采用溶胶-凝胶法合成了一种桥键嵌入型双咪唑离子液体功能化介孔硅基材料(Bis-PImBr-PMO-SBA-15),然后离子交换将Keggin 型磷钨酸负载于其上,制备了 PW-Bis-PImBr-PMO-SBA-15催化剂,并运用X射线衍射、N2吸附-脱附、透射电子显微镜、傅里叶变换红外光谱和热重分析等手段对其进行表征.结果表明,该催化剂具有SBA-15分子筛的有序六方孔道结构,且负载后的磷钨酸阴离子仍保持其完整的Keggin结构.在以水为溶剂,30％ H2O2为氧化剂的苯甲醇氧化反应中,该催化剂表现出比均相的或负载于SBA-15表面的Keggin型HPW更高的催化活性,苯甲醇转化率和苯甲醛选择性分别可达95％和94％.离子液体的咪唑阳离子可调节磷钨酸阴离子的氧化-还原性能,从而有利于提高催化剂的催化活性.
参考文献
| [1] | Yadav G D;Mistry C K .[J].Journal of Molecular Catalysis A:Chemical,2001,172:135. |
| [2] | Holum J R .[J].Journal of Organic Chemistry,1961,26:4814. |
| [3] | Sheldon R A;Arends I W C E;Isabel U.Green Chemistry and Catalysis[M].Weinheim:Wiley-VCH,2007:421. |
| [4] | Zauche TH.;Espenson JH. .Oxidation of alcohols by hydrogen peroxide, catalyzed by methyltrioxorhenium (MTO): A hydride abstraction[J].Inorganic Chemistry: A Research Journal that Includes Bioinorganic, Catalytic, Organometallic, Solid-State, and Synthetic Chemistry and Reaction Dynamics,1998(26):6827-6831. |
| [5] | 庄大英,金勇,喻宁亚,秦亮生,刘建福,银董红,杨翠清.有机官能化介孔硅基材料负载纳米金催化剂的制备及其催化性能[J].催化学报,2009(09):896-900. |
| [6] | Lou L L;Yu K;Ding F;Peng X J Dong M M Zhang C Liu S X .[J].Journal of Catalysis,2007,249:102. |
| [7] | Bigi F;Corradini A;Quarantelli C;Sartori G .[J].Journal of Catalysis,2007,250:222. |
| [8] | Leng Y;Wang J;Zhu D;Zhang M Zhao P Long Z Huang J .[J].Green Chemistry,2011,13:1636. |
| [9] | Zhang Sh J;Zhao G D;Gao Sh;Xi Z W Xu J .[J].Journal of Molecular Catalysis A:Chemical,2008,289:22. |
| [10] | Zhao W;Zhang Y;Ma B;Ding Y Qiu W .[J].Catalysis Communications,2010,11:527. |
| [11] | Kamala P;Pandurangan A .[J].Catalysis Communications,2008,9:2231. |
| [12] | Xi Z W;Zhou N;Sun Y;Li K L .[J].Science,2001,292:1139. |
| [13] | Li K L;Zhou N;Gao Sh;Cao G Y Xi Z W .[J].OXIDATION COMMUNICATIONS,2004,27:827. |
| [14] | Zhang Sh J;Gao Sh;Xi Z W;Xu J .[J].Catalysis Communications,2007,8:531. |
| [15] | 张生军,赵公大,高爽,奚祖威,徐杰.醇类氧化反应中杂多酸盐催化剂的光谱研究[J].分子催化,2007(06):499-502. |
| [16] | Lee B;Im H J;Luo H M;Hagaman E W Dai S .[J].Langmuir,2005,21:5372. |
| [17] | Liu Ch;Tan R;Yu N Y;Yin D H .[J].Microporous and Mesoporous Materials,2010,131:162. |
| [18] | 袁程远,陈静.介孔硅担载磷钨杂多酸催化剂的制备及其对环戊烯氧化反应的催化性能[J].催化学报,2011(07):1191-1198. |
| [19] | 高鹏飞,张铁明,周媛,赵永祥.Co（Ⅲ）官能化SBA-15的制备、表征及其催化环己烯环氧化[J].催化学报,2011(01):166-171. |
| [20] | Jermy BR;Pandurangan A .H3PW12O40 supported on MCM-41 molecular sieves: An effective catalyst for acetal formation[J].Applied Catalysis, A. General: An International Journal Devoted to Catalytic Science and Its Applications,2005(2):185-192. |
| [21] | Ghanbari-Siahkali A.;Dwyer J.;Anderson MW.;Philippou A. .The acidity and catalytic activity of heteropoly acid on MCM-41 investigated by MAS NMR, FTIR and catalytic tests[J].Applied Catalysis, A. General: An International Journal Devoted to Catalytic Science and Its Applications,2000(1):57-69. |
| [22] | Jalil P A;Al-Daous M A;Al-Arfaj A R A;Al-Amer A M Beltramini J Barri S A I .[J].Applied Catalysis A:General,2001,207:159. |
| [23] | Wang G J;Liu G Q;Xu M X;Yang Z X Liu Z W Liu Y W Chen S F Wang L .[J].Applied Surface Science,2008,255:2632. |
| [24] | Liu J;Yang J;Yang Q H;Wang G Li Y .[J].Advanced Functional Materials,2005,15:1297. |
| [25] | Llusar M.;Monros G.;Roux C.;Pozzo JL.;Sanchez C. .One-pot synthesis of phenyl- and amine-functionalized silica fibers through the use of anthracenic and phenazinic organogelators[J].Journal of Materials Chemistry: An Interdisciplinary Journal dealing with Synthesis, Structures, Properties and Applications of Materials, Particulary Those Associated with Advanced Technology,2003(10):2505-2514. |
| [26] | Marme F;Coudrier G;Vedrine J C .[J].Microporous Misoporous Mater,1998,22:151. |
| [27] | Blasco T.;Martinez A.;Martinez-Escolano P.;Corma A. .Supported heteropolyacid (HPW) catalysts for the continuous alkylation of isobutane with 2-butene: The benefit of using MCM-41 with larger pore diameters[J].Journal of Catalysis,1998(2):306-313. |
| [28] | Chiang MH;Dzielawa JA;Dietz ML;Antonio MR .Redox chemistry of the Keggin heteropolyoxotungstate anion in ionic liquids[J].Journal of Electroanalytical Chemistry: An International Journal Devoted to All Aspects of Electrode Kinetics, Interfacial Structure, Properties of Electrolytes, Colloid and Biological Electrochemistry,2004(1):77-84. |
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