Cu/MIL-101(Cr)吸附剂的制备及其CO吸附性能  

Preparation and CO Adsorption Performance of Cu/MIL-101 Adsorbents

作　　者：徐言言 段龙[2] 

机构地区：[1]广东粤电新会发电有限公司,广东江门529100 [2]南京工业大学材料化学工程国家重点实验室,江苏南京210009

出　　处：《化工技术与开发》2017年第3期12-17,共6页Technology & Development of Chemical Industry

摘　　要：采用浸渍法将甲酸铜与氯化铜前驱体负载到金属有机骨架材料MIL-101载体上,通过改变活化温度和铜盐负载量,制备Cu/MIL-101吸附剂。用XRD、FT-IR、TG、N_2吸附和脱附等表征手段考察材料的结构和性能,测试Cu/MIL-101吸附剂在101.3k Pa、25℃的CO、N_2吸附量。结果表明,制备该吸附剂的最佳活化温度为220℃,最佳铜盐负载量为4mmol·(gMIL-101)^(-1)。铜基改性后的吸附剂CO的吸附量由23.93cm^3·g^(-1)提高到53.55cm^3·g^(-1),N_2的吸附量由5.81cm^3·g^(-1)下降到3.29cm^3·g^(-1),用理想吸附溶液理论IAST模型预测CO/N_2吸附选择性由26提高到2194。吸附剂可在200℃、真空下再生。Copper（Ⅱ） formate and cupric chloride precursor were loaded to metal organic framework MIL-101 by impregnation method. Cu/MIL-101 adsorbents were prepared by change of the activation temperature and different copper loadings. Their crystal structure and properties were characterized by XRD, N2 adsorption and desorption, FT-IR and TG. The adsorption capacities of CO and N2 on Cu/MIL-101 adsorbents were measured under 298K and 101.3kPa. The results showed that optimum activation temperature and copper loadings of the adsorbents was 493K and 4mmol/g MIL-101. Copper base-functionalized MIL-101 adsorbent, the adsorption capacity of CO was improved from 23.93cm3/g to 53.55cm3/g, while the adsorption capacity of N2 was decreased from 5.81cm3/g to 3.29cm3/g, the ideal adsorbed solution theory （IAST） model was used to predict the adsorption separation of CO over N2, the adsorption selectivity increased from 26 of MIL-101 to 2194 of Cu/MIL-101. The adsorbents could be regenerated under conditions of 200℃ and vacuum.

关 键 词：金属有机骨架 -氧化碳 氯化亚铜 浸渍 吸附选择性 

分 类 号：TQ424.2[化学工程]