摘要
研究了常压下铁钴双金属催化剂上二氧化碳催化加氢合成低碳烯烃的反应，考察了钴含量、反应温度对二氧化碳转化率、产物选择性的影响。结果表明，钴的添加有利于铁的碳化，提高了二氧化碳转化率，降低了一氧化碳选择性，提高了甲烷选择性，适量钴的添加促进了二氧化碳向烃的转化。在铁钴摩尔比６７∶３３，反应温度３５０℃，反应空速５０００ｍｌｇ－１ｈ－１条件下，二氧化碳转化率达到２８１％，Ｃ＋２选择性达到１１６％。
Fe-Co bimetallic catalysts were used for hydrogenation of carbon dioxide The effects of Co content and reaction temperature were studied With the increase of content of Co in the catalyst, the carbon dioxide conversion and methane selectivity increased, while the carbon monoxide selectivity decreased Proper quantity of Co can improve the carbonization of iron as well as the conversion of carbon dioxide to C+2 hydrocarbons The Fe-Co (molar ratio 6733) bimetallic catalyst affords C+2 hydrocarbons consisting mainly of C2H4 and C3H6 with selectivity of 116% at SV of 5000mlg-1h-1 and 350, showing the carbon dioxide conversion of 281% and the ratio of olefins to paraffin of 54
出处
《燃料化学学报》
EI
CAS
CSCD
北大核心
1999年第2期145-149,共5页
Journal of Fuel Chemistry and Technology
基金
天津大学一碳化工国家重点实验室开放基金
关键词
铁
钴
二氧化碳
加氢
低碳烯烃
催化剂
烯烃
Fe-Co alloy, carbon dioxide, hydrogenation, light olefins
