A dissertation submitted to the Faculty of Engineering, University of the
Witwatersrand, Johannesburg, in fulfilment of the requirements for the degree
of Masters of Science in Engineering. / The partial oxidation of methane by air to synthesis gas over supported cobalt
catalysts was studied. The investigation included analysis of the products of
this reaction at various temperatures, and of the structure of the catalysts
using powder X-ray diffraction techniques. The most effective catalyst for this
reaction was found to be metallic cobalt supported on rhombohedral alumina
(prepared as lO%Co/C/'r-A103)' In the presence of this catalyst 96% of tile
feed was completely converted to synthesis gas (CO: 2H2) at lOOO°C. This
catalyst showed no evidence of coking or loss of activity at lOfO°C over a
period of 180 hours. The reaction mechanism is thought to occur in two stages
over two distinct zones of the catalyst, Complete reaction of O2 with CH4 to
form CO2 and H20 is followed, in the second stage, by reforming and the water
gas shift reaction to produce synthesis gas. / Andrew Chakane 2018
| Identifer | oai:union.ndltd.org:netd.ac.za/oai:union.ndltd.org:wits/oai:wiredspace.wits.ac.za:10539/25467 |
| Date | January 1995 |
| Creators | Jeannot, John Charl |
| Source Sets | South African National ETD Portal |
| Language | English |
| Detected Language | English |
| Type | Thesis |
| Format | application/pdf |
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