CO2 reforming of CH4 over Ni/SBA-15

Influence of Ni loading on the metal-support interaction and catalytic activity

H. D. Setiabudi, K. H. Lim, N. Ainirazali, S. Y. Chin, Kamarudin Nur Hidayatul Nazirah

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

The influence of Ni loading on the properties of Ni/SBA-15 and CO2 reforming of CH4 were studied. XRD, BET and TGA results indicated that the increasing Ni loading (3-10 wt%) decreased the crystallinity, surface area and physically adsorbed water content of the catalysts. FTIR, TEM and H2-TPR analysis confirmed the formation of Ni-O-Si by the substitution of surface silanol groups with Ni species and the maximum substitution of surface silanol groups with Ni were achieved at 5 wt%, while further increased in Ni loading stimulate the agglomeration of Ni particles. The activity of catalysts followed the order of 5Ni/SBA-15 > 3Ni/SBA-15 ≈ 10Ni/SBA-15 > SBA-15, with the conversion of CH4 and CO2 over 5Ni/SBA-15 was about 89% and 88% respectively, and CO2/CH4 ratio of 1.02. The superior catalytic performance of 5Ni/SBA-15 towards CO2 reforming of CH4 probably was related with the formation of metal-support interaction, Ni-O-Si, which enhanced the stabilization of the active Ni species on SBA-15 support and altered the properties of catalyst towards an excellent catalytic performance. The analysis of spent catalysts found that the presence of Ni-O-Si minimizes the growth of encapsulating graphite carbon and thus enhanced the stability of catalyst. This study provides new perspectives on the Ni-based catalyst, particularly on the influence of Ni on the metal-support interaction and catalytic performance of Ni/SBA-15 towards CO2 reforming of CH4.

Original languageEnglish
Pages (from-to)573-581
Number of pages9
JournalJournal of Materials and Environmental Science
Volume8
Issue number2
Publication statusPublished - 2017

Fingerprint

Reforming reactions
Catalyst supports
Catalyst activity
Metals
catalyst
Catalysts
metal
substitution
Substitution reactions
crystallinity
agglomeration
graphite
Water content
SBA-15
transmission electron microscopy
stabilization
Graphite
Agglomeration
Stabilization
surface area

Keywords

  • Catalyst stability
  • CH reforming
  • Metal-support interaction
  • Ni/SBA-15
  • Nickel loading

ASJC Scopus subject areas

  • Environmental Chemistry
  • Waste Management and Disposal
  • Pollution
  • Materials Chemistry

Cite this

CO2 reforming of CH4 over Ni/SBA-15 : Influence of Ni loading on the metal-support interaction and catalytic activity. / Setiabudi, H. D.; Lim, K. H.; Ainirazali, N.; Chin, S. Y.; Nur Hidayatul Nazirah, Kamarudin.

In: Journal of Materials and Environmental Science, Vol. 8, No. 2, 2017, p. 573-581.

Research output: Contribution to journalArticle

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AB - The influence of Ni loading on the properties of Ni/SBA-15 and CO2 reforming of CH4 were studied. XRD, BET and TGA results indicated that the increasing Ni loading (3-10 wt%) decreased the crystallinity, surface area and physically adsorbed water content of the catalysts. FTIR, TEM and H2-TPR analysis confirmed the formation of Ni-O-Si by the substitution of surface silanol groups with Ni species and the maximum substitution of surface silanol groups with Ni were achieved at 5 wt%, while further increased in Ni loading stimulate the agglomeration of Ni particles. The activity of catalysts followed the order of 5Ni/SBA-15 > 3Ni/SBA-15 ≈ 10Ni/SBA-15 > SBA-15, with the conversion of CH4 and CO2 over 5Ni/SBA-15 was about 89% and 88% respectively, and CO2/CH4 ratio of 1.02. The superior catalytic performance of 5Ni/SBA-15 towards CO2 reforming of CH4 probably was related with the formation of metal-support interaction, Ni-O-Si, which enhanced the stabilization of the active Ni species on SBA-15 support and altered the properties of catalyst towards an excellent catalytic performance. The analysis of spent catalysts found that the presence of Ni-O-Si minimizes the growth of encapsulating graphite carbon and thus enhanced the stability of catalyst. This study provides new perspectives on the Ni-based catalyst, particularly on the influence of Ni on the metal-support interaction and catalytic performance of Ni/SBA-15 towards CO2 reforming of CH4.

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