Citation: ZHAN Ying-ying, KANG Liang, ZHOU Yu-chang, CAI Guo-hui, CHEN Chong-qi, JIANG Li-long. Pd/Al₂O₃ catalysts modified with Mg for catalytic combustion of methane: Effect of Mg/Al mole ratios on the supports and active PdO_x formation[J]. Journal of Fuel Chemistry and Technology, ;2019, 47(10): 1235-1244. shu

Pd/Al₂O₃ catalysts modified with Mg for catalytic combustion of methane: Effect of Mg/Al mole ratios on the supports and active PdO_x formation

National Engineering Research Center of Chemical Fertilizer Catalyst, Fuzhou University, Fuzhou 350002, China

Corresponding author: CHEN Chong-qi, chen0401357@163.com JIANG Li-long, jll@fzu.edu.cn
Received Date: 15 May 2019
Revised Date: 8 August 2019

Fund Project: Natural Science Foundation of Fujian Province 2016J01057The project was supported by the Natinal Nature Science Foundation of China (21878053) and Natural Science Foundation of Fujian Province (2016J01057)the Natinal Nature Science Foundation of China 21878053

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Pd/Al₂O₃ catalysts modified by different amount of magnesium were fabricated for catalytic combustion of methane (CCM). After the introduction of different amount of magnesium, Al₂O₃, MgAl₂O₄-like mixed oxide and Mg(Al)O_x solid solution were formed. Owing to the formation of distinguished supports, the supported Pd species, i.e. metallic Pd, PdO_x and support-Pd oxide complex were formed, and they were quite different in relative content and Pd↔PdO transformation ability. It was found that PdO_x was active at low temperature, while metallic Pd particles and support-Pd oxide complex were active at high reaction temperature. The one with Mg/Al mole ratio of 1:3 was the most easily in Pd↔PdO transformation, demonstrating the best catalytic activity towards CCM reaction.
- methane catalytic combustion,
- Pd-based catalyst,
- MgAl₂O₄,
- Mg(Al)O_x
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沈阳化工大学材料科学与工程学院沈阳 110142

Pd/Al2O3 catalysts modified with Mg for catalytic combustion of methane: Effect of Mg/Al mole ratios on the supports and active PdOx formation

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通讯作者: 陈斌, bchen63@163.com

Pd/Al₂O₃ catalysts modified with Mg for catalytic combustion of methane: Effect of Mg/Al mole ratios on the supports and active PdO_x formation