以纳米孔炭(NC)为载体,采用浸渍法制备了一系列MnOx/NC催化剂,并用于以空气为氧源的苯甲醇液相氧化反应.通过X射线衍射、X射线光电子能谱、N2吸附-脱附和H2-程序升温还原等手段对催化剂进行了表征,考察了催化剂中Mn负载量和焙烧温度,以及反应条件等对反应性能的影响.结果表明,10%MnOx/NC催化剂的活性较高,反应4h后苯甲醇转化率可达80.4%;明显高于活性炭负载的MnOx催化剂.这主要归因于其表面存在大量高分散、且易于还原的Mn物种.
参考文献
[1] | Mallat T;Baiker A .[J].Chemical Reviews,2004,104:3037. |
[2] | Punniyamurthy T;Velusamy S;Iqba J .[J].Chemical Reviews,2005,105:2329. |
[3] | Enache DI;Edwards JK;Landon P;Solsona-Espriu B;Carley AF;Herzing AA;Watanabe M;Kiely CJ;Knight DW;Hutchings GJ .Solvent-free oxidation of primary alcohols to aldehydes using Au-Pd/TiO2 catalysts[J].Science,2006(5759):362-365. |
[4] | Yamaguchi K;Mizuno N .[J].Angewandte Chemie International Edition,2002,41:4538. |
[5] | Zhan BZ.;White MA.;Sham TK.;Pincock JA.;Doucet RJ.;Rao KVR. Robertson KN.;Cameron TS. .Zeolite-confined nano-RuO2: A green, selective, and efficient catalyst for aerobic alcohol oxidation[J].Journal of the American Chemical Society,2003(8):2195-2199. |
[6] | Wang L C;Liu Y M;Chen M;Cao Y He H Y Fan K N .[J].Journal of Physical Chemistry C,2008,112:6981. |
[7] | Hou W;Dehm N A;Scott R W J .[J].Journal of Catalysis,2008,253:22. |
[8] | Li CL;Zhang QH;Wang Y;Wan HL .Preparation, characterization and catalytic activity of palladium nanoparticles encapsulated in SBA-15[J].Catalysis Letters,2008(1/2):126-136. |
[9] | Son YC;Makwana VD;Howell AR;Suib SL .Efficient, catalytic, aerobic oxidation of alcohols with octahedral molecular sieves[J].Angewandte Chemie International Edition,2001(22):4280-4283. |
[10] | Luo J;Zhang Q;Garcia-Martinez J;Suib SL .Adsorptive and acidic properties, reversible lattice oxygen evolution, and catalytic mechanism of cryptomelane-type manganese oxides as oxidation catalysts[J].Journal of the American Chemical Society,2008(10):3198-3207. |
[11] | Calvert C;Joesten R;Ngala K;Villegas J Morey A Shen X F Suib S L .[J].Chemistry of Materials,2008,20:6382. |
[12] | 胡敬;孙科强;何代平;徐柏庆 .[J].催化学报,2008,28:1025. |
[13] | Tang Q H;Chen Y T;Zhou C J;Chen T Yang Y H .[J].Catalysis Letters,2009,128:210. |
[14] | Tang Q H;Huang X N;Chen Y T;Liu T Yang Y H .[J].J Mol CatalA,2009,301:24. |
[15] | Rodriguez-Reinoso F .[J].Carbon,1997,36:159. |
[16] | Serp P;Figueiredo J L.Carbon Materials for Catalysis[M].Hoboken (New Jersey):John Wiley & Sons,2009:131. |
[17] | Lee J;Yoon S;Hyeon T;Oh S M,Kim K B.[J].Chemical Communications,1999:2177. |
[18] | Meng Y;Gu D;Zhang F;Shi Y Yang H Li Z Yu C Tu B Zhao D .[J].Angewandte Chemie International Edition,2005,44:7053. |
[19] | Liu G;Liu Y;Wang Z;Liao X Wu S Zhang W Jia M .[J].Micropoousr Mesoporous Mater,2008,116:439. |
[20] | Liu, G.;Liu, Y.;Zhang, X.;Yuan, X.;Zhang, M.;Zhang, W.;Jia, M. .Characterization and catalytic performance of porous carbon prepared using in situ-formed aluminophosphate framework as template[J].Journal of Colloid and Interface Science,2010(2):467-473. |
[21] | Allen G C;Harris S J;Jutson J A;Dyke J M .[J].Applied Surface Science,1989,37:111. |
[22] | Reddy A S;Gopinath C S;Chilukuri S .[J].Journal of Catalysis,2004,243:278. |
[23] | Zou Z Q;Meng M;Zha Y Q .[J].Journal of Physical Chemistry C,2010,114:468. |
[24] | Wei L S;Li J H;Tang X F .[J].Catalysis Letters,2009,127:107. |
[25] | Ramesh K;Chen L W;Chen F X;Liu Y Wang Z Han Y F .[J].Catalysis Today,2008,131:477. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分:
-
10%
-
20%
-
30%
-
40%
-
50%