中文摘要：

制备了负载于大孔容、高比表面的γ-Al2O3载体上的Ni基催化剂．采用固定床流动反应装置，考察了催化剂焙烧温度、反应条件（反应温度、压力、空速以及反应原料气组成）对甲烷三重整反应（TRM）制合成气的催化性能的影响．结果表明，650℃焙烧的催化剂具有较好的稳定性．在常压、850℃、10080h^-1、n（CH4）／n（CO2）／n（H2O）／n（O2）=1／0．48／0．54／0．1的条件下，CH4转化率达到95．4％，CO2转化率达到84．6％，在此条件下连续运行9h未见活性下降．TRM反应适宜于在高温、低压下进行，原料组成的变化不会影响CH4转化率，但会影响CO2转化率和产物合成气的n（H2）／n（Co）比．

英文摘要：

Ni was dispersed on γ-Al2O3 with large pore volume and high specific surface area by using wet impregnation method. The catalytic performances of Ni/Al2O3 in tri-reforming of methane to syngas （TRM） under different reaction conditions such as temperature, pressure and space velocity, and the feedstock composition were studied in a fix-bed reactor. The effect of calcination temperature on stability of catalysts was also investigated. The results showed that catalyst calcined at 650 ℃ exhibited higher stability than catalysts calcined at other temperatures. 95.4% of CH4 conversion and 84.6% of CO2 conversion were achieved at 850℃ under atmospheric pressure and with feed composition of n（ CH4 ）/n （ CO2 ）/n （ H2 O）/n （ 02 ） = 1/0.48/0.54/0.1 and space velocity of 10 080 h^-1. High temperature and low pressure are favorable to TRM reaction. Feed compositions affect only on CO2 conversion and n（H2）/n（CO） ratio of syngas, whereas not on CH4 conversion.