高分子模板剂在大孔氧化铝纳米材料中的脱除  

REMOVAL OF MACROMOLECULE TEMPLATE IN MACROPORES ALUMINA NANO MATERIAL

作　　者：丁巍[1] 高慧文[1] 王鼎聪[2] 赵德智[1] 宋官龙[1] 戴咏川[1] 

机构地区：[1]辽宁石油化工大学化学化工与环境学部,辽宁抚顺113001 [2]中国石化抚顺石油化工研究院,辽宁抚顺113001

出　　处：《精细石油化工》2017年第3期20-25,共6页Speciality Petrochemicals

基　　金：中海油重大项目(HL00FW(P));中国石油化工集团资助项目(030801);大学生创新创业项目(2015073)

摘　　要：采用不同溶剂对大孔氧化铝纳米材料中高分子模板剂的脱除进行研究,对萃取后的载体进行重量和元素分析,并进行扫描电镜(SEM)和孔性质(BET)表征;同时对油相产物进行凝胶色谱(GPC)和红外定性(IR)分析。结果表明,采用汽油-乙醇(PT+AE)作为萃取剂,模板剂(RHP)脱除率达到86.81%,碳、氢、氮元素脱除率分别为80.44%、81.67%、62.83%。载体经萃取、焙烧后,压汞法测得孔容为1.24 mL/g、比表面积为253.3m^2/g、可几孔径为17.4nm。SEM照片证实模板剂的脱除使载体形成大量介孔/大孔结构。当聚异丁烯马来酸酐(PIBSA)和三乙醇胺(TEA)的质量比例为12∶1时,GPC测得RHP的重均相对分子质量M_w和数均相对分子质量M_n分别为14 384和2 545g/mol,说明模板剂为大分子高聚物,其分散系数M_w/M_n为5.65,说明相对分子质量分布范围较宽。红外定性分析进一步证实模板剂和油相产物具有相同的结构,说明模板剂可回收利用,绿色环保。The macromolecule templates are removed from macropores alumina nano material by using different solvents. The extracted supports are characterized by gravimetric, element, SEM and BET. Meanwhile, the oil phase products are analyzed by the gel chromatography （GPC） and infrared （IR）. The results showed that the removal rate of templates reached 86.81%, and that of carbon, hydrogen and nitrogen is 80.44%, 81.67% and 62.83% when the petrol-ethanol as extraction solvent, respectively. The calcinated macropores alumina support has a pore volume of 1.24 mL/g, a surface area of 253.3 m2/g and a pore diameter of 17.4 nm. According to SEM images, the removed templates supports are formed many meso/macro-porous structures. The Mw and/Vim of RHP is 14 384 g/mol and 2 545, and the dispersion coefficient Mw/Mn is 5.65 when the mass ratio of PIBSA and TEA is 12 ： 1. The results that confirmed the templates are macromoleclar polymer and the molecular weight distribution are relatively wide range. The templates can be recycled and utilization because IR spectra further confirmed that the templates and oil phase product are the same structure. This research is accorded to green environmental protection.

关 键 词：溶剂萃取 大孔氧化铝 模板剂 分子扩散 结构 

分 类 号：O643.36[理学—物理化学]