文献类型：期刊文献

中文题名：倒载型高分散M-Au/MgAl_(2)O_(4)催化剂在高压甲烷干重整反应的抗积碳性能研究

英文题名：Study on the carbon-resistant performance of reverse-loaded M-Au/MgAl_(2)O_(4) catalysts in elevated pressure methane dry reforming

作者：姚俊韬[1];毛雨馨[1];刘志成[2];朱贻安[1];朱卡克[1]

机构：[1]华东理工大学化工学院,绿色化工与工业催化全国重点实验室,上海200237;[2]中石化(上海)石油化工研究院有限公司,绿色化工与工业催化全国重点实验室,上海201208

年份：2026

卷号：46

期号：1

起止页码：108

中文期刊名：现代化工

外文期刊名：Modern Chemical Industry

收录：;北大核心:【北大核心2023】；

基金：国家自然科学基金项目(U1663221)。

语种：中文

中文关键词：加压甲烷二氧化碳重整;高分散催化剂;Co;Ni;抗积碳

外文关键词：pressurized methane and carbon dioxide reforming;high dispersion;Co;Ni;coke resistance

摘要：探索了一种用于高压甲烷干重整(DRM)的倒载型M-Au/MgAl_(2)O_(4)(M=Ni、Co)催化剂,高分散且不溶于Au表面的活性金属Ni/Co具有抗积碳和抗烧结性能。利用SEM/Mapping与Line-scan对新鲜M-Au/MgAl_(2)O_(4)的表面结构进行分析,证明了活性金属在Au/MgAl_(2)O_(4)上高度分散且与Au不互溶。设计的催化剂在化学计量比进料、850℃、2 MPa条件下表现出显著的稳定性(100 h)。XRD、TGA、TEM对反应后催化剂上积碳分析,在M-Au/MgAl_(2)O_(4)上仅检测到少量积碳物种,而对照样品上识别出明显的顽固石墨和晶须碳,且存在明显烧结,揭示了具有高度分散活性金属形态的M-Au/MgAl_(2)O_(4)(M=Ni, Co)催化剂在高压甲烷干重整中的抗积碳和抗烧结性能。
A reverse-loaded M-Au/MgAl_(2)O_(4)(M=Ni,Co)catalyst was designed for methane dry reforming(DRM)at high pressure.The active metals Ni or Co,which are highly dispersed and immiscible on the Au surface,exhibit the performance of anti-sintering and coke-resistance.SEM/Mapping and Line-scan were applied to characterize the surface structure of fresh M-Au/MgAl_(2)O_(4) and demonstrate that the active metal is highly dispersed and immiscible on Au/MgAl_(2)O_(4).The designed catalyst exhibited significant operational stability(100 h)under conditions of chemical stoichiometric feed,at 850℃,and 2 MPa.XRD and TGA were conducted on spent catalysts to analyse the surface structure of Co-Au and Ni-Au.Only a small amount of combustible carbonaceous species was detected on the M-Au/MgAl_(2)O_(4),with little change on active component particle size.In contrast,evident stubborn graphite and whisker carbon was identified on the spent controlled catalysts,along with increase of particle size,indicating the coke-resistance and anti-sintering of M-Au/MgAl_(2)O_(4)(M=Ni,Co)with highly dispersed active metal morphologies in high-pressure methane dry reforming.