以MCM-41为骨架,以无机钛源Ti(SO4)2为原料成功合成了不同Ti含量的Ti-MCM-41样品,并考察了它们在H2O2氧化苯乙烯反应中的催化性能,研究了溶剂和Ti含量等因素对其催化性能的影响.结果表明,该反应主要产物为苯甲醛,苯乙烯转化率和苯甲醛收率均随骨架Ti含量增加而增加;催化剂中钛含量相近时,孔径的减小能够改善其催化性能;反应体系的合适溶剂应 具有一定极性,如乙腈；降低溶剂极性和H2O2浓度可减少苯乙烯的进一步氧化,从而适当增加了苯乙醛和环氧苯乙烷选择性.
参考文献
| [1] | Choudhary V R;Chaudhari P A;Narkhede V S .[J].Catalysis Communications,2003,4:171. |
| [2] | Caravati M;Grunwaldt J D;Baiker A .[J].Catalysis Today,2004,91-92:1. |
| [3] | Buonomenna M G;Drioli E .[J].Organic Process Research & Development,2008,12:982. |
| [4] | Bulushev D A;Rainone F;Kiwi-Minsker L .[J].Carol Today,2004,96:195. |
| [5] | Wang F;Xu J;Li X G;Gao J,Zhou L P,Ohnishi R .[J].Advanced Synthesis and Catalysis,2005,347:1987. |
| [6] | Chong, MB;Cheng, DG;Liu, L;Chen, FQ;Zhan, XL .Deactivation of CeO2 catalyst in the hydrogenation of benzoic acid to benzaldehyde[J].Catalysis Letters,2007(3/4):198-201. |
| [7] | 蒋斯扬,孔岩,吴丞,徐铮,朱海洋,王春燕,王军,颜其洁.高Cu含量MCM-41在苯直接羟基化反应中的催化性能[J].催化学报,2006(05):421-426. |
| [8] | Tanev P T;Chibwe M;Innavaia T J .[J].Nature,1994,368:321. |
| [9] | 孔岩,徐鑫杰,吴勇,张瑞,王军.助剂种类对Cu-MCM-41在苯羟基化反应中催化性能的影响[J].催化学报,2008(04):385-390. |
| [10] | Vasconcellos-Dias M;Nunes C D;Vaz P D;Ferreira P,Brandao P,Félix V,Calhorda M J .[J].Journal of Catalysis,2008,256:301. |
| [11] | 袁志庆,蔡晔,慎炼,陈银飞,刘华彦,葛忠华.钒硅中孔分子筛的合成、表征及其催化性能研究[J].高校化学工程学报,2002(02):145-148. |
| [12] | Zhang WH.;Lu JQ.;Han B.;Li MJ.;Xiu JH.;Ying PL.;Li C. .Direct synthesis and characterization of titanium-substituted mesoporous molecular sieve SBA-15[J].Chemistry of Materials,2002(8):3413-3421. |
| [13] | 马乾志,郭杨龙,王艳芹,郭耘,张志刚,卢冠忠.含MEI结构单元的介孔Ti-HMS-1的合成、表征及催化氧化性能[J].无机材料学报,2007(05):943-948. |
| [14] | Kresge C T;Leonowicz M E;Roth W J;Vartuli J C,Beck J S .[J].Nature,1992,359:710. |
| [15] | Hu Y;Martra G;Zhang J L;Higashimoto S,Coluccia S,Anpo M .[J].Journal of Physical Chemistry B,2006,110:1680. |
| [16] | 于大勇.超微粒介孔分子筛Ti-MCM-41的制备及苯乙烯的催化氧化[J].精细石油化工进展,2003(05):35-36,40. |
| [17] | Kong Y;Guo X F;Zhang F M;Jiang S Y,Wang J,Lu Y N,Yan Q J .[J].Materials Letters,2005,59:3099. |
| [18] | Beck J S;Vartuli J C;Roth W J;Leonowicz M E,Kresge C T,Schmitt K D,Chu C T W,Olson D H,Sheppard E W,Mccullen S B,Higgins J B,Schlenker J L .[J].Journal of the American Chemical Society,1992,114:10834. |
| [19] | Yuan Y Zh;Cao W;Weng W Zh .[J].Journal of Catalysis,2004,228:311. |
| [20] | Brunauer S;Deming L S;Deming W E;Teller E .[J].Journal of the American Chemical Society,1940,62:1723. |
| [21] | Wu C;Kong Y;Gao F;Wu Y,Lu Y N,Wang J,Dong L .[J].Microporous and Mesoporous Materials,2008,113:163. |
| [22] | Kumar SB.;Pais GCG.;Kumar P.;Kumar R.;Mirajkar SP. .EPOXIDATION OF STYRENE OVER A TITANIUM SILICATE MOLECULAR SIEVE TS-1 USING DILUTE H2O2 AS OXIDIZING AGENT[J].Journal of Catalysis,1995(1):163-166. |
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%