通过Mo(CO)6的热分解制备了Al2O3薄膜负载的金属钼模型催化剂,并采用热脱附谱(TDS)和X射线光电子能谱(XPS)原位研究了CO在金属态Mo/Al2O3模型催化剂表面的化学吸附.结果表明,在低温下CO可与Al2O3表面的金属钼纳米粒子发生多重配位形成类似于羰基钼的物种.CO在Mo/Al2O3模型催化剂表面的吸附导致Mo 3d XPS峰向高结合能方向位移,所生成的羰基钼物种表现为TDS谱中在240 K处有脱附峰.负载的金属钼模型表面与体相金属钼的化学性质完全不同,表现出明显的粒子尺寸效应.
参考文献
| [1] | Cox A J;Louderback J G;Bloomfield L A .[J].Physical Review Letters,1993,71(06):923. |
| [2] | Haruta M .[J].Catalysis Today,1997,36(01):153. |
| [3] | Baumer M;Frank M;Libuda J .[J].Surface Science Spectra,1997,391(1-3):204. |
| [4] | El-Yakhloufi M H;Gillet E .[J].Catalysis Letters,1993,17(1-2):11. |
| [5] | Zama K.;Fukuoka A.;Ichikawa M.;Imada Y. .Propene metathesis reaction on di- and trinuclear molybdenum complexes grafted on mesoporous FSM-16 and silica - Structural characterization and their catalytic performances[J].Applied Catalysis, A. General: An International Journal Devoted to Catalytic Science and Its Applications,2000(Special Issue SI):285-296. |
| [6] | Handzlik J S;Stoch J;Ogonowski J .[J].Journal of Molecular Catalysis A:Chemical,2000,157(1-2):237. |
| [7] | Perez-Romo P;Potvin C;Manoli J M .[J].Journal of Catalysis,2002,208(01):187. |
| [8] | Li Y Zh;Fan Y N;Chen Y .[J].Catalysis Letters,2002,82(1-2):111. |
| [9] | 黄秀敏,徐奕德,申文杰.负载型MoOx和VOx催化剂上二甲醚选择氧化制甲醛反应[J].催化学报,2004(04):267-271. |
| [10] | Jiang Zh Q;Huang W X;Jiao J .[J].Applied Surface Science,2004,229(1-4):43. |
| [11] | Zaki M I;Vielhaber B;Knoezinger H .[J].Journal of Physical Chemistry,1986,90(14):3176. |
| [12] | Zaki M I;Knoezinger H .[J].Spectrochimica Acta,1987,43A(12):1455. |
| [13] | Diaz A L;Bussell M E .[J].Journal of Physical Chemistry,1993,97(02):470. |
| [14] | Leyrer J;Vielhaber B;Zaki M I .[J].Materials Chemistry and Physics,1985,13(3-4):301. |
| [15] | Braun S;Appel L G;Camorim V L .[J].Journal of Physical Chemistry B,2000,104(28):6584. |
| [16] | Guenther S;Marsi M;Kolmakov A .[J].Journal of Physical Chemistry B,1997,101(48):10004. |
| [17] | Mestl G.;Knozinger H. .Spreading of MoO3 on gamma-Al2O3 induced by mechanical activation[J].Langmuir: The ACS Journal of Surfaces and Colloids,1998(14):3964-3966. |
| [18] | Libuda J.;Baumer M.;Freund HJ.;Sandell A. .EVIDENCE FOR PD-X(CO)(Y) COMPOUND FORMATION ON AN ALUMINA SUBSTRATE[J].Chemical Physics Letters,1995(5-6):429-434. |
| [19] | Sandell A;Libuda J;Baeumer M .[J].Surface Science Spectra,1996,346(1-3):108. |
| [20] | Sandell A;Libuda J;Bruehwiler P .[J].Journal of Electron Spectroscopy and Related Phenomena,1995,76:301. |
| [21] | Wolter K.;Libuda J.;Kuhlenbeck H.;Baumer M.;Freund HJ.;Seiferth O. .IR SPECTROSCOPY OF A PD-CARBONYL SURFACE COMPOUND[J].Chemical Physics Letters,1997(5-6):513-520. |
| [22] | Wolter K;Seiferth O;Libuda J .[J].Surface Science Spectra,1998,402-404:428. |
| [23] | Frank M;Kuhnemuth R;Baeumer M .[J].Surface Science Spectra,1999,427-428:288. |
| [24] | Frank M;Kuhnemuth R;Baeumer M .[J].Surface Science Spectra,2000,454-456:968. |
| [25] | Suzuki A;Inada Y;Yamaguchi A .[J].Angewandte Chemie International Edition,2003,42(39):4795. |
| [26] | Frank M;Baeumer M;Kuehnemuth R .[J].Journal of Physical Chemistry B,2001,105(36):8569. |
| [27] | Fukui K-I;Aruga T;Iwasawa Y .[J].Surface Science Spectra,1993,281(03):241. |
| [28] | Rodriguez J A .[J].Surface Science Spectra,1994,303(03):366. |
| [29] | Rodriguez J A .[J].Surface Science Reports,1996,24(7-8):223. |
| [30] | Hammer B;Morikawa Y;Noerskov J K .[J].Physical Review Letters,1996,76(12):2141. |
| [31] | Rodriguez J A;Dvorak J;Jirsak T .[J].Surface Science Spectra,2001,490(03):315. |
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