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中文摘要：
采用等体积浸渍法制备了不同助剂（Fe,Mg,Mn和Ce）修饰的镍-凹凸棒石粘土基催化剂（Ni/PG）,并用于催化裂解生物质气化焦油反应.采用X射线衍射和透射电子显微镜对Ni/PG催化剂进行了表征,并用总碳分析仪测定了催化剂上的积炭.结果表明,助剂的种类及其含量对催化剂性能的影响显著,在所选用的助剂中,Fe助剂入最有利于提高Ni/PG催化剂上焦油的去除率和H2的收率,且随助剂Fe含量的增加,催化剂活性逐渐提高.
英文摘要：
The palygorskite-supported nickel （Ni/PG） catalysts were modified by loading with several additives （Fe, Mg, Mn, and Ce） by incipient wetness impregnation. The effect of the additives and their content on the catalytic activity of Ni/PG and H2 yield in tar cracking was investigated. The catalysts were characterized by X-ray diffraction and transmission electron microscopy. The content of the additives affected the catalyst activity and the selectivity in tar cracking. Fe was the best species for promoting the performance of Ni/PG both in tar conversion and H2 yield. Increasing the Fe loading amount over the Ni/PG catalyst was favorable for tar removal.
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