A highly dispersed nickel supported catalyst for dry reforming of methane
A highly dispersed nickel supported catalyst for dry reforming of methane
复制标题
用于甲烷干重整的高度分散镍负载催化剂
DOI：
10.1016/j.catcom.2012.01.002
复制
发表时间：
2012-04-05
影响因子：
3.7
通讯作者：
Zhang, Yi
中科院分区：
文献类型：
--
作者：
Lv, Xiangyu;Chen, Jian-Feng;Zhang, Yi
采用乙二醇（EG）对载体进行改性，可显著改善载体的表面性质，降低浸渍硝酸镍的分解温度，增强载体与金属的相互作用。改性SiO2载体制备的催化剂稳定性好，由于其负载镍的分散性好，镍-硅相互作用强，在甲烷干重整反应中的催化活性是未改性SiO2载体制备的催化剂的2倍以上。采用TG-DSC、FT-IR、XRD、H-2化学吸附、O-2滴定、TPR和TEM等手段对载体、催化剂前驱体和催化剂进行了表征。(C)2012爱思唯尔有限公司版权所有。
The modification of silica support using ethylene glycol (EG) significantly modified surface properties of silica support, resulting in the decreased decomposition temperature of impregnated nickel nitrate and the enhanced metal-support interaction. The catalyst prepared by modified silica support realized excellent stability and two times higher catalytic activity than the catalyst obtained from non modified silica support in dry reforming of CH4, since its highly dispersed supported nickel and strong nickel-silica interaction. The properties of silica supports, catalyst precursors and catalysts were characterized by TG-DSC, FT-IR, XRD, H-2 chemisorption, O-2 titration, TPR and TEM. (C) 2012 Elsevier B.V. All rights reserved.