文献类型：期刊文献

中文题名：球形聚合物刷对卟啉镍的脱除规律研究

英文题名：Study on removal of nickel porphyrin by spherical polymer brush

作者：蔡丽军[1];沈凯莉[1];许军[1];任满年[2];曹发海[1]

机构：[1]华东理工大学,大型工业反应器工程教育部工程研究中心,上海200237;[2]中国石化洛阳分公司,河南洛阳471012

年份：2022

卷号：42

期号：3

起止页码：128

中文期刊名：现代化工

外文期刊名：Modern Chemical Industry

收录：CSTPCD;;Scopus;北大核心:【北大核心2020】；CSCD:【CSCD_E2021_2022】；

基金：国家自然科学基金项目(21878098)。

语种：中文

中文关键词：脱镍;卟啉镍;聚合物刷;模拟油

外文关键词：nickel removal;nickel porphyrin;polymer brushes;simulated oil

摘要：以八乙基镍卟啉(OEP-Ni)为模型物,探究聚乙烯基咪唑刷(PVIm@SiO_(2))、聚乙烯基吡咯烷酮刷(PVP@SiO_(2))和聚丙烯酸刷(PAA@SiO_(2))对OEP-Ni的脱除差异性。结果表明,当脱镍温度为110℃、时间为3 h、脱镍剂质量分数为6000μg/g时,PVIm@SiO_(2)、PVP@SiO_(2)和PAA@SiO_(2)对OEP-Ni的脱除率分别为28.9%、15.7%和9.8%;同时,3种聚合物刷对模拟原油的脱除率分别为9.9%、6.8%和5.8%。DFT计算结果表明,3种单体对镍的螯合能力为乙烯基咪唑(VIm)>乙烯基吡咯烷酮(VP)>丙烯酸(AA),与聚合物刷对OEP-Ni的脱除效果一致。以四苯基镍卟啉(TPP-Ni)为模型物,研究PVIm@SiO_(2)、PAA@SiO_(2)和5%醋酸溶液对TPP-Ni的脱除效果,结果表明,PVIm@SiO_(2)和PAA@SiO_(2)对TPP-Ni的脱除率分别为7.6%和9.3%,而5%醋酸溶液脱镍率仅为1.6%,因此,聚合物刷是一种比传统小分子酸更有前景的脱金属剂。
Taking octaethyl nickel porphyrin(OEP-Ni)as a model compound,the differences in the removal of OEP-Ni by polyvinyl imidazole brushes(PVIm@SiO_(2)),polyvinylpyrrolidone brushes(PVP@SiO_(2))and polyacrylic acid brushes(PAA@SiO_(2))respectively are explored.The results show that the removal rates of nickel by PVIm@SiO_(2),PVP@SiO_(2) and PAA@SiO_(2) reach 28.9%,15.7%and 9.8%,respectively when the temperature is at 110℃,the removal process spends 3 h,and the mass fraction of polymer brush is 6,000μg·g^(-1).It is also found that the removal rates of these three polymer brushes to the simulated crude oil reach 9.9%,6.8%and 5.8%,respectively.In addition,DFT calculation results show that among three monomers,vinylimidazole(VIm)has the largest chelating ability to nickel,vinylpyrrolidone(VP)comes next and acrylic acid(AA)has the smallest one,which are consistent with the removal effect of polymer brushes on OEP-Ni.Taking tetraphenyl nickel porphyrin(TPP-Ni)as a model compound,its removal effects by PVIm@SiO_(2),PAA@SiO_(2) and 5%acetic acid solution are studied.It is shown that the removal rates of TPP-Ni by PVIm@SiO_(2),PAA@SiO_(2) and 5%acetic acid solution reach 7.6%,9.3%and 1.6%,respectively.It is verified that polymer brush is a more promising de-metalizing agent than traditional small molecule acids.