Iron-molybdenum catalyst
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I would like to ask all the experts, is the role of the iron-molybdenum catalyst for organic sulfur hydrogenation or unsaturated hydrocarbon hydrogenation?
RSH+H2=RH+H2S RSR+2H2=RH+H2S C4H4S+4H2=C4H10+H2S CS2+4H2=CH4+2H2S COS+H2=CO+H2S C2H4+H2=C2H6 The above is the reaction principle of iron-molybdenum catalyst. It can be seen that it has hydrogenation effect on organic sulfur and unsaturated hydrocarbons. At the same time, there are side reactions such as methanation, carbon precipitation, and combustion. :)
Thanks! What I mean is what role does iron-molybdenum catalyst mainly use in coal chemical industry?
FTS has been studied more because of its cheap price.
For indirect liquefaction of coal, that is, indirect liquefaction of coal to produce oil, FT synthesis catalysts mainly include molybdenum and iron series. In terms of performance, molybdenum series catalysts may be superior, but considering the price, iron series catalysts are more widely used, including the current ones used by the Chinese Academy of Sciences Coalification.
Can you explain clearly the side reactions of hydrogenation? ? ? ? Thanks
Iron-molybdenum hydrogenation catalyst is used to hydrogenate organic sulfur and convert it into inorganic sulfur during the purification process of natural gas and coke oven gas. There are two types of catalysts: iron-molybdenum series and cobalt-molybdenum series. The effects are the same. The main differences are in price and life. The cobalt-molybdenum series is more expensive and has a longer life.
How are iron-based catalysts prepared?
The application of iron-molybdenum catalysts in coal gasification is mainly used for the shift of raw gas. Iron series is a high-temperature shift catalyst, but it has certain requirements for sulfur.
I got confused upstairs. The iron-based high-temperature shift and molybdenum-based wide-temperature catalysts you mentioned refer to sulfur-tolerant shift. They are iron-chromium-based high-temperature shift and cobalt-molybdenum-based sulfur-tolerant shift catalysts, which are shift reactions. The iron-molybdenum catalyst mentioned by the poster is a hydrogenation catalyst and an organic sulfur hydrogenation catalyst. It is mainly used for desulfurization of natural gas and coke oven gas.