MOF-808改性材料吸附脱除塑料油品中的有机氯化物  

Adsorption and removal of organochloride from plastic oil by MOF-808-modified material

作　　者：姬娅茹 李瑞丽[1] 翟永怡 张世博[1] JI Yaru;LI Ruili;ZHAI Yongyi;ZHANG Shibo(State Key Laboratory of Heavy Oil Processing,China University of Petroleum,Beijing 102249,China)

机构地区：[1]中国石油大学(北京)重质油全国重点实验室,北京102249

出　　处：《中国塑料》2024年第6期82-89,共8页China Plastics

摘　　要：根据MOF-808材料的优良吸附性能,研究其对塑料裂解油中的有机氯化物的脱除效果。首先制备了MOF-808材料,然后采用水热合成法掺杂Fe制备了不同掺杂比的Zr∶Fe(x∶y)@MOF-808材料进行结构表征;选取塑料裂解油中典型的4种有机氯化物配置成模型油,以模型油中有机氯化物的脱除率作为依据,确定最佳x∶y=1∶0.67;探究了其吸附脱氯实验的最佳反应条件和再生重复使用性能,并考察了其吸附机理。结果表明,制备的Zr∶Fe(1∶0.67)@MOF-808吸附材料的结构及稳定性良好;在吸附温度50℃、吸附时间2 h、剂油比为1∶40时,对模型油中氯化物的脱除率高达97.66%;吸附剂重复使用6次后脱氯率仍在85%以上;该吸附过程符合拟二级动力学模型,是自发进行的化学吸附过程。The removal effectiveness of the MOF-808 material for organic chloride in a plastic cracking oil was studied in light of its excellent adsorption properties.The MOF-808 materials was prepared,and then the Zrx∶Fey@MOF-808 materials with different doping ratios were prepared by using a hydrothermal synthesis method.Four typical organic chlorides in the plastic cracking oil were selected to prepare a model oil,and the optimal x/y ratio was determined to be 1∶0.67 according to the removal rate of organic chlorides in the model oil.The optimal reaction conditions and reuse performance of adsorption dechlorination experiments were determined,and the corresponding adsorption mechanism was investigated.The results indicated that the as-prepared Zr1∶Fe0.67@MOF-08 adsorption material exhibited has good structure and stability.The removal rate of chloride in the model oil was as high as 97.66%at an adsorption temperature of 50℃,an adsorption time of 2 h,and an agent/oil mass ratio of 1/40.The dechlorination rate remained to be above 85%after repeatedly using the adsorbent for 6 times.The adsorption process conformed to a pseudo-second-order kinetic model,belonging to a spontaneous chemisorption process.

关 键 词：塑料裂解油 氯化物 吸附脱氯 MOF-808 吸附动力学 

分 类 号：TQ320.9[化学工程—合成树脂塑料工业]