
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recordid: elsevier_sdoi_10_1016_j_ijhydene_2013_02_126
title: Comparative study on the promotion effect of Mn and Zr on the stability of Ni/SiO2 catalyst for CO2 reforming of methane
format: Article
creator:
  • Yao, Lu
  • Zhu, Jianqiang
  • Peng, Xiaoxi
  • Tong, Dongmei
  • Hu, Changwei
subjects:
  • Methane
  • Reforming
  • Stability
  • Ni–Mn/Sio2
  • Ni–Zr/Sio2
  • Engineering
ispartof: International Journal of Hydrogen Energy, 18 June 2013, Vol.38(18), pp.7268-7279
description: The stability of Mn-promoted Ni/SiO catalyst for methane CO reforming was investigated comparatively to that of Zr-promoted Ni/SiO . The catalysts were prepared by the same impregnation method with the same controlled promoter contents and characterized by TPR, XRD, TG, SEM, XPS and Raman techniques. The addition of Mn to Ni/SiO catalyst promoted the dispersion of Ni species, leading to smaller particle size of NiO on the fresh Ni–Mn/SiO catalyst and the formation of NiMn O , which enhanced the interaction of the modified support with Ni species. Thus, the Ni–Mn/SiO catalyst showed higher activity and better ability of restraining carbon deposition than Ni/SiO catalyst. Besides, it exhibited stable activity at reaction temperatures over the range from 600 °C to 800 °C. However, the introduction of Zr increased the reducibility of Ni–Zr/SiO , and the catalyst deactivated much more dramatically when the reaction temperature decreased due to its poor ability of restraining carbon deposition, and its activity decreased monotonically with time on stream at 800 °C. Introduction of Mn to Ni/SiO leads to higher metal dispersion, stronger metal-support interaction, and great ability of restraining carbon deposition, keeping the Ni–Mn/SiO catalyst stable. ► Ni–Mn/SiO catalyst exhibited good stability for CH reforming of CO . ► The addition of Mn decreased the reducibility of Ni–Mn/SiO . ► Ni–Mn/SiO catalyst exhibited high ability of restraining carbon deposition. ► The activity of Ni–Zr/SiO catalyst decreased monotonically with time on stream. ► A large mounts of carbon deposited on Ni–Zr/SiO catalyst.
language: eng
source:
identifier: ISSN: 0360-3199 ; E-ISSN: 1879-3487 ; DOI: 10.1016/j.ijhydene.2013.02.126
fulltext: no_fulltext
issn:
  • 0360-3199
  • 03603199
  • 1879-3487
  • 18793487
url: Link


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titleComparative study on the promotion effect of Mn and Zr on the stability of Ni/SiO2 catalyst for CO2 reforming of methane
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subjectMethane ; Reforming ; Stability ; Ni–Mn/Sio2 ; Ni–Zr/Sio2 ; Engineering
descriptionThe stability of Mn-promoted Ni/SiO catalyst for methane CO reforming was investigated comparatively to that of Zr-promoted Ni/SiO . The catalysts were prepared by the same impregnation method with the same controlled promoter contents and characterized by TPR, XRD, TG, SEM, XPS and Raman techniques. The addition of Mn to Ni/SiO catalyst promoted the dispersion of Ni species, leading to smaller particle size of NiO on the fresh Ni–Mn/SiO catalyst and the formation of NiMn O , which enhanced the interaction of the modified support with Ni species. Thus, the Ni–Mn/SiO catalyst showed higher activity and better ability of restraining carbon deposition than Ni/SiO catalyst. Besides, it exhibited stable activity at reaction temperatures over the range from 600 °C to 800 °C. However, the introduction of Zr increased the reducibility of Ni–Zr/SiO , and the catalyst deactivated much more dramatically when the reaction temperature decreased due to its poor ability of restraining carbon deposition, and its activity decreased monotonically with time on stream at 800 °C. Introduction of Mn to Ni/SiO leads to higher metal dispersion, stronger metal-support interaction, and great ability of restraining carbon deposition, keeping the Ni–Mn/SiO catalyst stable. ► Ni–Mn/SiO catalyst exhibited good stability for CH reforming of CO . ► The addition of Mn decreased the reducibility of Ni–Mn/SiO . ► Ni–Mn/SiO catalyst exhibited high ability of restraining carbon deposition. ► The activity of Ni–Zr/SiO catalyst decreased monotonically with time on stream. ► A large mounts of carbon deposited on Ni–Zr/SiO catalyst.
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