碳的催化气化（Catalytic gasification of carbon）.docVIP

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碳的催化气化（Catalytic gasification of carbon）.doc

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碳的催化气化（Catalytic gasification of carbon）

碳的催化气化（Catalytic gasification of carbon） Effects of cations and anions on gasification reaction The catalytic effect of the additive is related to the kind of cation, and the stronger the cation is, the more obvious the catalytic effect on the carbon gasification reaction is. Effect of different rate of carbonate on carbon gasification, several carbonate on the carbon gasification reaction has a catalytic effect, and the influence of K2CO3Na2CO3Li2CO3BaCO3SrCO3CaCO3MgCO3; catalytic activity of fluoride also has certain rules: KFNaFLiF CaF2. Different potassium salts have catalytic effect on carbon gasification reaction. For complex salt, the catalytic effect of KNO3 is the best, followed by KOH, K2CO3, K2SO4, K2SiO3, K3PO4. The influence of potassium carbonate on the rate of carbon gasification reaction is complicated: KFKClKIKBr. For sodium, lithium and alkali metal salts, the law is similar to that of potassium salts. The gasification rate of activated carbon is obviously faster than that of graphite, and the catalytic law of various salts is consistent with the catalytic law of graphite. Effect of temperature on catalytic activity of carbon gasification For the catalytic reaction of carbon gasification, the gasification rate of carbon catalyzed gasification has greatly improved compared with that without catalyst. The gasification reaction without catalyst at 800 DEG in the rate of 3%, the carbon gasification rate of about 10%, carbon gasification reaction without catalyst at 850 DEG C when the rate was about 6%, an increase of only 3%, the carbon gasification rate as high as 70%, increase significantly. The effect of KCl on the rate of carbon gasification reaction at different temperatures is similar to that of sodium metasilicate. It can be seen that the catalytic effect of the catalyst at higher temperature is much stronger than that at lower temperature. Catalytic mechanism analysis The oxygen containing salt in common, generally, phosphate and silicate is re