Effect of Pt addition to Ni/La0.7Sr0.3AlO 3-δ catalyst on steam reforming of toluene for hydrogen production

Daiki Mukai; Yuki Murai; Takuma Higo; Shuhei Ogo; Yukihiro Sugiura; Yasushi Sekine

doi:10.1016/j.apcata.2013.11.032

Effect of Pt addition to Ni/La_0.7Sr_0.3AlO _3-δ catalyst on steam reforming of toluene for hydrogen production

Daiki Mukai, Yuki Murai, Takuma Higo, Shuhei Ogo, Yukihiro Sugiura, Yasushi Sekine^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

23 Citations (Scopus)

Abstract

Pt/Ni/La_0.7Sr_0.3AlO_3-δ (Pt/Ni/LSAO) catalyst showed high catalytic activity and low coke formation for hydrogen production by steam reforming of toluene, even without pre-reduction. STEM-EDX and XAFS analyses revealed that Pt and Ni formed adjacent or alloy structure. Electron donation from supported Pt to Ni was observed by XPS observation, and the improvement of reducibility of Ni by Pt addition was observed by H ₂-TPR. Catalytic activity of the reduced Ni was brought by the PtNi interaction. The impregnation order of Pt and Ni affected the catalytic activity and the amount of coke formation due to the difference of the structure of supported metals. Dilution effects of Pt on Ni metal and the contact between Ni and LSAO support apparently affect the suppression of coke formation.

Original language	English
Pages (from-to)	157-164
Number of pages	8
Journal	Applied Catalysis A: General
Volume	471
DOIs	https://doi.org/10.1016/j.apcata.2013.11.032
Publication status	Published - 2014 Feb 10

Keywords

Alloy structure
Catalytic activity without pre-reduction
Electron donation
Low coke formation
Pt addition

ASJC Scopus subject areas

Catalysis
Process Chemistry and Technology

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1016/j.apcata.2013.11.032

Cite this

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title = "Effect of Pt addition to Ni/La0.7Sr0.3AlO 3-δ catalyst on steam reforming of toluene for hydrogen production",

abstract = "Pt/Ni/La0.7Sr0.3AlO3-δ (Pt/Ni/LSAO) catalyst showed high catalytic activity and low coke formation for hydrogen production by steam reforming of toluene, even without pre-reduction. STEM-EDX and XAFS analyses revealed that Pt and Ni formed adjacent or alloy structure. Electron donation from supported Pt to Ni was observed by XPS observation, and the improvement of reducibility of Ni by Pt addition was observed by H 2-TPR. Catalytic activity of the reduced Ni was brought by the PtNi interaction. The impregnation order of Pt and Ni affected the catalytic activity and the amount of coke formation due to the difference of the structure of supported metals. Dilution effects of Pt on Ni metal and the contact between Ni and LSAO support apparently affect the suppression of coke formation.",

keywords = "Alloy structure, Catalytic activity without pre-reduction, Electron donation, Low coke formation, Pt addition",

author = "Daiki Mukai and Yuki Murai and Takuma Higo and Shuhei Ogo and Yukihiro Sugiura and Yasushi Sekine",

year = "2014",

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doi = "10.1016/j.apcata.2013.11.032",

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T1 - Effect of Pt addition to Ni/La0.7Sr0.3AlO 3-δ catalyst on steam reforming of toluene for hydrogen production

AU - Mukai, Daiki

AU - Murai, Yuki

AU - Higo, Takuma

AU - Ogo, Shuhei

AU - Sugiura, Yukihiro

AU - Sekine, Yasushi

PY - 2014/2/10

Y1 - 2014/2/10

N2 - Pt/Ni/La0.7Sr0.3AlO3-δ (Pt/Ni/LSAO) catalyst showed high catalytic activity and low coke formation for hydrogen production by steam reforming of toluene, even without pre-reduction. STEM-EDX and XAFS analyses revealed that Pt and Ni formed adjacent or alloy structure. Electron donation from supported Pt to Ni was observed by XPS observation, and the improvement of reducibility of Ni by Pt addition was observed by H 2-TPR. Catalytic activity of the reduced Ni was brought by the PtNi interaction. The impregnation order of Pt and Ni affected the catalytic activity and the amount of coke formation due to the difference of the structure of supported metals. Dilution effects of Pt on Ni metal and the contact between Ni and LSAO support apparently affect the suppression of coke formation.

AB - Pt/Ni/La0.7Sr0.3AlO3-δ (Pt/Ni/LSAO) catalyst showed high catalytic activity and low coke formation for hydrogen production by steam reforming of toluene, even without pre-reduction. STEM-EDX and XAFS analyses revealed that Pt and Ni formed adjacent or alloy structure. Electron donation from supported Pt to Ni was observed by XPS observation, and the improvement of reducibility of Ni by Pt addition was observed by H 2-TPR. Catalytic activity of the reduced Ni was brought by the PtNi interaction. The impregnation order of Pt and Ni affected the catalytic activity and the amount of coke formation due to the difference of the structure of supported metals. Dilution effects of Pt on Ni metal and the contact between Ni and LSAO support apparently affect the suppression of coke formation.

KW - Alloy structure

KW - Catalytic activity without pre-reduction

KW - Electron donation

KW - Low coke formation

KW - Pt addition

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