Abstract:

The catalytic properties of the Ni-Rh/Al₂O₃ catalysts for the hydrogen-deuterium exchange of methane were tested with the fixed-bed micro-reactor.The results indicated that the conversion of methane increased by increasing reaction temperature when the temperature was less than 692K，the conversion of methane is not changed with increasing temperature when the temperature was higher than 692K under the same feed composition conditions.The conversion of methane was reduced with increasing the flow of reactants when the temperature was less than 692K，the conversion of methane did not change with increasing temperature when the temperature was higher than 692K under the same feed composition conditions.The conversion of methane was significantly reduced with increasing the flow rate of HD/CH₄ when the flow rate was 1.1—2.5.

Key words:

Ni-Rh/Al₂O₃催化剂, 甲烷, 氢氘交换

摘要：

采用Ni-Rh/Al₂O₃催化剂，在固定床微型反应器上考察了Ni-Rh/Al₂O₃催化剂对甲烷的氢氘交换的催化性能。结果表明，在进料组成不变的条件下，当温度低于692K时，甲烷的转化率随温度的升高而快速升高，当温度高于692K时，甲烷的转化率不随温度的升高而变化;当温度低于692K时，甲烷的转化率随反应物流量的增加而明显减小，当温度高于692K时，甲烷的转化率基本不随温度和反应物流量的变化而变化;在反应物总流量不变的条件下，当HD/CH₄流量比为1.1～2.5时，甲烷的转化率随着HD/CH₄流量比增加而减小。

关键词:

Ni-Rh/Al₂O₃催化剂, 甲烷, 氢氘交换