摘要
文章采用共沉淀方法合成了不同配比的Ni O/Al2O3催化剂,采用固定床反应器研究了不同配比的催化剂对甘油水蒸气重整制氢的影响。通过气体产品含量、甘油及水蒸气转化率等指标的分析得出：甘油和水蒸气转化率及氢气产率在450~650℃时随温度升高而增加,其中Ni O/Al2O3（Ni O=27.43%,Al2O3=72.57%）催化剂由于Ni含量较高,表现出高制氢催化活性,其氢气产率在650℃时达到最高的12.7%,甘油转化率也达到最高值96.9%。进行CO2原位吸附的甘油重整吸附强化制氢时,得到了更高纯度的氢。进行多次循环再生实验时,随着循环次数的增多,由于吸附剂再生不完全,氢气纯度会随着循环次数增多有所下降。
H2 production from glycerol steam reforming by Ni O/Al2O3 catalysts synthesized with co-precipitation method with different Ni/Al ratios were evaluated experimentally in a fixed-bed reactor. The results showed that within 450~650 ℃, the glycerol conversion and H2 yield were increased with the increasing temperatures. Ni O/Al2O3catalyst（Ni O of 27.43%,Al2O3 of 72.57%） performed high catalytic activity,while its H2 concentration was found to be 12.7% and glycerol conversion was up to 96.9% at 650 ℃. For sorption-enhanced glycerol steam reforming, high purity H2 was obtained,and multi-cycles processes were proceeded. As the cycle number increased, the H2 purities were decreased mainly due to incomplete regeneration of the CO2 sorbent.
出处
《可再生能源》
CAS
北大核心
2014年第12期1856-1861,共6页
Renewable Energy Resources
基金
国家自然科学基金项目(51276032)
教育部新世纪优秀人才计划项目(NCET-10-0279)
关键词
甘油
制氢
水蒸气重整
镍基催化剂
吸附强化
glycerol
hydrogen production
steam reforming
Ni based catalyst
sorption enhance
