假设密置单层排布模型 ,在理论上探讨了高温、高压下低镍催化剂应用的可行性。并采用低比表面积工业α Al2 O3 载体 ,经CeO2 和MgO改性研制工业低镍HSD - 2催化剂。HSD - 2催化剂在 112 3K、1.0MPa下 ,与天然气、氧气、二氧化碳、水蒸气转化制合成气反应体系在n(naturalgas)∶n(CO2 )∶n(O2 )∶n(H2 O) =1∶0 .1∶0 .3∶1.3 ,空速为GHSV =1182 2h 1条件下连续反应 12 5h ,CH4 转化率始终保持在 90 %～ 94% ,H2 的选择性为 94%～ 96 %左右。较相同镍含量的Ni/α Al2 O3 催化剂活性高 ,稳定性和抗积炭性强 Assuming a close-packed single-layer arrangement model, the feasibility of application of low-nickel catalysts under high temperature and high pressure is theoretically discussed. Industrial low Al 2 O 3 carrier with low specific surface area was used to prepare industrial low - nickel HSD - 2 catalyst by CeO2 and MgO modification. HSD - 2 catalyst can react with natural gas, oxygen, carbon dioxide and steam at 1123K and 1.0MPa to produce syngas at n (natural gas): n (CO2): n (O2) : 0 .1: 0 .3: 1.3, the space velocity is GHSV = 1182 2h 1, the conversion of CH4 remains at 90% ~ 94% and the selectivity of H2 is about 94% ~ 96%. Compared with Ni / α Al 2 O 3 catalyst with the same nickel content, it has high activity, high stability and high carbon deposition resistance