化工学报 ›› 2007, Vol. 58 ›› Issue (9): 2255-2258.

• 催化、动力学与反应器 • 上一篇    下一篇

Rh负载的整体型催化剂甲烷催化部分氧化过程

丁石,胡蓉蓉,阳宜洋,王德峥,程易   

  1. 清华大学化学工程系,北京市绿色反应工程与工艺重点实验室
  • 出版日期:2007-09-05 发布日期:2007-09-05

Catalytic partial oxidation of methane over rhodium coated foam monolith

DING Shi, HU Rongrong, Yang Yiyang, WANG Dezheng, CHENG Yi   

  • Online:2007-09-05 Published:2007-09-05

摘要: 采用负载Rh的泡沫独石整体型催化剂研究了甲烷催化部分氧化过程,考察了外界温度、空速和甲烷与氧气进料比例对反应转化率和选择性的影响,并对过程控制条件和调控参数进行了分析。研究结果表明该过程为毫秒级超短接触过程,反应可以在自热条件下进行,高空速条件下(8×105 h-1),甲烷与氧气进料比(体积比)为1.8,甲烷转过率超过90%,CO选择性接近95%,H2选择性超过90%。外界加热对过程有利,可获得更高的转化率和选择性。

关键词: 天然气转化, 催化部分氧化, 合成气, Rh催化剂, 泡沫独石

Abstract:

The catalytic partial oxidation of methane (CPOM) to syngas was studied on a rhodium coated foam monolith catalyst.The influences of reactor temperature, space velocity and methane/oxygen ratio were investigated and discussed.The reaction could be maintained auto-thermally after ignition.Under the conditions of high space velocity (8.0×105 h-1) and methane/oxygen ratio of 1.8, the methane conversion, hydrogen selectivity and carbon monoxide selectivity exceeded 90%, 90% and 95%, respectively.Heat supply to the reactor increased methane conversion and selectivity to hydrogen and carbon monoxide.

Key words: 天然气转化, 催化部分氧化, 合成气, Rh催化剂, 泡沫独石