摘要
以神华集团煤直接液化残渣为原料,采用KOH活化法,经炭化、活化一体反应制得炭基催化剂。利用TG、SEM、BET、XRD等表征分析,确定了炭基催化剂的制备条件,探究了炭基催化剂的失重行为、碱炭比、比表面积及孔径的大小等因素对CH_4-CO_2重整制合成气反应催化活性的影响。结果表明在经过KNO_3预氧化、碱炭质量比为3的KOH活化条件下制备的炭基催化剂,收率为43.3%、比表面积达到1632m^2/g,该催化剂在CH_4-CO_2重整反应中具有良好的催化效果,可使CH_4和CO_2的转化率均达90%以上。
Taking the Shenhua Group coal direct liquefaction residue as raw material, a KOH activation method was used to produce a carbon-based catalyst through carbonization and activation. TG, SEM, BET and XRD were employed to characterize the catalyst. The preparation conditions of the catalyst were determined, and the effects of the weight loss behavior of the catalyst, the ratio of alkali to carbon, the specific surface area, and the pore size on the catalytic activity in CH4-CO2 reforming to syngas were investigated. The results showed that preparing the catalyst by KOH activation with KNO3 pre-oxidation and an alkaline/carbon mass ratio of 3 could obtain a 43.3% yield of catalyst with a specific surface area of 1632m^2/g, and the catalyst exhibied good catalytic activity in CH4-CO2 reforming, giving a conversion of above 90% for both of CH4 and CO2.
作者
吕鹏刚
张浩
刘朋
宣乐
徐龙
马晓迅
Lv Peng-gang;ZHANG Hao;LIU Peng;XUAN Le;XU Long;MA Xiao-Xun(School of Chemical Engineering, Northwest University, International Scientific and Technological Cooperation Base for Clean Utilization of Hydrocarbon Resources, Chemical Engineering Research Center of the Ministry of Education for Advance Use Technology of Shanbei Energy, Shaanxi Research Center of Engineering Technology for Clean Coal Conversion, Collaborative Innovation Center for Development of Energy and Chemical Industry in Northern Shanxi, Xi'an 710069, China)
出处
《天然气化工—C1化学与化工》
CAS
CSCD
北大核心
2019年第2期1-7,共7页
Natural Gas Chemical Industry
基金
国家重点研发计划项目课题(2018YFB0604603)
陕西省重点研发计划(2018ZDXMGY-167)
陕西省教育厅服务地方专项计划项目(17JF029)
