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Chemistry and Industry of Forest Products ›› 2020, Vol. 40 ›› Issue (3): 39-44.doi: 10.3969/j.issn.0253-2417.2020.03.005

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Effect of Pore Structure on HCN Defence Performance of Activatied Carbon Supported Metallic Oxide Catalyst

Hao SUN1,2,3,Dali ZHAO4,Yanren JIN4,Yanyan LIU1,Jianchun JIANG1,2,*(),Haoyang XING4   

  1. 1. Institute of Chemical Industry of Forest Products, CAF; National Engineering Lab. for Biomass Chemical Utilization; Key Lab. of Chemical Engineering of Forest Products, National Forestry and Grassland Administration; Key Lab. of Biomass Energy and Material, Jiangsu Province, Nanjing 210042, China
    2. Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Nanjing Forestry University, Nanjing 210037, China
    3. Research Institute of Forestry New Technology, CAF, Beijing 100091, China
    4. Shanxi Xinhua Chemical Co., Ltd., Taiyuan 030008, China
  • Received:2019-12-31 Online:2020-06-28 Published:2020-06-29
  • Contact: Jianchun JIANG E-mail:bio-energy@163.com

Abstract:

A series of coal activated carbon supported metallic oxide were preparedby incipient-wetness impregnation method with cuprammonium complex and so on.The pore structure, metal distribution and morphology of activated carbon before and after loading of metal sites were analyzed by N2 adsorption-desorption, scanning electron microscope, energy dispersive spectroscopy and transmission electron microscope.The HCN defence time of carbon catalyst was also tested. Hence, the effect of pore size distribution of activated carbon supportor on the HCN defence performance of catalyst was demonstrated.The effective pore size distribution of activated carbon for adsorbing cuprammonium complex was 1.2-2.1 nm, which facilitated the penetration of cuprammonium complex inside the carbon supportor and formation of the active sites for dispersing Cu2O and enhancement of HCN defence time. However, the mesopores(>2.1 nm) of carbon supportor would result in the severe accumulation of the active particles, reduction of metal dispersion and thus decreasing the HCN defence performance of carbon catalysts.The HCN defence time of activated carbon supported catalyst was longer than 30 min, as the pore volume of activated carbon with the pore size of 1.2-2.1 nm was over 0.142 4 cm3/g and the pore volume with the pore size of >2.1 nm was less than 0.082 4 cm3/g.

Key words: activated carbon supported metallic oxide, defence of HCN, pore size distribution, nanoparticles

CLC Number: