H2 Production from Reforming Biogas (CH4+CO2) in the Ni-doped Sr0.92Y0.08TiO3 Perovskite Catalyst

Byeong Wan Kwon, Ghun Sik Kim, Joo Hyeng Oh, Seong Cheol Jang, Sung Pil Yoon, Jonghee Han, SukWoo Nam, Hyung Chul Ham

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

This study deals with the development of novel Sr0.92Y0.08TiO3 - based catalyst for H2 production from reforming biogas (consisted of CH4 and CO2). The small amount of Ni was doped on the Ti lattice site of Sr0.92Y0.08TiO3 to greatly improve catalytic activity. The Ni-doped Sr0.92Y0.08TiO3 catalyst was prepared at reduced temperature via a Pechini method. First, we see the significant enhanced H2 production of Ni-doped Sr0.92Y0.08TiO3 catalyst (CH4 conversion =62∼76% at 750oC) compared to the pure Sr0.92Y0.08TiO3 catalyst (CH4 conversion =15%). Second, the analysis of surface property at reaction conditions displays that the catalytic activity of Ni-doped Sr0.92Y0.08TiO3 toward the reforming of biogas strongly depends on the activation condition (or pretreatment condition) of catalysts. In particular, the activation of catalyst at 100 mol% N2 (inert condition) shows the higher reactivity (CH4 conversion of 76%) for reforming biogas than the 15 mol%H2 in N2 (reducing condition) (a CH4 conversion of 62%). We also conducted the density functional theory calculation in order to better understand the origin of enhanced catalysis in H2 production from reforming biogas, which suggests that the reduction of oxygen vacancy formation energy is key to the improvement of catalytic activity.

Original languageEnglish
Pages (from-to)1942-1947
Number of pages6
JournalEnergy Procedia
Volume105
DOIs
Publication statusPublished - 2017
Externally publishedYes

Fingerprint

Biogas
Reforming reactions
Perovskite
Catalysts
Catalyst activity
Chemical activation
Oxygen vacancies
Catalysis
Surface properties
Density functional theory

Keywords

  • and Ni-doped SrY.TiO perovskite catalyst
  • Biogas
  • dry reforming
  • Pechini method

ASJC Scopus subject areas

  • Energy(all)

Cite this

H2 Production from Reforming Biogas (CH4+CO2) in the Ni-doped Sr0.92Y0.08TiO3 Perovskite Catalyst. / Kwon, Byeong Wan; Kim, Ghun Sik; Oh, Joo Hyeng; Jang, Seong Cheol; Yoon, Sung Pil; Han, Jonghee; Nam, SukWoo; Ham, Hyung Chul.

In: Energy Procedia, Vol. 105, 2017, p. 1942-1947.

Research output: Contribution to journalArticle

Kwon, Byeong Wan ; Kim, Ghun Sik ; Oh, Joo Hyeng ; Jang, Seong Cheol ; Yoon, Sung Pil ; Han, Jonghee ; Nam, SukWoo ; Ham, Hyung Chul. / H2 Production from Reforming Biogas (CH4+CO2) in the Ni-doped Sr0.92Y0.08TiO3 Perovskite Catalyst. In: Energy Procedia. 2017 ; Vol. 105. pp. 1942-1947.
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abstract = "This study deals with the development of novel Sr0.92Y0.08TiO3 - based catalyst for H2 production from reforming biogas (consisted of CH4 and CO2). The small amount of Ni was doped on the Ti lattice site of Sr0.92Y0.08TiO3 to greatly improve catalytic activity. The Ni-doped Sr0.92Y0.08TiO3 catalyst was prepared at reduced temperature via a Pechini method. First, we see the significant enhanced H2 production of Ni-doped Sr0.92Y0.08TiO3 catalyst (CH4 conversion =62∼76{\%} at 750oC) compared to the pure Sr0.92Y0.08TiO3 catalyst (CH4 conversion =15{\%}). Second, the analysis of surface property at reaction conditions displays that the catalytic activity of Ni-doped Sr0.92Y0.08TiO3 toward the reforming of biogas strongly depends on the activation condition (or pretreatment condition) of catalysts. In particular, the activation of catalyst at 100 mol{\%} N2 (inert condition) shows the higher reactivity (CH4 conversion of 76{\%}) for reforming biogas than the 15 mol{\%}H2 in N2 (reducing condition) (a CH4 conversion of 62{\%}). We also conducted the density functional theory calculation in order to better understand the origin of enhanced catalysis in H2 production from reforming biogas, which suggests that the reduction of oxygen vacancy formation energy is key to the improvement of catalytic activity.",
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AU - Oh, Joo Hyeng

AU - Jang, Seong Cheol

AU - Yoon, Sung Pil

AU - Han, Jonghee

AU - Nam, SukWoo

AU - Ham, Hyung Chul

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AB - This study deals with the development of novel Sr0.92Y0.08TiO3 - based catalyst for H2 production from reforming biogas (consisted of CH4 and CO2). The small amount of Ni was doped on the Ti lattice site of Sr0.92Y0.08TiO3 to greatly improve catalytic activity. The Ni-doped Sr0.92Y0.08TiO3 catalyst was prepared at reduced temperature via a Pechini method. First, we see the significant enhanced H2 production of Ni-doped Sr0.92Y0.08TiO3 catalyst (CH4 conversion =62∼76% at 750oC) compared to the pure Sr0.92Y0.08TiO3 catalyst (CH4 conversion =15%). Second, the analysis of surface property at reaction conditions displays that the catalytic activity of Ni-doped Sr0.92Y0.08TiO3 toward the reforming of biogas strongly depends on the activation condition (or pretreatment condition) of catalysts. In particular, the activation of catalyst at 100 mol% N2 (inert condition) shows the higher reactivity (CH4 conversion of 76%) for reforming biogas than the 15 mol%H2 in N2 (reducing condition) (a CH4 conversion of 62%). We also conducted the density functional theory calculation in order to better understand the origin of enhanced catalysis in H2 production from reforming biogas, which suggests that the reduction of oxygen vacancy formation energy is key to the improvement of catalytic activity.

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