ANALYSIS OF THE CATALYST OF THE MEDIUM-TEMPERATURE CONVERSION OF CARBON MONOXIDE BY WATER VAPOR

Abstract

The work is devoted to the investigation of the iron-chromium catalyst, which is used at the stage of medium-temperature conversion of carbon monoxide by steam in large-capacity ammonia and hydrogen production. S brand catalyst was chosen аs the object for research. Literature data on the properties of this object are absent. In carrying out the work, such research methods as X-ray phase, synchronous thermal and laser analysis, scanning electron spectroscopy, gas chromatography, and the method of low-temperature adsorption-desorption of nitrogen were used. It is shown that, in addition to the main components (Fe, Cr, Cu) the catalyst contains promoters (Ca, Mn) in the form of compounds in the nanodispersed X-ray diffraction phase.The investigated catalyst has a rather developed specific surface, which is 96.4 ± 0.5 m2/g. By processing nitrogen adsorption-desorption isotherms, it has been found that there are no micro- and macropores in the sample, and the available mesopores have sizes from 3 to 15 nm. The catalytic activity of the sample was evaluated by the degree of CO conversion in the catalytic high-pressure unit PKU-2. The maximum degree of CO conversion is reached 91% at 360 °C. Analysis of the steam condensate formed during the conversion revealed the presence of methyl acetate, methanol, ethanol, butanol in it. The results of the work performed can be used to develop new, more efficient, catalytic systems for the process of medium-temperature conversion of carbon monoxide by steam. For citation: Rumyantsev R.N., Lebedev M.A., Popov D.S., Il’in A.A., Uzhevskaya U.S., Il’in A.P. Analysis of catalyst of medium-temperature conversion of carbon monoxide by water vapor. Izv. Vyssh. Uchebn. Zaved. Khim. Khim. Tekhnol. 2018. V. 61. N 9-10. P. 83-88