FORMATION OF MOLYBDENUM DISULFIDE BY THE REACTION BETWEEN MOLYBDENUM TRIOXIDE AND SULFUR DIOXIDE IN THE PRESENCE OF CARBON.

Article abstract of DOI:10.1246/bcsj.54.3759

The reaction products obtained by heating a mixture of MoO//3 and carbon in a SO//2 stream at various temperatures were examined. The possible reactions during the above process were also studied. Further, thermodynamical consideration was made of the formation of MoS//2. When a mixture of MoO//3 and carbon was heated in a SO//2 stream, MoO//2 was formed above 400 degree C. At 500-550 degree C, the formation of a small amount of Mo//4O//1//1 was also observed. Above 700 degree C, the formation of MoS//2 in addition to MoO//2 was observed, and MoS//2 alone was obtained at 1000 degree C. Sulfur was obtained outside the heating zone throughout the temperature range in this experiment. The process of the formation of MoS//2 by the reaction between MoO//3 and SO//2 in the presence of carbon can be represented as follows: The reaction between carbon and SO//2 occurs at first to form sulfur.