摘要
采用固定床微反应器装置,考察了添加稀土金属(La,Ce)和过渡金属(Zr,Cu)助剂及助剂添加量对甲烷自热重整制氢反应的影响.结果表明:添加稀土金属Ce和过渡金属Zr对Ni基催化剂反应性能有较大的提高;将Ce,Zr按不同的质量比添加到Ni基催化剂中,催化剂性能有很大的改变;Ni/Zr10Ce20A l70Oδ催化剂与Ni/Zr20A l80Oδ、Ni/Ce30A l70Oδ催化剂相比,氢气收率有一定的提高;在Ni/Zr10Ce20A l70Oδ中添加助剂Cu得到的Ni/Cu3Zr10Ce20A l67Oδ具有最好的催化性能,750℃时,CH4转化率达到100%,H2收率为72.9%,且H2的选择性达到100%.
The effects of some additives and their dosages on the autothermal reforming of methane to produce hydrogen were investigated using a fixed-bed mieroreaetor. The additives include rare earth metals such as La and Ce and transitional metals such as Zr and Cu. The results show that （ 1 ） the addition of Ce or Zr greatly improves the catalytic performance of Ni catalyst; （2） the catalytic performance of the catalyst promoted by both Ce and Zr in different mass ratio is obviously different from that of the catalyst promoted only by Ce or Zr; （3） as compared with Ni/Zr20Al80Oδ and Ni/Ce30Al70Oδ catalysts, Ni/Zr10Ce20Al70Oδ results in an improved H2 yield; and （4） when Cu is added in Ni/Zr10Ce20Al70Oδ, the new-formed catalyst Ni/Cu3Zr10Ce20Al67Oδ is of the best catalytic performance, with a CH4 conversion of 100% ,a H2 yield of 72.9% and a H2 selectivity of 100% at 750%.
出处
《华南理工大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2006年第12期68-71,共4页
Journal of South China University of Technology(Natural Science Edition)
基金
广东省自然科学基金资助项目(030514)
广东省科技计划项目(2004B33401006)
关键词
甲烷
自热重整
制氢
催化剂
稀土金属
过渡金属
methane
autothennal reforming
hydrogen production
catalyst
rare earth metal
transitional metal
