CATL 30 |
| Gheorghy P. Vissokov, Institute of Electronics, Institute of Electronics, Bulgarian Academy of Sciences, Sofia, Bulgaria and Gheorghi P. Vissokov, Institute of Electronics, Bulgarian Academy of Sciences, 72 Tzarigradsko Chaussee Blvd, 1784 Sofia, Bulgaria. |
| The conditions and the process parameters of the plasma-chemical synthesis and/or regeneration of catalysts for low-temperature steam conversion of CO under the conditions of electric-arc low-temperature plasma have been investigated, as depending on the plasma-chemical process parameters and the plasma-chemical reactors (PCR) type [with “cold walls” (CW) or “warm walls” (WW)], samples that have the following properties were obtained: specific surface - up to 56 m2/g; particle sizes - 10 to 60 nm, in some cases - up to 200 nm; faulty crystal lattice structure; phases of ZnO, CuO, Cu2O and CuAl2O4. The temperature from 2000 to 3800 K was experimentally provided as the optimal temperature range in the PCR for synthesis of samples with maximum dispersity and catalytic activity. A complex physicochemical analysis of the plasma-chemically synthesized and/or regenerated samples by the following methods was performed: X-ray diffraction patterns, electron-microscope, chemical and other analyses; as their activities were defined by using a model gas simulating the industrial one for temperatures and a volume rate of the steam-gas mixture similar to those used in the industrial process of low-temperature steam conversion of CO. |
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Plasma Technology and Catalysis
1:30 PM-4:45 PM, Tuesday, March 25, 2003 Convention Center -- Room 342, Oral
Catalysis & Surface Science Secretariat |