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载体对Ni2P催化剂加氢脱氮反应性能的影响

鄢景森 ,  王海彦 ,  李素魁 ,  李晓惠

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引用本文: 鄢景森, 王海彦, 李素魁, 李晓惠. 载体对Ni2P催化剂加氢脱氮反应性能的影响[J]. 燃料化学学报, 2014, 42(3): 362-369. shu
Citation:  YAN Jing-sen, WANG Hai-yan, LI Su-kui, LI Xiao-hui. Effects of support on hydrodenitrogenation activity of nickel phosphide catalysts[J]. Journal of Fuel Chemistry and Technology, 2014, 42(3): 362-369. shu

载体对Ni2P催化剂加氢脱氮反应性能的影响

    通讯作者: 王海彦,男,教授,从事石油化工工艺及工业催化的研究,E-mail:fswhy@126.com
摘要: 使用TiO2、Al2O3以及TiO2-Al2O3复合载体考察了载体对磷化镍催化剂活性相和加氢脱氮性能的影响。不同钛铝原子比的TiO2-Al2O3复合载体采用原位-溶胶凝胶法制备,负载的磷化镍催化剂采用等体积浸渍法和H2原位还原法制备。以喹啉为模型化合物在固定床反应器上对催化剂的加氢脱氮性能进行评价,采用XRD、N2 吸附、TEM和H2-TPR等技术对催化剂和载体进行了表征。结果表明,制成的复合载体基本保留了最初引入的γ-Al2O3的孔特征,分散在γ-Al2O3表面的TiO2以锐钛矿晶型存在。不同载体对催化剂的H2还原行为有显著影响,所形成的活性物种也不相同。Al2O3中引入TiO2可以减弱P物种和Al2O3之间的相互作用,有利于Ni2P活性相的生成和催化活性的提高。当Ti/Al的原子比为1:8时,Ni2P/TiO2-Al2O3催化剂比Ni2P/TiO2、 Ni2P/Al2O3催化剂具有更高的加氢脱氮活性。

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  • 收稿日期:  2013-08-19
  • 网络出版日期:  2013-10-11
通讯作者: 陈斌, bchen63@163.com
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