Coal-Hydrogenation Vapor-Phase Catalysts

摘要: Publisher Summary This chapter describes coal-hydrogenation vapor-phase catalysts. Coal hydrogenation refers to the addition of hydrogen coal and oils derived from or other sources combined with cracking raw material. The first successful attempt add was undertaken by Berthelot. use nascent hydriodic acid at 270°C gave 60% weight as oil. A fundamental improvement is achieved division process into two stages—namely, (1) liquid-phase (2) hydrogenation. two-stage for tar proves useful also petroleum oils. in liquid phase, aided catalysts, developed commercially stage an integrated fuels-production which middle oil produced. Tungsten disulfide a bluish-black substance density 7.5, crystallizes hexagonal system. It stable absence oxidizing agents temperatures up 1100°C, but higher temperatures, it decomposes sulfur evolution.