低温吸附泵用椰壳活性炭材料的结构测试分析

作者：Ding Peizhi; Wang Guodong^*; Chen Changqi; Xie Yuanlai; Hu Chundong; Nbi Team

来源：Chinese Journal of Vacuum Science and Technology, 2019, 39(6): 472-476.

DOI：10.13922/j.cnki.cjovst.2019.06.04

• Coconut shell activated carbon
• Micro-pore analysis
• Pore size distribution
• Specific pore volume
• Specific surface area

We reported the microstructures characterization of highly porous activated carbon made of coconut-shell,a promising adsorption material for cryogenic adsorption pump installed in Neural Beam Injector.The influence of the microstructures,including the specific surface-area,specific surface-area of micro-pore,specific pore volume and pore-size distribution of the six activated carbon types (labeled as ACs1-6),on cryoadsorption isotherm was experimentally evaluated,theoretically analyzed in BET theory,t-plot and DFT methods.The preliminary results show that when it comes to cryoadsorption,AC1 and AC2 outperform the four other activated-carbon types because of larger specific surface-area,bigger specific pore volume and higher adsorption capacity.Adsorption of AC1 and AC2,in a situation of large amount of gas and long-pulse gas injection,remains to be studied. ? 2019, Journal of Vacuum Science and Technology Publishing House. All right reserved.

• 单位
  合肥工业大学