BRIDGE Publications

Steady-state rates of carbon formation on a silica-supported nickel catalyst exposed to CH4 + H2 gas mixtures have been measured for a range of gas compositions (partial pressure of methane, 20-80 kPa, and of hydrogen, 5-15 kPa) and temperatures in the range 723-863 K. The data are used to test various kinetic models suggested previously in the literature. It is shown that the data are in conflict with previous suggestions that the rate is, at a given temperature, solely a function of the carbon activity of the gas, but compatible with a kinetic model based on the elementary steps suggested by ...

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