煤层气在改性镍基催化剂上的CH_4三重整研究  

Study on tri-reforming of coal bed methane to syngas over modified nickel-based catalyst

作　　者：薛茹君[1] 万云云[1] 李丽[1] 朱峰[1] 

机构地区：[1]安徽理工大学化学工程学院,安徽淮南232001

出　　处：《天然气化工—C1化学与化工》2015年第5期38-40,52,共4页Natural Gas Chemical Industry

摘　　要：以铈掺杂的Zr O2-Al2O3复合氧化物为载体制备了Ni/Ce O2-Zr O2-Al2O3催化剂,考察了催化剂对煤层气的CH4三重整制合成气的稳定性及积炭性能。结果表明,w(Ni)为10%、n(Al)/n(Zr)为8、n(Ce)/n(Al)为0.015的Ni/Ce O2-Zr O2-Al2O3催化剂对CH4三重整制合成气反应有良好的活性和稳定性。体积组成为CH434.8%、CO224.8%、H2O 13.3%、O24.5%、N222.6%的原料气,在800℃、0.1MPa时,反应50h后,催化剂上的CH4转化率仍然>90%,CO2转化率>70%,催化剂的积炭量仅16%。A Ni/CeO2,-ZrO2-Al2O3 catalyst of Ni supported on Ce doped ZrO2-Al2O3 composite oxide was prepared, and its catalytic stability and anti-carbon deposit performance in tri-reforming of coal bed methane to syngas was investigated. Results showed that the catalyst with a Ni mass fraction of 10% and Al/Zr and Ce/Al atomic ratios of 8 and 0.015, respectively, exhibited good catalytic activity and stability. When using the mixed gas composed of CH4 34.8%, CO, 24.8%, H20 13.3%, 02 4.5% and N2 22.6% by volume as feed gas of the tri-reforming reaction, the conversions of CH4 and CO2 kept above 90% and 70%, respectively, for 50h at the reaction conditions of 800℃ and 0.1MPa, while the amount of carbon deposited on the catalyst was only 16% by mass after 50 h on stream.

关 键 词：煤层气 甲烷 三重整 合成气 Ni/CeO2-ZrO2-Al2O3催化剂 稳定性 

分 类 号：O643[理学—物理化学] TQ426[理学—化学]