摘要
甲烷二氧化碳重整制合成气的镍基催化剂性能Ⅰ．制备条件和载镍量的影响许峥李玉敏张继炎张鎏（天津大学化工系，天津３０００７２）韩森何菲（天津大学碳一化工国家重点实验室，天津３０００７２）关键词甲烷，二氧化碳，重整，镍，氧化铝，负载型催化剂甲烷二氧化碳重整...
The reaction activity for reforming of CH 4 with CO 2 over supported Ni catalyst was investigated in a fixed bed reactor at 600～900℃. It was found that the initial activity depended essentially on Ni state which was related to its interaction with the support. In preparation process, the conditions, such as calcining temperature and Ni loading, had a great effect on the interaction, and the formation of NiAl 2O 4 spinel decreased the activity at lower reaction temperature but enhanced CO 2 conversion at higher reaction temperature. The heated or calcined support would increase the surface area of the catalyst, but have a little effect on its activity. Under the given conditions, the state and distribution of Ni phase would be related to Ni loading. The interaction between Ni and Al 2O 3 would be dominant for the catalyst with lower Ni loading. So it would lead to a maximum value of activity at lower reaction temperature, and lead to less carbon deposition.
出处
《催化学报》
SCIE
CAS
CSCD
北大核心
1997年第5期410-413,共4页
关键词
甲烷
二氧化碳
重整
合成气
镍催化剂
负载型
Methane, Carbon dioxide, Reforming, Nickel, Alumina, Supported catalyst
