采用直接焙烧Mg(NO3)2·6H2O制备了固体MgO催化剂,并以H2O2为氧源,乙腈为溶剂,考察了其对苯乙烯环氧化反应的催化性能.运用X射线衍射、N2吸附-脱附、热重和CO2程序升温脱附对催化剂进行了表征.结果表明,MgO表面碱的强度在苯乙烯环氧化反应中起主导作用,而其表面的碱量、比表面积及孔体积等的影响较小.经750℃焙烧制得MgO-750样品的碱性最强,其催化性能最佳.在H2O2/苯乙烯摩尔比=6,于60℃反应10h时,苯乙烯转化率为97.0%,环氧苯乙烷选择性为88.4%.
参考文献
| [1] | Wang X L;Wu G D;Wei W;Sun Y H .[J].Catalysis Letters,2010,136:96. |
| [2] | Pardeshi S K;Pawar R Y .[J].Materials Research Bulletin,2010,45:609. |
| [3] | Gago S;Balula S S;Figueiredo S;Lopes A D Valente A A Pillinger M Goncalves I S .[J].Applied Catalysis A:General,2010,372:67. |
| [4] | Qi B;Lu X H;Zhou D;Xia Q H Tang Z R Fang S Y Pang T Dong Y L .[J].Journal of Molecular Catalysis A:Chemical,2010,322:73. |
| [5] | Fujita M;Que L Jr .[J].Advanced Synthesis and Catalysis,2004,346:190. |
| [6] | Patil N S;Uphade B S;Jana P;Bharagava S K Choudhary V R .[J].Journal of Catalysis,2004,223:236. |
| [7] | Maksimchuk, NV;Kovalenko, KA;Arzumanov, SS;Chesalov, YA;Melgunov, MS;Stepanov, AG;Fedin, VP;Kholdeeva, OA .Hybrid Polyoxotungstate/MIL-101 Materials: Synthesis, Characterization, and Catalysis of H_2O_2-Based Alkene Epoxidation[J].Inorganic Chemistry: A Research Journal that Includes Bioinorganic, Catalytic, Organometallic, Solid-State, and Synthetic Chemistry and Reaction Dynamics,2010(6):2920-2930. |
| [8] | Jin H L;Jiang N Z;Oh S M;Park S E .[J].Topics in Catalysis,2009,52:169. |
| [9] | 王广建;刘正旺;刘义武;刘广卿 徐明霞 王磊 .[J].催化学报,2008,29:1159. |
| [10] | Payne G B;Williams P H .[J].Journal of Organic Chemistry,1961,26:651. |
| [11] | Payne G B .[J].Tetrahedron,1962,18:763. |
| [12] | Ueno S;Yoshida K;Ebitani K;Kaneda K.[J].Chemical Communications,1998:295. |
| [13] | Pillai U R;Sahle-Demessie E;Varma R S .[J].Tetrahedron Letters,2002,43:2909. |
| [14] | Kirm I;Medina F;Rodríguez X;Cesteros Y Salagre P Sueiras J .[J].Applied Catalysis A:General,2004,272:175. |
| [15] | Ionescu R;Pavel O D;B(i)rjega R;Zǎvoianu R Angelescu E .[J].Catalysis Letters,2010,134:309. |
| [16] | Seifi M;Sheibani H .[J].Catalysis Letters,2008,126:275. |
| [17] | Matsuda T;Sagimoto M .[J].Reaction Kinetics and Catalysis Letters,1991,44:69. |
| [18] | Ballarini N;Cavani F;Maselli L;Montaletti A Passeri S Scagliarini D Flego C Perego C .[J].Journal of Catalysis,2007,251:423. |
| [19] | Duan G R;Yang X J;Chen J;Huang G H Lu L D Wang X .[J].Powder Technology,2007,172:27. |
| [20] | Palomeque J;Loseph J;Figueras F .[J].Journal of Catalysis,2002,211:150. |
| [21] | Hattori H .[J].Chemical Reviews,1995,95:537. |
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%