Highly active and stable Co/La0.7Sr0.3AlO3-δ catalyst for steam reforming of toluene

被引：26

作者：

Takise, Kent ^{[1
]}

Higo, Takuma ^{[1
]}

Mukai, Daiki ^{[1
]}

Ogo, Shuhei ^{[1
]}

Sugiura, Yukihiro ^{[1
,2
]}

Sekine, Yasushi ^{[1
]}

机构：

[1] Waseda Univ, Dept Appl Chem, Shinjuku Ku, 3-4-1 Okubo, Tokyo 1698555, Japan

[2] JX Nippon Oil & Energy Corp, Cent Tech Res Lab, 8 Chidoricho, Yokohama, Kanagawa, Japan

来源：

CATALYSIS TODAY | 2016年 / 265卷

关键词：

Perovskite oxide; Steam reforming of toluene; Co catalyst; Hydrogen production; Surficial adsorption property; Stable catalytic activity; HYDROTALCITE-LIKE PRECURSORS; NI-BASED CATALYSTS; BIOMASS TAR; HYDROGEN-PRODUCTION; MODEL-COMPOUND; NICKEL-CATALYSTS; FE; CO; RH; ETHANOL;

D O I：

10.1016/j.cattod.2015.08.059

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

We investigated steam reforming of toluene as a model compound of aromatic hydrocarbons included in biomass tar over Co supported Co/La0.7Sr0.3AlO3-delta (LSAO), perovskite oxide. Ni-supported LSAO catalyst has shown high activity and coke resistance from the redox property of lattice oxygen in/on the LSAO support. Co is known as an active metal for this reaction, so Co/LSAO catalyst was investigated in this work. Co/LSAO catalyst, which showed high steady-state activity and stability, was characterized using (H2O)-O-18 isotopic transient response tests, STEM, FT-IR, Arrhenius plot and partial pressure dependence to elucidate high and stable catalytic activity. In situ FT-IR measurements revealed that reaction intermediates on Co/LSAO desorbed at 873 K or lower temperatures. Although redox property of lattice oxygen did not change at around 848 K based on isotopic transient tests, the Arrhenius plots indicate that the rate-determining step changed at around 848 K because of reaction intermediate decomposition desorption. Fast reaction and desorption of absorbed intermediates on Co/LSAO enable catalytic stability during toluene steam reforming. (C) 2015 Elsevier B.V. All rights reserved.

引用

页码：111 / 117

页数：7

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