CH_4/CO_2转化制合成气(CO/H_2)Ni/Al_2O_3系列催化剂活性的研究

STUDY ON REACTION ACTIVITY OF Ni/Al_2O_3 CATALYSTS USED IN REFORMING REACTION FROM CH_4/CO_2 TO CO/H_2

本文在甲烷二氧化碳转化反应的Ni／Al_2O_3催化剂基础上，加入不同助剂，制备了用于上述反应的系列催化剂，在自装的多功能固定床流动化反应装置上评价了催化剂的催化活性，发现浸溃法是制备转化反应催化剂的较好方法．助剂的加入改善了催化剂中活性组分的分布，合成气收率和选择性都达到了理论平衡转化值．XRD结果证实了上述结论．

A series of catalysts named Ni/Al2O3 and modified by different promoters on the base of Ni/Al2O3, used in the reforming of methane with carbon dioxide to synthesis gas(CO/H2)are prepared. It is found that impregation method is the better one in preparing catalysts by evaluating the reaction activity on the fixed-bed flow self-control appratus. Both the conversion of CH4/CO2, and the yield of CO/H2 approach the caculated equilibrium value, and the XRD resultsof catalysts are given.