以硫代乙酰胺为硫源,钼酸钠为钼源,乙醇为分散剂,采用化学沉积法制备了MoS3/Al2O3催化剂前驱体,再用H2高温处理得到高分散硫化型MoS2/γ-Al2O3催化剂,运用N2吸附-脱附、X射线光电子能谱以及高分辨透射电子显微镜等技术对MoS2/γ-Al2O3催化剂进行了表征,并以二苯并噻吩作为模型化合物评价了催化剂的加氢脱硫(HDS)活性.结果表明,与浸渍法相比,所制催化剂具有更大的比表面积和孔体积、更高的活性金属分散度、更佳的Mo物种硫化度以及更短的MoS2片层长度和更高的堆积度,因而在二苯并噻吩HDS反应中表现出远优于浸渍法所制催化剂的活性.乙醇可通过S...H-O氢键吸附至MoS3纳米粒子表面,可有效防止其生长和团聚,起到分散剂的作用.
参考文献
| [1] | Breysse M;Geantet C;Afanasiev P;Blanchard J Vrinat M .[J].Catalysis Today,2008,130:3. |
| [2] | Wang H;Fan Y;Shi G;Liu HY;Bao XJ .Preparation of hydrotreating catalysts via an oxalic acid-assisted hydrothermal deposition method[J].Journal of Catalysis,2008(1):119-127. |
| [3] | Lauritsen J V;Kibsgaard J;Olesen G H;Moses P G Hinnemann B Helveg S N6rskov J K Clausen B S Tops(O)e H Laegsgaard E Besenbacher F .[J].Journal of Catalysis,2007,249:220. |
| [4] | Candia R;S(o)rensen O;Villadsen J;Tops(o)e N Y Clausen B S Tops(o)eH .[J].Bulletin des Societes Chimiques Belgium,1984,93:763. |
| [5] | Prins R;De Beer V H J;Somorjai G A .[J].CATALYSIS REVIEWS-SCIENCE AND ENGINEERING,1989,31:1. |
| [6] | Fan Y;Xiao H;Shi G;Liu H Y Bao X J .[J].Energy Environ Sci,2011,4:572. |
| [7] | Han W;Yuan P;Fan Y;Shi G Liu H Y Bai D J Bao X J .[J].Journal of Materials Chemistry,2012,22:25340. |
| [8] | Van Veen J A R;Hendriks P A J M;Romers E J G M;Andrea R R .[J].JPhy Chem,1990,94:5275. |
| [9] | Texier S;Berhault G;Pérot G;Harlé V Diehl F .[J].Journal of Catalysis,2004,223:404. |
| [10] | Carrier X;Lambert J F;Che M .[J].Journal of the American Chemical Society,1997,119:10137. |
| [11] | Plazenet G;Payen E;Lynch J;Rebours B .[J].Journal of Physical Chemistry B,2002,106:7013. |
| [12] | Zhang J W;Ling F X;Sun W F;Fang X C Li R F .[J].Chem Ind Eng Prog,2006,25:397. |
| [13] | Hu K;Hu X;Xu Y;Sun J .[J].Journal of Materials Science,2010,45:2640. |
| [14] | Diaz G;Luna R;Rios-Jara D;Ba(n)os L .[J].Catalysis Letters,1990,7:377. |
| [15] | Liu B;Chai Y M;Wang Y J;Liu Y Q Liu C G .[J].Journal of Natural Gas Chemistry,2012,21:194. |
| [16] | Wu Z;Wang D;Sun A .[J].Journal of Materials Science,2010,45:182. |
| [17] | Afanasiev P.;Bezverkhy I. .Synthesis of MoSx (5 > x > 6) amorphous sulfides and their use for preparation of MoS2 monodispersed microspheres[J].Chemistry of Materials,2002(6):2826-2830. |
| [18] | Nath M.;Rao CNR.;Govindaraj A. .Simple synthesis of MoS2 and WS2 nanotubes[J].Advanced Materials,2001(4):283-286. |
| [19] | Chianelli R R;Ruppert A F;José Yácaman M;Vázquez-Zavala A .[J].Catalysis Today,1995,23:269. |
| [20] | Hensen E J M;de Beer V H J;van Veen J A R;van Santen R A .[J].Catalysis Letters,2002,84:59. |
| [21] | Qiu L;Xu G .[J].Appl Sur fSci,2010,256:3413. |
| [22] | 刘希尧.工业催化剂分析测试表征[M].北京:中国石化出版社,1993:236. |
| [23] | Yin H L;Zhou T N;Liu Y Q;Chai Y M Liu C G .[J].Journal of Natural Gas Chemistry,2011,20:441. |
| [24] | Klimova T;Calderón M;Ramírez J .[J].Applied Catalysis A:General,2003,240:29. |
| [25] | Berhault G;Perez De la Rosa M;Mehta A;Yácaman M J Chianelli RR .[J].Applied Catalysis A:General,2008,345:80. |
| [26] | Liang K S;Cramer S P;Johnston D C;Chang C H Jacobson A J de-Neufville J P Chianelli R R .[J].J Non-CrystSolids,1980,42:345. |
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%