使用共沉淀法制备了担载量很高的Ni/Al2O3催化剂,通过正丁醇干燥处理,提高了催化剂的表面积和担载镍的分散度.实验发现,镍的担载量和干燥过程刘催化剂的表面积、孔结构及金属镍的还原度和分散度影响很大.经过正丁醇处理的80%Ni/Al2O3-B催化剂具有较高的表面积,而担载镍的还原度和分散度也显著提高,使得催化剂具有很高的活性金属镍表面积(90m2/g-催化剂),该催化剂对甲苯有较强的吸附作用,在甲苯和苯酚的芳环加氢反应中表现出了很高的催化活性.
Highly loaded and dispersed Ni/Al2O3-B catalysts were prepared by the co-precipitation method with an n-butanol drying process.The loading of nickel and drying process were found to be the two key factors in determining the surface area and pore structures of catalysts as well as the reducibility and dispersion of supported nickel. The 80%Ni/Al2O3-B treated with n-butanol during the drying process exhibited the high surface area and high reducibility and dispersion of supported nickel, leading to the high active nickel surface area (90 m2/g-catalyst). It adsorbed toluene strongly and thus exhibited high activity for the hydrogenation of aromatic rings in toluene and phenol.
参考文献
| [1] | Suh DJ.;Kim JH.;Kim KL.;Park TJ. .Nickel-alumina aerogel catalysts prepared by fast sol-gel synthesis[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,1998(1):168-172. |
| [2] | Tang S.;Lin J.;Zeng HC.;Tan KL.;Li K.;Ji L. .CO2 reforming of methane to synthesis gas over sol-gel-made Ni/gamma-Al2O3 catalysts from organometallic precursors[J].Journal of Catalysis,2000(2):424-430. |
| [3] | Krompiec S.;Mrowiec-Bialon J.;Skutil K.;Dukowicz A.;Pajak L. Jarzebski AB. .Nickel-alumina composite aerogel catalysts with a high nickel load: a novel fast sol-gel synthesis procedure and screening of catalytic properties[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,2003(3):297-303. |
| [4] | Quincoces C E;Basaldella E I;Vargas S P D;González M G .[J].Materials Letters,2004,58:272. |
| [5] | Narayanan S.;Vishwanathan V.;Unnikrishnan R. .NICKEL-ALUMINA PREPARED BY CONSTANT AND VARYING PH METHOD - EVALUATION BY HYDROGEN-OXYGEN CHEMISORPTION AND ANILINE HYDROGENATION[J].Applied Catalysis, A. General: An International Journal Devoted to Catalytic Science and Its Applications,1995(1):9-19. |
| [6] | Narayanan S;Unnikrishnan R .[J].Applied Catalysis A:General,1996,145:231. |
| [7] | Molina R;Poncelet G .[J].Journal of Catalysis,2001,199:162. |
| [8] | Canning A S;Jackson S D;Mitchell S .[J].Catalysis Today,2006,114:372. |
| [9] | Monteiro-Gezork A C A;Effendi A;Winterbottom J M .[J].Catalysis Today,2007,128:63. |
| [10] | Savva P G;Goundani K;Vakros J;Bourikas K Fountzoula C Vattis D Lycourghiotis A Kordulis C .[J].Applied Catalysis B:Environmental,2008,79:199. |
| [11] | Meng, X.;Cheng, H.;Akiyama, Y.;Hao, Y.;Qiao, W.;Yu, Y.;Zhao, F.;Fujita, S.-i.;Arai, M. .Selective hydrogenation of nitrobenzene to aniline in dense phase carbon dioxide over Ni/γ-Al_2O_3: Significance of molecular interactions[J].Journal of Catalysis,2009(1):1-10. |
| [12] | Li F;Yi X D;Fang W P .[J].Catalysis Letters,2009,130:335. |
| [13] | Li F;Yi X D;Zheng J B;Jin H Fang W P .[J].Catalyst Communication,2009,11:266. |
| [14] | Yang R;Li X;Wu J;Zhang X Zhang Z Cheng Y Guo J .[J].Applied Catalysis A:General,2009,368:105. |
