Li掺杂对LaNi/Al2O3在焦油重整中催化性能的影响

›› 2009, Vol. 9 ›› Issue (2): 403-407.

Li掺杂对LaNi/Al2O3在焦油重整中催化性能的影响

孔令华岳宝华汪学广于飞鲁雄刚丁伟中丁伟中

上海大学纳米科学与技术研究中心上海大学化学系上海大学上海市现代冶金与材料制备重点实验室上海大学上海市现代冶金与材料制备重点实验室上海大学材料科学与工程学院上海大学上海市现代冶金与材料制备重点实验室

收稿日期:2008-11-14 修回日期:2009-01-09 出版日期:2009-04-20 发布日期:2009-04-20
通讯作者: 汪学广

Effect of Li Doping on Catalytic Performance of LaNi/Al2O3 in Tar Reforming

KONG Ling-hua YUE Bao-hua WANG Xue-guang YU Fei ZHEN Qiang LU Xiong-gang DING Wei-zhong

Nano-Science and Technology Research Centre of Shanghai University Department of Chemistry, Shanghai University Shanghai Key Laboratory of Modern Metallurgy and Materials Processing Shanghai Key Laboratory of Modern Metallurgy and Materials Processing School of Materials Science and Engineering, Shanghai University Shanghai Key Laboratory of Modern Metallurgy and Materials Processing

Received:2008-11-14 Revised:2009-01-09 Online:2009-04-20 Published:2009-04-20
Contact: WANG Xue-guang

摘要/Abstract

摘要： 采用浸渍法制备了LiLaNi/Al2O3催化剂，并用XRD, SEM, TPR等对其进行了表征. Li的加入对催化剂的结构、NiAl2O4的结晶度及Ni2+离子还原能力都有较大影响. 以甲苯为焦油的模型化合物，在固定床反应器中对高温焦炉煤气中焦油催化转化反应进行了评价. 结果显示，Li能显著改善LaNi/Al2O3催化剂的催化反应活性，提高产物中H2的含量. 在750℃、水/碳比为2.0的条件下，含0.5%(w) Li的LiLaNi/Al2O3催化剂能将甲苯完全转化为小分子气体，产物中H2含量显著增加.

关键词: LiLaNi/Al2O3, 催化重整, 焦油, 甲苯, 焦炉煤气

Abstract: The catalytic activity of LiLaNi/Al2O3 was evaluated in a fixed-bed reactor via steam reforming of toluene as a model tar compound. The results showed that addition of Li could improve the catalytic activity of LiLaNi/Al2O3 and enhance H2 content in the resultant gas mixture. XRD, SEM and TPR results illustrated that the addition of Li had great influence on the structure of LiLaNi/Al2O3 catalysts and the reduction ability of Ni2+ ions. The catalyst 0.5LiLaNi/Al2O3 possessed the optimal catalytic performance. LiLaNi/Al2O3 also showed good resistance to coking for steam reforming of tar at a high temperature of 750℃.

Key words: LiLaNi/Al2O3, catalytic reforming, tar, toluene, coke oven gas

中图分类号:

O643

孔令华岳宝华汪学广于飞鲁雄刚丁伟中丁伟中. Li掺杂对LaNi/Al2O3在焦油重整中催化性能的影响[J]. , 2009, 9(2): 403-407.

KONG Ling-hua YUE Bao-hua WANG Xue-guang YU Fei ZHEN Qiang LU Xiong-gang DING Wei-zhong. Effect of Li Doping on Catalytic Performance of LaNi/Al2O3 in Tar Reforming[J]. , 2009, 9(2): 403-407.

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