TiO_2-Al_2O_3催化剂的制备及其在甘油水蒸汽重整制合成气中的应用-学兔兔 www.xuetutu.com.pdf

2014年第22卷
合成化学
vol.22.2014
第1期,040~045
Chinese Joumal of Synthetic Chemistry
No.1,040~045
研究论文?
Ni/TiO2-Al203催化剂的制备
及其在甘油水蒸汽重整制合成气中的应用
彭东1,徐成华,封超,陈军2,肖恵文2
(1.西安向阳航天材料股份有限公司天华化工事业部,陕西西安71005;
2.成都信息工程学院资源环境学院,四川成都610225)
摘要:采用分步浸渍法制备了TO2修饰和金属离子(M=Ce2',La2,Mn2,Zx2',Ca2)掺杂的i基催化剂
Ca和 Catw,其结构和性能经XRD和H12-TPR表征。以甘油水蒸汽重整制合成气为探针反应,考察了T02
修饰量(ω),M,原料液配比rV(甘油):(水)]及时空速率(IHSV)对Catw催化甘油重整反应性能的影响。
结果表明:TYO2修饰可适当提高催化剂在甘油重整反应中的催化活性和合成气收率;Cat具有较佳的催化活
性(甘油转化率80%)。M的掺杂是通过降低F与载体之间的相互作用以实现催化剂活性的提高(Cat可使
甘油的转化率提高至94%以上);掺杂Ce和La可促进Cat在重整反应过程的水气变换反应,而Mn和Cd的
掺杂有利于合成气的生成。增加r和LHSV,可使甘油水蒸汽重整制合成气的收率得以提高,但不利于催化剂
的稳定性能。
关键词:甘油;水蒸汽重整;合成气;镍基催化剂;制备;催化活性
中图分类号:0643.36;0623.413
文献标识码:A
文章编号:1005-1511(2014)01-0040-06
Preparation of Ni/TIO-ALO, Catalyst and
Their Application in Glycerol Steam Refoming to Syngas
PENG Dong
XU Cheng-hua FENG Chao, CHEN Jun, XIAO Hui-wen
(1. Tianhua Chemical Engineering Depa ment, X an unward Aerospace Material Co. . Xi an 710025, China
2. College of Resources and Environment, Chengdu University of Information Tecnology, Chengdu 610225, China)
Abstract Ni/T 0 Al (Cat )and NM/Tio -1 O(Ca, M=Ce Ia ,Mn,Zr" or Cd)
catalysts were prepared by fractional impregnation. The structures were characterized by XRD and
H -TPR. Catalytic activities of the catalysts were investigated in preparation of syngas by steam refor
ming of glycerol. The effects of Tio amount( w ) introduced metal( M)types, liquid reactants com
position r[V(glycerol) V( water) and liquid hourly space velocity(LHSV) on reforming were in
restigated in detail. The results indicated that T O modification could improve the catalytic property
of Catw in glycerol reforming, and Cat exhibited a good catalytic activ with glycerol conversion of
80%. The introduction of other metal elements could weaken the strong metal-support interaction be
tween Ni and support, leading to improvement on catalytic activity of catalysts(glycerol conversion on
Cat ix reached up to 94%).The presence of Ce and La could promote water-gas shift du
unng retort-
收稿日期:2013-07-16;修订日期:2013-11-15
基金项目:四川省青年科技基金资助项目(20121Q047
作者简介:彭东(1967-),男,汉族,陕西西安人,主要从事催化剂的合成研究。
通僧联系人:徐成华,教授,E-mail!xch@cuit.edu,cn