Iron sulfide catalyst deposited on Wandoan coal. I. Conversions and hydrogen consumption efficiency.:Conversions and Hydrogen Consumption Efficiency
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概要
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The utility of iron sulfide catalyst on coal liquefaction is widely recognized recently, because of its low corrosive activity and cost. But generally, iron sulfied catalyst has little surface area and this makes the catalysis activity relatively lower. So it is very important to increase the surface area of iron sulfide for catalyst preparation. Recently, this kind of works using red mud as iron sulfide source, crushed coal and iron sulfide at the same time, or penetrating FeSO<SUB>4</SUB> into coal using ion-exchange function of coals are often reported. In this report, Wandoan coal was added to aqueous solution of FeCl<SUB>3</SUB> and (NH<SUB>3</SUB>) <SUB>2</SUB>S was added slowly to sulfrize Fe (III) ion (deposited iron sulfide catalyst). Successive electron-microscopic observation revealed that coal was wrapped in iron sulfied. Direct hydrogenation of the coal was conducted at 400°C for 60 min.(initial hydrogen pressure 8.7 MPa). The conversion and hydrogen consumption by deposited iron sulfide catalyst were compared with other three usual catalysts (iron sulfide powder, Ni-Mo/Al<SUB>2</SUB>O<SUB>3</SUB> and ZnCl<SUB>2</SUB>) under the same conditions. The conversions (2% catalyst to Wandoan coal) decreased in the order, Ni-Mo/Al<SUB>2</SUB>O<SUB>3</SUB>>deposited catalyst>ZnCl<SUB>2</SUB>>iron sulfide powder. Hydrogen consumption efficiency on Wandoan coal liquefaction decreased in the order, iron sulfide powder ≅ deposited iron sulfide>Ni-MO/Al<SUB>2</SUB>O<SUB>3</SUB>>ZnCl<SUB>2</SUB>. The deposited catalyst showed an excellent activity for Wandoan coal conversions next to Ni-Mo/Al<SUB>2</SUB>O<SUB>3</SUB> and a high hydrogen consumption efficiency.
- 一般社団法人 日本エネルギー学会の論文
一般社団法人 日本エネルギー学会 | 論文
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