摘要
研究了以焦炉煤气为原料在BaCo0.7Fe0.2Nb0.1O3-δ(BCFNO)透氧膜反应器中制合成气。实验结果表明,BCFNO膜反应器的自催化性能差。加入催化剂后,膜反应器的重整性能得到明显提高,在875℃,焦炉煤气中甲烷转化率为87.0%,产物中氢气和一氧化碳选择性分别为78.3%、105.6%,透氧量达到15.8ml/(cm2.min)。焦炉煤气中的甲烷在膜反应器中反应路径为首先焦炉煤气中的氢气与膜片透过去的氧反应生成水,然后甲烷再与水重整生成氢气和一氧化碳。实验过程中,透氧膜没有出现破裂,BCFNO透氧膜反应器在富氢的焦炉煤气下显示出很好的稳定性。
Syngas from coke oven gas was investigated in an oxygen-permeable membrane BaCo0.7Fe0.2Nb0.1O3-δ（BCFNO） reactor.It was found that the membrane itself has poor catalytic activity methane.After the catalyst was packed on the membrane surface,both methane conversion and oxygen permeation flux were greatly improved by the synergetic effect between the membrane and catalyst,at 875℃,87.0% of methane conversion,78.3% of H2 selectivity,105.6% of CO selectivity and as high as 15.8ml/（cm^2·min） of oxygen permeation flux were obtained.The react pathway of CH4 in the coke oven gas in the membrane reactor is as follows： firstly,H2 in the coke oven gas reacts with the O2,and generate H2O,then CH4 reforms with the H2O to produce H2 and CO.The membrane reactor exhibited not only good activity but also chemical stability resistance to hydrogen-enriched COG atmosphere.
出处
《功能材料》
EI
CAS
CSCD
北大核心
2010年第2期245-248,252,共5页
Journal of Functional Materials
基金
国家高科技研究发展计划(863计划)资助项目(2006AA11A189)
国家科技支撑计划资助项目(2006BA103A05)
上海市科学技术委员会重点资助项目(07DZ12036)
关键词
混合导体透氧膜
焦炉煤气
合成气
mixed-conducting oxygen-permeable membrane reactor
coke oven gas
syngas
