METHANATION OF LOW-CONCENTRATION CARBON MONOXIDE FEEDS OVER RUTHENIUM

The methanation of carbon monoxide at parts per million levels was studied over 0.5% ruthenium metal catalyst, dispersed on alumina catalyst in a fixed-bed reactor. Gas mixtures of 3450, 1090, and 505 p.p.m. carbon monoxide in hydrogen were used. The rate of reaction of carbon monoxide follows simple pseudo-first-order kinetics. The rate constant follows the Arrhenius temperature dependence at low temperatures. Evidence of diffusion control of the reaction rate was found in the higher temperature regions investigated. © 1969, American Chemical Society. All rights reserved.