| Nano-Crystalline Metastable and Stable Carbides of Molybdenum for Hydrogenation/Dehydrogenation Reactions | ||
| Christopher H. Clark1, Edwin L. Kugler1, Jonathan C. Hanson2, Zhen Song2, Tanhong Cai2, Jan Hrbek2, James H. Wright1 and Dady B. Dadyburjor1, (1)West Virginia University, Department of Chemical Engineering, Morgantown, WV 26506-6102, (2)Brookhaven National Laboratory, US Department of Energy, Upton, NY 11973-5000 MoCx has been shown to have the H/DH properties of noble-metal catalysts, but at a lower cost. Current preparation techniques for the carbides, high-temperature reduction in the presence of methane and hydrogen, are effective but inconvenient, and result in particles of relatively large size. A novel, simpler procedure yields 3nm-sized particles of more uniform size. Variation of the procedure results in either metastable MoC or stable MoC2. The particle size can also be altered, so that size-selectivity principles can be used in catalyst design. The reactivity of these catalysts has been examined with respect to that of Pt/alumina. Extended Abstract Status: Not Uploaded | ||