将等体积浸渍法制备的Ni/SiO2催化剂应用于间二硝基苯液相加氢制间苯二胺反应中,通过BET,XRD,TEM,TPR,H2-TPD和活性评价等方法对催化剂的物化性质及催化性能进行了研究,考察了镍含量对催化剂活性的影响. 结果表明,Ni/SiO2催化剂不仅具有很高的催化活性,而且对间苯二胺表现出很高的选择性; 催化剂的活性随着镍含量的不同而有所变化. 当w(Ni)＜20%时,随着镍负载量的增加,催化剂的活性逐渐升高,而当w(Ni)≥20%时,催化剂的活性和选择性基本趋于稳定. 影响催化剂活性及选择性的主要因素是催化剂的活性比表面积.
参考文献
| [1] | 魏文德.有机化工原料大全[M].北京:化学工业出版社,1999:800. |
| [2] | 杨胜强.[J].广东化工,1998(03):29. |
| [3] | Yu Zh K;Liao Sh J;Xu Y;Yang B,Yu D R .[J].Journal of Molecular Catalysis A:Chemical,1997,120(1-3):247. |
| [4] | Mizuta H;Nishimura T;Wada M;Nagata T .[P].JP 05/331 113,1993. |
| [5] | Mizuta H;Nishimura T;Wada M;Nagata T .[P].JP 06/009 511,1994. |
| [6] | Pawelec B;Daza L;Fierro J L G;Anderson J A .[J].Applied Catalysis A:General,1996,145:307. |
| [7] | Rautanen P A;Aittamaa J R;Krause A O I .[J].Chemical Engineering Science,2001,56(04):1247. |
| [8] | Suh DJ.;Lee SH.;Kim KL.;Park TJ. .Nickel-alumina composite aerogels as liquid-phase hydrogenation catalysts[J].Journal of Non-Crystalline Solids: A Journal Devoted to Oxide, Halide, Chalcogenide and Metallic Glasses, Amorphous Semiconductors, Non-Crystalline Films, Glass-Ceramics and Glassy Composites,2001(1/3):309-316. |
| [9] | Gonzalez-Marcos M P;Gutierrez-Ortiz J I;Gonzalez-Ortiz de Elguea C;Delgado J A,Gonzalez-Velasco J R .[J].Applied Catalysis A:General,1997,162:269. |
| [10] | Diskin A M;Cunningham R H;Ormerod R M .[J].Catalysis Today,1998(46):147. |
| [11] | Zhang L F;Lin J F;Chen Y .[J].Journal of the Chemical Society,Faraday Transactions,1992,88(02):497. |
| [12] | Matsumura Y.;Tode N.;Yazawa T.;Haruta M.;Tanaka K. .Catalytic methanol decomposition to carbon monoxide and hydrogen over nickel supported on silica[J].Journal of molecular catalysis, A. Chemical,2000(1/2):157-165. |
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%