Study of reactions over sulfide catalysts in CO-CO2-H-2-H2O system

MoS2 is a valuable sulfur tolerant catalyst widely used in hydrotreating pr ocesses and the water-gas shift reaction (WGSR). The product distribution s trongly depends on the composition of the catalyst and reaction condition a s well. For the sake of demonstrating the effect of promoters and carriers on the reactivity, three interrelated reactions, WGSR, methanation and meth anol synthesis are taken as the models. They have the reactants CO and H2O or H-2 in common. In fact, in the presence of MoS2, they turn to become a s ystem of CO-H2O-H-2-CO2. The: variation of products will be shown and discu ssed in this paper by incorporating potassium and/or Co into the supported MoS2 with gamma-Al2O3 or Other carriers. (C) 1999 Elsevier Science B.V. All rights reserved.