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

• 材料工程专栏 • Previous Articles     Next Articles

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   

  1. 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

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   

  1. 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
  • 通讯作者: 汪学广

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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

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

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