Coal liquefaction using Mo plate catalysts.
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概要
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The catalytic activity and mechanism of Mo plate catalysts for coal liquefaction were investigated using a 115m<I>l</I> autoclave. Mo plate catalysts were Mo metal plate, SUS-304 plate coated Mo by apparatus of ion plating (Mo ion plating plate) and the pre-sulfided plates of both metal and ion plating. The observation of surfaces of these plates before and after coal liquefaction, the behavior of accumulation of mineral in coal on the plates and the behavior of corrosion were carried out by scanning electron microscopy and scanning Auger microscopy.<BR>In the range of high reaction temperature (over 450°C), the order of the catalytic activity based on conversion and oil yield was Co-Mo S> red mud+S≅presulfided Mo ion plating plate+S>pre-sulfided Mo metal plate+S> Mo ion plating plate+S ≅ pre-sulfided Mo ion plating plate> Mo ion plating plate ≅ pre-sulfided Mo metal plate ≅ no catalyst. It was thought that the catalytic activity of Mo ion plating plate was higher than that of Mo metal plate because the surface of the former plate had more defects than that of the latter plate. The mechanism of catalytic action of Mo plate was interpreted on the basis of hole carrier density.<BR>Although Mo ion plating plate showed higher catalytic activity than Mo metal plate, the both plates had the same effect to prevent accumulation of mineral in coal on its surface and corrosion by hydrogen sulfide.<BR>From these results, it was found that Mo was a excellent material for coal Liquefaction reactor.
- 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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