文献类型：期刊文献

中文题名：Preparation of nano Cu-Mo_(2)C interface supported on ordered mesoporous biochar of ultrahigh surface area for reverse water gas shift reaction

作者：Xueyuan Pan[1] Hao Sun[1] Mingzhe Ma[1] Haiquan Liao[1] Guowu Zhan[2] Kui Wang[1,3] Mengmeng Fan[3] Jingcheng Xu[3] Linfei Ding[3] Kang Sun[1] Jianchun Jiang[1]

第一作者：Xueyuan Pan

机构：[1]Key Lab.of Biomass Energy and Material,Jiangsu Province,Key and Open Lab.of Forest Chemical Engineering,SFA,National Engineering Lab.for Biomass Chemical Utilization,Institute of Chemical Industry of Forest Products,Chinese Academy of Forestry,Nanjing 210042,China.;[2]Academy of Advanced Carbon Conversion Technology,College of Chemical Engineering,Huaqiao University,Xiamen 361021,Fujian,China.;[3]Co-Innovation Center of Efficient Processing and Utilization of Forest Resources,Nanjing Forestry University,Nanjing 210042,China.

年份：2024

卷号：6

期号：1

起止页码：1647-1659

中文期刊名：Biochar

外文期刊名：生物炭(英文)

收录：CSCD:【CSCD2023_2024】；

基金：National Natural Science Foundation of China(32101474,42377249);National Key Research and Development Program of China(2023YFD2201605).

语种：英文

中文关键词：CO_(2)utilization;Reversed water gas shift;Cu-Mo_(2)C interface;Mesoporous biochar;High conversion rate

分类号：O64

摘要：High conversion rate and selectivity are challenges for CO_(2)utilization through catalytic reverse water gas shift(RWGS)reaction.Herein,a novel mesoporous biochar(MB)supported Cu-Mo_(2)C nano-interface was prepared by consecutive physical activation of coconut shells followed by carbothermal hydrogen reduction of bimetal.As compared with traditional carbon materials,this MB exhibited ultra-high specific surface area(2693 m^(2)g^(?1))and mesopore volume of mesopore(0.81 cm^(3)g^(?1))with a narrow distribution(2-5 nm),responsible for the high dispersion of binary Cu-Mo_(2)C sites,CO_(2)adsorption and mass transfer in the reaction system.Moderate carbothermal reduction led to the sufficient reduction of Mo ion with carbon matrix of MB and dispersive growth of nano Cu-Mo_(2)C binary sites(~6.1 nm)on the surface of MB.Cu+species were formed from Cu0 via electron transfer and showed high dispersion with simultaneous boosted bimetal loading due to the strong interaction between nano Mo_(2)C and Cu.These were advantageous to the intrinsic activity and stability of the Cu-Mo_(2)C binary sites and their accessibility to the reactant molecules.Under the RWGS reaction conditions of 500℃,atmospheric pressure,and 300,000 ml/g/h gas hour space velocity,the CO_(2)conversion rate over Cu-Mo_(2)C/MB reached 27.74×10^(-5)molCO_(2)/gcat/s at very low H_(2)partial pres-sure,which was more than twice that over traditional carbon supported Cu-Mo_(2)C catalysts.In addition,this catalyst exhibited 99.08%CO selectivity and high stability for more than 50 h without a decrease in activity and selectivity.This study offers a new development strategy and a promising candidate for industrial RWGS.