Page 97 - 精细化工2019年第8期
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第 36 卷第 8 期                             精   细   化   工                                  Vol.36, No.8
             201 9 年 8 月                             FINE CHEMICALS                                 Aug.    2019


              催化与分离提纯技术
                                纳米镍分子印迹催化剂的制备及


                                      选择性催化对硝基苯甲醇



                                                                                       *
                                 高   磊,刘甜甜,杨雨滋,王圣陶,袁新华
                                     (江苏大学  材料科学与工程学院,江苏  镇江    212013)

                 摘要:以对硝基苯甲醇(p-NBA)和六水合硝酸镍的络合物为模板分子,丙烯酰胺(AM)为功能单体,二甲基
                 丙烯酸乙二醇酯(EGDMA)为交联剂,采用本体聚合设计制备了镍纳米粒子分子印迹聚合物(Ni-MIP),通过
                 FTIR、UV-Vis、SEM 和 TEM 等手段进行了表征。以非分子印迹聚合物 Ni-NIP 和空白非印迹聚合物 NIP 为对照,
                 考察了 Ni-MIP 对 p-NBA 的催化活性和选择性。结果表明:以水为溶剂时,过氧化氢(质量分数 30%)氧化 p-NBA
                 的反应中,Ni-MIP 为催化剂,反应 1 h 时 p-NBA 转化率 72%,高于 Ni-NIP(64%),NIP 没有催化效果;在 p-NBA
                 结构类似物邻硝基苯甲醇(o-NBA)的反应中,Ni-MIP 的转化率仅为 24%,明显低于 Ni-NIP 的转化率(64%),
                 说明 Ni-MIP 催化剂具有与底物分子 p-NBA 相匹配的印迹空腔位点,可实现特异性识别催化。
                 关键词:分子印迹聚合物;Ni 纳米粒子;对硝基苯甲醇;氧化;选择性;催化技术
                 中图分类号:TQ317      文献标识码:A      文章编号:1003-5214 (2019) 08-1585-06



                    Preparation of Ni Nanoparticle Molecularly Imprinted Polymer and
                                 Its Selective Catalyzing p-Nitrobenzyl Alcohol


                                                                                             *
                           GAO Lei, LIU Tian-tian, YANG Yu-zi, WANG Sheng-tao, YUAN Xin-hua
                       (School of Materials Science and Engineering, Jiangsu University, Zhenjiang 212013, Jiangsu, China)


                 Abstract:  With  complex  of  p-nitrobenzyl  alcohol  (p-NBA)  and  nickel  nitrate  hexahydrate  as  template
                 molecule,  acrylamide  (AM)  as  functional  monomer  and  ethylene  glycol  dimethacrylate  (EGDMA)  as
                 crosslinking  agent,  the  Ni  nanoparticle  molecularly  imprinted  polymer  (Ni-MIP)  was  prepared  by  bulk
                 polymerization.  The  prepared  Ni-MIP  was  characterized  by  FTIR,  UV-Vis,  SEM  and  TEM.  Using
                 non-molecularly imprinted polymers of Ni-NIP and NIP as comparison samples, the catalytic activity and
                 selectivity  of  Ni-MIP  for  p-NBA  were  investigated.  The  results  show  that  in  the  oxidation  reaction  of
                 p-NBA with water as solvent and H 2O 2 as oxidant, the conversion of p-NBA reaches 72% after 1 h with
                 Ni-MIP as catalyst. The conversion rate of p-NBA is 64% with Ni-NIP as catalyst, and NIP has no catalytic
                 effect. The catalytic efficiency of Ni-MIP is 24% for p-NBA structural analogue of o-nitrobenzyl alcohol
                 (o-NBA),  which is  much lower than  that  of  Ni-NIP (64%). It  is indicates  that  the  Ni-MIP  catalyst  has
                 imprinted cavity matching the substrate molecule p-NBA, which can realize specific recognition catalysis.
                 Key words: molecularly imprinted polymer; Ni nanoparticle; p-nitrobenzyl alcohol; oxidation; selectivity;
                 catalysis technology


                 取代苯甲醇选择性氧化生成相应的醛基化合物                          酸氧化法、高锰酸钾氧化法以及利用 DMSO 和酸酐
            是精细化学品和有机中间体合成中的重要反应                      [1-2] ,  氧化方法等。但这些氧化方法大都存在后处理难、
            其合成方法倍受关注          [3-4] 。传统工艺大多采用稀硝酸              没有选择性、转化率低、对环境产生极大的污染等
            来催化该反应,此外实验室还可采用铬酐(CrO 3 )铬                        问题。因此众多科研工作者通过跨学科的合作,在制


                 收稿日期:2018-11-11;  定用日期:2019-02-25; DOI: 10.13550/j.jxhg.20180835
                 基金项目:国家自然科学基金资助项目(20704019,51603093);江苏省双创团队项目(2015026)
                 作者简介:高   磊(1993—),男,硕士生。联系人:袁新华(1975—),男,教授,E-mail:yuanxh@ujs.edu.cn。
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