Reaction process between zinc oxide 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 ZnO and carbon in a SO<SUB>2</SUB> stream at various temperatures were examined. The possible reactions during the above process were also examined. When a mixture of ZnO and carbon was heated in a SO<SUB>2</SUB> stream, the formation of ZnS was observed above 600 °C. At 800 °C, all the ZnO used was converted to ZnS. Sulfur was also obtained outside the heating zone, and its amount increased markedly above <I>ca.</I> 750 °C. The ZnS formed was a mixture of α-ZnS and β-ZnS regardless of the reaction temperature. The process of formation of ZnS can be represented as follows: the reaction between carbon and SO<SUB>2</SUB> occurs at first to form sulfur. Above <I>ca.</I> 600 °C, the reaction between ZnO and the sulfur occurs to form ZnS. In addition to these reactions, the reduction of ZnO with carbon occurs slightly to form zinc, which then reacts with sulfur to form ZnS.

• 公益社団法人 日本化学会の論文

著者

• Yajima Akimasa

  Research Laboratory of Resources Utilization, Tokyo Institute of Technology

• Saeki Yuzo

  Research Laboratory of Resources Utilization, Tokyo Institute of Technology

• Matsuzaki Ryoko

  Research Laboratory of Resources Utilization, Tokyo Institute of Technology

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