Studies of Nickel/Samarium-Doped Ceria for Catalytic Partial Oxidation of Methane and Effect of Oxygen Vacancy

被引：12

作者：

Chien, Andrew C. ^{[1
,2
]}

Ye, Nicole J. ^{[1
]}

Huang, Chao-Wei ^{[3
]}

Tseng, I-Hsiang ^{[1
]}

机构：

[1] Feng Chia Univ, Dept Chem Engn, Taichung 40724, Taiwan

[2] Feng Chia Univ, Green Energy Dev Ctr, Taichung 40724, Taiwan

[3] Natl Kaohsiung Univ Sci & Technol, Dept Chem & Mat Engn, Kaohsiung 80778, Taiwan

来源：

CATALYSTS | 2021年 / 11卷 / 06期

关键词：

Ni; SDC; microwave; syngas; metal-support; partial oxidation of methane; fuel cell; OXIDE FUEL-CELLS; STRUCTURAL-PROPERTIES; NATURAL-GAS; ANODE; SUPPORT; SYNGAS; CARBON; CEO2;

D O I：

10.3390/catal11060731

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

We investigated the performance of nickel/samarium-doped ceria (Ni/SDC) nanocatalysts on the catalytic partial oxidation of methane (CPOM). Studies of temperature-programmed surface reaction and reduction reveal that catalytic activity is determined by a synergistic effect produced by Ni metals and metal-support interaction. Catalytic activity was more dependent on the Ni content below 600 degrees C, while there is not much difference for all catalysts at high temperatures. The catalyst exhibiting high activities toward syngas production (i.e., a CH4 conversion >90% at 700 degrees C) requires a medium Ni-SDC interaction with an Sm/Ce ratio of about 1/9 to 2/8. This is accounted for by optimum oxygen vacancies and adequate ion diffusivity in the SDCs which, as reported, also display the highest ion conductivity for fuel cell applications.

引用

页数：12

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