CH_(4-)CO_2反应的催化反应动力学研究——反应级数的确定

STUDY ON CATALYTIC KINETICS OF REFORMING REACTION OF CH_(4-)CO_2——Determination of reaction order

采用 Ni/α-Al2 O3和工业 HSD-2型催化剂对甲烷—二氧化碳重整反应进行了动力学研究 ,结果表明反应中 CO的速率方程为 :RCO=k PCH4PCO2( CO2 的分压范围 :1 2 .5～ 3 0 k Pa;温度范围 :1 1 2 3～ 1 1 73 K)和 RCO=k PCH4( CO2的分压范围 :3 0～ 45k Pa;温度范围 :1 1 2 3～ 1 1 73 K) 。

The catalytic kinetics of reforming reaction of methane with carbon dioxide to produce synthesis gas by means of Ni/α-Al 2O 3 and HSD-2 catalysts is studied.The results indicate that the reaction orders are one and zero for methane and carbon dioxide,respectively,while carbon dioxide partial pressure is about 12.5～30.0kPa and temperature is at 1123～1173K. However,when the carbon dioxide partial pressure is changed to 30.0～45.0kPa,and temperature is 1123～1173K,the reaction orders of methane and carbon diocide are one.Furthermore,average rate constants at different temperatures are determined.\;