Adsorption Behavior of Halogenated Anesthetic and Water Vapor on Cr‐Based MOF (MIL‐101) Adsorbent. Part II. Multiple‐Cycle Breakthrough Tests

Multiple‐cycle breakthrough tests of a binary gas mixture of the halogenated anesthetic sevoflurane (SF) and water vapor were performed on both the synthesized chromium‐based metal organic framework (Cr‐MOF) and a conventionally used reference adsorbent. At 1 vol % SF and 50 % relative humidity mixture composition, the Cr‐MOF (MIL‐101) showed a significantly higher SF adsorption capacity, lower water vapor adsorption capacity, and no roll‐up effect compared to the reference sample. After each adsorption measurement, the saturated column was regenerated. MIL‐101 showed higher stability with minor SF capacity loss after 14 cycles, while the reference sample lost about a half of the SF capacity after 17 cycles.     

基于三维框架材料H3PW6Mo6O40/Zn(BDC)(4,4'-Bipy)0.5高效吸附亚甲基蓝

采用溶剂热法,用H3PW6Mo6O40对金属有机骨架Zn(BDC)(4,4'-Bipy)05进行改性,制备出金属有机骨架复合材料H3PW6Mo6O40/Zn(BDC)(4,4'-Bipy)0.5.利用IR、XRD、TG、SEM对其结构进行分析.同时,以亚甲基蓝溶液模拟染料废水进行吸附实验,考察了初始pH、温度对吸附容量的影响,探究了其吸附等温线和动力学特征.实验结果表明,H3PW6Mo6O40/Zn(BDC)(4,4'-Bipy)05对亚甲基蓝有很好的吸附性能,在20℃和pH 2的条件下,吸附量达588.24mg/g,且该吸附符合Langmuir等温吸附模型和拟二级动力学方程,吸附过程自发且放热.