Dynamic kinetics of methanol synthesis over a commercial copper-based catalyst

Adsorption, surface reaction and process dynamics on the surface of a comme rcial copper-based catalyst for methanol synthesis from CO/CO2/H-2 were sys tematically studied by means of temperature programmed desorption (TPD), te mperature programmed surface reaction (TPSR), in-situ Fourier transform-inf erred spectroscopy(FTIR) and stimulus-response techniques. As a part of res ults, an elementary step sequence was suggested and a group of ordinary dif ferential equations (ODEs) for describing transient conversations relevant to all species on the catalyst surface and in the gas phase in a micro-fixe d-bed reactor was derived. The values of the parameters referred to dynamic kinetics were estimated by fitting the solution of the ODEs with the trans ient response data obtained by the stimulus-response technique with a FTIR analyzer as an on-line detector.