Influence of the Crystal Structure of Titanium Oxide on the Catalytic Activity of Rh/TiO2 in Steam Reforming of Propane at Low Temperature

Lin Yu, Katsutoshi Sato, Takaaki Toriyama, Tomokazu Yamamoto, Syo Matsumura, Katsutoshi Nagaoka

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Solid oxide fuel cells (SOFCs) with liquefied petroleum gas (LPG) reduce CO2 emissions due to their high-energy-conversion efficiency. Although SOFCs can convert LPG directly, coking occurs easily by decomposition of hydrocarbons, including C−C bonds on the electrode of fuel cell stacks. It is therefore necessary to develop an active steam pre-reforming catalyst that eliminates the hydrocarbons at low temperature, in which waste heat of SOFCs is used. Herein, we show that the crystal structure of the TiO2 that anchors Rh particles is crucial for catalytic activity of Rh/TiO2 catalysts for propane pre-reforming. Our experimental results revealed that strong metal support interaction (SMSI) induced during H2 pre-reduction were optimized over Rh/TiO2 with a rutile structure; this catalyst catalyzed the reaction much more effectively than conventional Rh/γ-Al2O3. In contrast, the SMSI was too strong for Rh/TiO2 with an anatase structure, and the surface of the Rh particles was therefore covered mostly with partially reduced TiO2. The result was very low activity.

Original languageEnglish
Pages (from-to)8742-8746
Number of pages5
JournalChemistry - A European Journal
Volume24
Issue number35
DOIs
Publication statusPublished - Jun 21 2018

Fingerprint

Propane
Titanium oxides
Steam reforming
Solid oxide fuel cells (SOFC)
Catalyst activity
Crystal structure
Liquefied petroleum gas
Reforming reactions
Hydrocarbons
Catalysts
Metals
Waste heat
Coking
Steam
Anchors
Energy conversion
Titanium dioxide
Temperature
Conversion efficiency
Fuel cells

All Science Journal Classification (ASJC) codes

  • Catalysis
  • Organic Chemistry

Cite this

Influence of the Crystal Structure of Titanium Oxide on the Catalytic Activity of Rh/TiO2 in Steam Reforming of Propane at Low Temperature. / Yu, Lin; Sato, Katsutoshi; Toriyama, Takaaki; Yamamoto, Tomokazu; Matsumura, Syo; Nagaoka, Katsutoshi.

In: Chemistry - A European Journal, Vol. 24, No. 35, 21.06.2018, p. 8742-8746.

Research output: Contribution to journalArticle

Yu, Lin ; Sato, Katsutoshi ; Toriyama, Takaaki ; Yamamoto, Tomokazu ; Matsumura, Syo ; Nagaoka, Katsutoshi. / Influence of the Crystal Structure of Titanium Oxide on the Catalytic Activity of Rh/TiO2 in Steam Reforming of Propane at Low Temperature. In: Chemistry - A European Journal. 2018 ; Vol. 24, No. 35. pp. 8742-8746.
@article{3bde7146e81041d2be954711e79f6481,
title = "Influence of the Crystal Structure of Titanium Oxide on the Catalytic Activity of Rh/TiO2 in Steam Reforming of Propane at Low Temperature",
abstract = "Solid oxide fuel cells (SOFCs) with liquefied petroleum gas (LPG) reduce CO2 emissions due to their high-energy-conversion efficiency. Although SOFCs can convert LPG directly, coking occurs easily by decomposition of hydrocarbons, including C−C bonds on the electrode of fuel cell stacks. It is therefore necessary to develop an active steam pre-reforming catalyst that eliminates the hydrocarbons at low temperature, in which waste heat of SOFCs is used. Herein, we show that the crystal structure of the TiO2 that anchors Rh particles is crucial for catalytic activity of Rh/TiO2 catalysts for propane pre-reforming. Our experimental results revealed that strong metal support interaction (SMSI) induced during H2 pre-reduction were optimized over Rh/TiO2 with a rutile structure; this catalyst catalyzed the reaction much more effectively than conventional Rh/γ-Al2O3. In contrast, the SMSI was too strong for Rh/TiO2 with an anatase structure, and the surface of the Rh particles was therefore covered mostly with partially reduced TiO2. The result was very low activity.",
author = "Lin Yu and Katsutoshi Sato and Takaaki Toriyama and Tomokazu Yamamoto and Syo Matsumura and Katsutoshi Nagaoka",
year = "2018",
month = "6",
day = "21",
doi = "10.1002/chem.201800936",
language = "English",
volume = "24",
pages = "8742--8746",
journal = "Chemistry - A European Journal",
issn = "0947-6539",
publisher = "Wiley-VCH Verlag",
number = "35",

}

TY - JOUR

T1 - Influence of the Crystal Structure of Titanium Oxide on the Catalytic Activity of Rh/TiO2 in Steam Reforming of Propane at Low Temperature

AU - Yu, Lin

AU - Sato, Katsutoshi

AU - Toriyama, Takaaki

AU - Yamamoto, Tomokazu

AU - Matsumura, Syo

AU - Nagaoka, Katsutoshi

PY - 2018/6/21

Y1 - 2018/6/21

N2 - Solid oxide fuel cells (SOFCs) with liquefied petroleum gas (LPG) reduce CO2 emissions due to their high-energy-conversion efficiency. Although SOFCs can convert LPG directly, coking occurs easily by decomposition of hydrocarbons, including C−C bonds on the electrode of fuel cell stacks. It is therefore necessary to develop an active steam pre-reforming catalyst that eliminates the hydrocarbons at low temperature, in which waste heat of SOFCs is used. Herein, we show that the crystal structure of the TiO2 that anchors Rh particles is crucial for catalytic activity of Rh/TiO2 catalysts for propane pre-reforming. Our experimental results revealed that strong metal support interaction (SMSI) induced during H2 pre-reduction were optimized over Rh/TiO2 with a rutile structure; this catalyst catalyzed the reaction much more effectively than conventional Rh/γ-Al2O3. In contrast, the SMSI was too strong for Rh/TiO2 with an anatase structure, and the surface of the Rh particles was therefore covered mostly with partially reduced TiO2. The result was very low activity.

AB - Solid oxide fuel cells (SOFCs) with liquefied petroleum gas (LPG) reduce CO2 emissions due to their high-energy-conversion efficiency. Although SOFCs can convert LPG directly, coking occurs easily by decomposition of hydrocarbons, including C−C bonds on the electrode of fuel cell stacks. It is therefore necessary to develop an active steam pre-reforming catalyst that eliminates the hydrocarbons at low temperature, in which waste heat of SOFCs is used. Herein, we show that the crystal structure of the TiO2 that anchors Rh particles is crucial for catalytic activity of Rh/TiO2 catalysts for propane pre-reforming. Our experimental results revealed that strong metal support interaction (SMSI) induced during H2 pre-reduction were optimized over Rh/TiO2 with a rutile structure; this catalyst catalyzed the reaction much more effectively than conventional Rh/γ-Al2O3. In contrast, the SMSI was too strong for Rh/TiO2 with an anatase structure, and the surface of the Rh particles was therefore covered mostly with partially reduced TiO2. The result was very low activity.

UR - http://www.scopus.com/inward/record.url?scp=85047462404&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85047462404&partnerID=8YFLogxK

U2 - 10.1002/chem.201800936

DO - 10.1002/chem.201800936

M3 - Article

VL - 24

SP - 8742

EP - 8746

JO - Chemistry - A European Journal

JF - Chemistry - A European Journal

SN - 0947-6539

IS - 35

ER -