The formation of molybdenum disulfide by the reaction between molybdenum trioxde and sulfur dioxide in the presence of carbon.
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概要
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The reaction products obtained by heating a mixture of MoO<SUB>3</SUB> and carbon in a SO<SUB>2</SUB> 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<SUB>2</SUB>. When a mixture of MoO<SUB>3</SUB> and carbon was heated in a SO<SUB>2</SUB> stream, MoO<SUB>2</SUB> was formed above 400 °C. At 500–550 °C, the formation of a small amount of Mo<SUB>4</SUB>O<SUB>11</SUB>was also observed. Above 700 °C, the formation of MoS<SUB>2</SUB> in addition to MoO<SUB>2</SUB> was observed, and MoS<SUB>2</SUB> alone was obtained at 1000 °C. Sulfur was obtained outside the heating zone throughout the temperature range in this experiment. The process of the formation of MoS<SUB>2</SUB> by the reaction between MoO<SUB>3</SUB> and SO<SUB>2</SUB> in the presence of carbon can be represented as follows: The reaction between carbon and SO<SUB>2</SUB> occurs at first to form sulfur. Above <I>ca.</I> 400 °C, the reductions of MoO<SUB>3</SUB> with carbon and with sulfur occur to form MoO<SUB>2</SUB>. Above <I>ca.</I> 700 °C, MoS<SUB>2</SUB> is formed by the reaction between MoO<SUB>2</SUB> and sulfur, which are formed by the above reactions.
- 公益社団法人 日本化学会の論文
著者
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Yajima Akimasa
Research Laboratory of Resources Utilization, Tokyo Institute of Technology
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Eguchi Motonori
Research Laboratory of Resources Utilization, Tokyo Institute of Technology
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Saeki Yuzo
Research Laboratory of Resources Utilization, Tokyo Institute of Technology
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Matsuzaki Ryoko
Research Laboratory of Resources Utilization, Tokyo Institute of Technology
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