| [15] | Grzechowiak JR.;Szyszka I.;Rynkowski J.;Rajski D. .Preparation, characterisation and activity of nickel supported on silica-titania[J].Applied Catalysis, A. General: An International Journal Devoted to Catalytic Science and Its Applications,2003(2):193-206. |
| [16] | Masalska A .[J].Applied Catalysis A:General,2005,294:260. |
| [17] | Szegedi, A;Popova, M;Mavrodinova, V;Urban, M;Kiricsi, I;Minchev, C .Synthesis and characterization of Ni-MCM-41 materials with spherical morphology and their catalytic activity in toluene hydrogenation[J].Microporous and Mesoporous Materials,2007(1/2):149-158. |
| [18] | Fajardie F.;Djegamariadassou G.;Blanchard G.;Tempere JF. .BENZENE HYDROGENATION AS A TOOL FOR THE DETERMINATION OF THE PERCENTAGE OF METAL EXPOSED ON LOW LOADED CERIA SUPPORTED RHODIUM CATALYSTS[J].Journal of Catalysis,1996(1):77-86. |
| [19] | Rogemond E.;Frety R.;Perrichon V.;Primet M.;Mathis F.;Essayem N. .CHARACTERIZATION OF MODEL THREE-WAY CATALYSTS .1. DETERMINATION OF THE ACCESSIBLE METALLIC AREA BY CYCLOHEXANE AROMATIZATION ACTIVITY MEASUREMENTS[J].Journal of Catalysis,1997(2):229-235. |
| [20] | Chupin J;Gnep N S;Lacombe S;Guisnet M .[J].Applied Catalysis A:General,2001,206:43. |
| [21] | Shin EJ.;Keane MA. .Catalytic hydrogen treatment of aromatic alcohols[J].Journal of Catalysis,1998(2):450-459. |
| [22] | Shin E J;Keane M A .[J].Industrial and Engineering Chemistry Research,2000,39:883. |
| [23] | Li C;Chen Y .[J].Thermochimica Acta,1995,256:457. |
| [24] | Li G;Hu L;Hill J M .[J].Applied Catalysis A:General,2006,301:16. |
| [25] | Vos B.;Bliek A.;Poels E. .Impact of calcination conditions on the structure of alumina-supported nickel particles[J].Journal of Catalysis,2001(1):77-88. |
| [26] | Liu X;Khinast J G;Glasser B J .[J].Industrial and Engineering Chemistry Research,2010,49:2649. |
| [27] | González-Marcos M P;Gutiérrez-Ortiz J I;González-Ortiz de Elguea C;Delgado J A González-Velasco J R .[J].Applied Catalysis A:General,1997,162:269. |
| [28] | Ermakova M A;Ermakov D Y .[J].Applied Catalysis A:General,2003,245:277. |
| [29] | Wang B;Zhang W .[J].Drying Technology,2005,23:7. |
| [30] | Shan H;Zhang Z .[J].Journal of the European Ceramic Society,1997,17:713. |
| [31] | Hu ZS.;Chen GX.;Dong JX. .Replacing solvent drying technique for nanometer particle preparation[J].Journal of Colloid and Interface Science,1998(2):367-372. |
| [32] | Chen H;Xue M;Shen J .[J].Catalysis Letters,2010,135:246. |
| [33] | Bartholomew C H;Farrauto R J .[J].Journal of Catalysis,1976,45:41. |
| [34] | Mustard D G;Bartholomew C H .[J].Journal of Catalysis,1981,67:186. |
| [35] | Pannell R B;Chung K S;Bartholomew C H .[J].Journal of Catalysis,1977,46:340. |
| [36] | Smith J S;Thrower PA;Vannice M A .[J].Journal of Catalysis,1981,68:270. |
| [37] | Medina F;Dutartre R;Tichit D;Coq B Dung N T Salagre P Sueiras J E .[J].Journal of Molecular Catalysis A:Chemical,1997,119:201. |
| [38] | Lin S D;Vannice M A .[J].Journal of Catalysis,1993,143:563. |
| [39] | Hu S;Xue M;Chen H;Shen J .[J].Chemical Engineering Journal,2010,162:371. |
| [40] | Coleman L J I;Epling W;Hudgins R R;Croiset E .[J].Applied Catalysis A:General,2009,363:52. |
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%