CAJ | 학술논문

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H_2的收率,且随助剂Fe含量的增加,催化剂活性逐渐提高.
채용등체적침지법제비료불동조제(Fe,Mg,Mn화Ce)수식적얼-요철봉석점토기최화제(Ni/PG),병용우최화렬해생물질기화초유반응.채용X사선연사화투사전자현미경대Ni/PG최화제진행료표정,병용총탄분석의측정료최화제상적적탄.결과표명,조제적충류급기함량대최화제성능적영향현저,재소선용적조제중,Fe조제입최유리우제고Ni/PG최화제상초유적거제솔화H_2적수솔,차수조제Fe함량적증가,최화제활성축점제고.
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 H_2 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 H_2 yield. Increasing the Fe loading amount over the Ni/PG catalyst was favorable for tar removal.