多壁碳纳米管嵌入13X/MgCl_2复合吸附剂的性能实验  

Performance of multi wall carbon nanotubes embedded 13X/MgCl_2 composite adsorbent

作　　者：赵惠忠[1] 程俊峰[1] 唐祥虎[1] 张少波[2] 

机构地区：[1]上海海事大学商船学院,上海201306 [2]东南大学能源与环境学院,江苏南京210096

出　　处：《化工学报》2017年第5期1860-1865,共6页CIESC Journal

基　　金：上海市教育委员会科研创新重点项目(13ZZ121);国家自然科学基金面上项目(50976073)~~

摘　　要：配制了将不同含量的多壁碳纳米管(MWCNT)加入复合吸附剂13X/MgCl_2中制成的新型复合吸附剂,并对其吸附、脱附和导热性能进行了测试。实验结果表明:新型复合吸附剂在闭式200℃脱附完成后,新型复合吸附剂的吸附残余量随着MWCNT含量的升高而减小,13X的吸附残余量是MWCNT含量最高的13X/MgCl_2/MWCNT(CNT-5)复合吸附剂的吸附残余量的2倍,虽然MWCNT的加入不会对13X/MgCl_2复合吸附剂在室温下的吸附性能有影响,CNT-5在开式、闭式的平衡吸附量可以达到0.52 g·g-1和0.38 g·g-1,分别是13X吸附量(0.24 g·g^(-1))的2.2和1.6倍,但新型复合吸附剂可以脱附更多的水蒸气。新型复合吸附剂的热导率随着MWCNT含量的增大而升高,CNT-5的热导率可以达到0.265 W·m^(-1)·K^(-1),是13X热导率的4.9倍。A series of new composite adsorbents with different MWCNT mass embedded zeolite 13X/MgC12 composite adsorbents were prepared, and the adsorption performance, desorption performance and thermal conductivity were measured. The experimental results show： Under the condition of the closed system in the 200 ℃, the residual adsorption of the new composite adsorbent decreases with the increase of the MWCNT content. And the residual adsorption of 13X is 2 times of 13X/MgClz/MWCNT（CNT-5）. The addition of MWCNT does not have noticeable influence on adsorption capacity at ambient temperature. The equilibrium adsorption capacity of CNT-5 could reach 0.52 and 0.38 g · g^-1 in the open and closed system, respectively. And they were 2.2 and 1.6 times of 13X which equilibrium adsorption capacity is 0.24 g · g^-l.The new composite adsorbent can desorb more water vapor. The thermal conductivity of the new composite adsorbent increases with the increase of MWCNT content, the thermal conductivity of CNT-5 can reach 0.265 W· m^-1 · K^-1, which is 4.9 times of the 13X＇s thermal conductivity.

关 键 词：复合吸附剂 平衡吸附量 热导率 多壁碳纳米管 吸附式制冷 

分 类 号：TB64[一般工业技术—制冷工程]