In order to obtain more information required for the catalytic conversion of methane, the interaction of methane and ethylene with various supported metal catalysts was investigated. The metals used were Ni, Fe, Co, Mo, Ru, Rh, Pd, Re, Ir, and Pt, all supported on $\rm Al\sb2O\sb3.$ Silica supported nickel was also used. The technique of temperature programmed reaction was mainly used. This method gives temperatures at which the adsorption and/or the reaction of a gas starts to occur. The present results showed wide differences in the interaction of methane or ethylene with each catalyst. The isothermal reaction of methane was also carried out in order to further investigate the behaviour of the CH$\sb{\rm n}$ species which were formed upon the chemisorption of methane. As a process for converting methane to higher hydrocarbons, the catalytic coupling of methane with ethylene (CH$\sb4$ + $\rm C\sb2H\sb4\to C\sb3H\sb8$) was examined by using the catalysts listed above. At 250 and 350$\sp\circ$C, no propane was produced on any of the catalysts, except for alumina supported platinum. A trace of propane was found in this case for the reaction at 250$\sp\circ$C. The results were discussed based on the interaction of the reactants with these metals as revealed by the temperature programmed reactions.
| Identifer | oai:union.ndltd.org:uottawa.ca/oai:ruor.uottawa.ca:10393/7805 |
| Date | January 1991 |
| Creators | Brimacombe, Lyn M. |
| Publisher | University of Ottawa (Canada) |
| Source Sets | Université d’Ottawa |
| Detected Language | English |
| Type | Thesis |
| Format | 97 p. |
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