催化学报

催化学报 ›› 2013, Vol. 34 ›› Issue (1): 146-151.DOI: 10.1016/S1872-2067(11)60481-6

• 研究快讯 • 上一篇    下一篇

介孔 Co-Al2O3 催化剂上甲烷部分氧化制合成气

刘瑞艳, 杨美华, 黄传敬*, 翁维正, 万惠霖#   

  1. 厦门大学化学化工学院化学系, 固体表面物理化学国家重点实验室, 福建厦门 361005
  • 收稿日期:2012-09-25 修回日期:2012-11-08 出版日期:2013-01-23 发布日期:2013-01-23

Partial oxidation of methane to syngas over mesoporous Co-Al2O3 catalysts

LIU Ruiyan, YANG Meihua, HUANG Chuanjing *, WENG Weizheng, WAN Huilin #   

  1. State Key Laboratory for Physical Chemistry of Solid Surfaces, Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, Fujian, China
  • Received:2012-09-25 Revised:2012-11-08 Online:2013-01-23 Published:2013-01-23

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摘要： 采用一锅法制备了介孔 Co-Al2O3 催化剂, 并首次用于甲烷部分氧化制合成气反应. 结果表明, 与普通浸渍法相比, 一锅法制备的 Co-Al2O3 催化剂表现出更为优异的催化性能. 合成的介孔 Co-Al2O3 催化剂具有大的比表面积和孔体积, 以及规整有序的六方介孔孔道, Co 物种高度分散, 从而导致还原后高的金属分散度, 而介孔孔道对金属纳米颗粒的约束作用可有效增强金属的抗烧结能力.

关键词: 甲烷, 部分氧化, 合成气, 钴, 氧化铝, 介孔

Abstract: Mesoporous Co-Al2O3 catalysts were prepared by one-pot synthesis and, for the first time, used in the partial oxidation of methane to synthesis gas. Compared with the catalysts prepared by impregnation methods, the catalysts prepared by one-pot synthesis showed superior catalytic performance for this reaction. The results showed that mesoporous Co-Al2O3 catalysts have high surface areas, large pore volumes, and an ordered hexagonal mesostructure. In the catalysts, Co species are highly dispersed, resulting in high dispersion of the metal after reduction. A confinement effect, provided by the mesopores, on metal nanoparticles could effectively enhance resistance to metal sintering.

Key words: Methane, Partial oxidation, Syngas, Cobalt, Alumina, Mesopore