Partial Oxidation of Methane to Synthesis Gas over (La,Sr)(Co,Ni) Oxide Catalysts.
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- HAYAKAWA Takashi
- Dept. of Surface Chemistry, National Institute of Materials and Chemical Research
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- HARIHARA Hideaki
- Dept. of Surface Chemistry, National Institute of Materials and Chemical Research
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- ANDERSEN Arnfinn G.
- Sect. for Hydrocarbon Process Chemistry
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- SUZUKI Kunio
- Dept. of Surface Chemistry, National Institute of Materials and Chemical Research
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- YASUDA Hiroyuki
- Dept. of Surface Chemistry, National Institute of Materials and Chemical Research
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- SHIMIZU Masao
- Dept. of Surface Chemistry, National Institute of Materials and Chemical Research
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- TAKEHIRA Katsuomi
- Dept. of Surface Chemistry, National Institute of Materials and Chemical Research
Bibliographic Information
- Other Title
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- (La, Sr)(Co, Ni) 酸化物触媒上のメタンの部分酸化による合成ガスの製造
- Partial Oxidation of Methane to Synthes
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Description
The catalytic properties of a series of (La, Sr)(Co, Ni) oxides have been studied for the oxidation of CH4. The catalysts were prepared by the citrate method. The catalytic test using a mixed gas of CH4 and air was carried out by temperature programmed reaction (TPR) from room temperature to 800°C.<br>All the catalysts prepared possessed perovskite oxide structure. The mode of the catalytic oxidation substantially changed around 700°C during the TPR. The oxide catalysts generally catalyzed combustion or oxidative dimerization of CH4 at temperatures below 700°C, while some of the oxides, La1-xSrxNiO3-δ(0≤x≤0.1) and La2-xSrxNiO4-δ(0.1≤x≤1.0), catalyzed synthesis gas production from CH4 at temperatures above 700°C. The latter two oxide catalysts decomposed to form La2O3 and Ni metal after the reaction at 800°C, and the Ni metal seemed to be active species for the synthesis gas formation. However, significant coke formation was observed over the catalysts, resulting in a blockage in the reactor in a short time.<br>LaCoO3-δ was stable and active for the CH4 combustion during the TPR, and showed a very low activity for synthesis gas production at 800°C, where Co metal was not observed. Partial substitution of Sr for La and of Ni for Co, respectively, in LaCoO<sub>3-δ</sub>, i.e., La0.8Sr0.2Co0.8Ni0.2 mixed oxide, resulted in a stable activity for synthesis gas production. The activity was enhanced by pretreating the catalyst, i.e., the reduction with CH4.
Journal
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- Journal of The Japan Petroleum Institute
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Journal of The Japan Petroleum Institute 39 (5), 314-321, 1996
The Japan Petroleum Institute
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Keywords
Details 詳細情報について
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- CRID
- 1390001206294412672
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- NII Article ID
- 10003817357
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- NII Book ID
- AN00130954
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- NDL BIB ID
- 4021153
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- ISSN
- 05824664
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- Text Lang
- en
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed