Maleic anhydride is produced by the gas-phase oxidation of n-butane. In the whole process, methyl is converted to carboxylate and the skeleton is dehydrogenated. The selectivity of this method reflects the robustness of maleic anhydride and its conjugated double bond system.

傳統上，順酐廠家是通過苯或其他芳族化合物的氧化產生的，截2006年，只有少數小型工廠繼續使用苯。

Traditionally, maleic anhydride is produced by oxidation of benzene or other aromatic compounds. As of 2006, only a few small factories continued to use benzene.  

 

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在兩種情況下，將苯和丁烷加入熱空氣流中，使混合物在高溫下通過催化劑床。控制空氣與碳氫化合物的比例以防止混合物點燃。五氧化二釩和三氧化鉬是用于苯途徑的催化劑，而磷酸釩用于丁烷途徑：C4H10 + 3.5O2→C4H2O3 +4H2OΔH= -1236kJ / mol

In both cases, benzene and butane are added to the hot air stream to make the mixture pass through the catalyst bed at high temperature. Control the air to hydrocarbon ratio to prevent ignition of the mixture. Vanadium pentoxide and molybdenum trioxide are catalysts for benzene pathway, while vanadium phosphate is used for butane pathway: C4H10 + 3.5o2 → c4h2o3 + 4H2O Δ H = - 1236kj / mol  

主要的競爭過程需要丁烷的完全燃燒，這種轉化的放熱是部分氧化的兩倍。

   the main competitive process requires complete combustion of butane, and the exothermic rate of this conversion is twice that of partial oxidation.

關于順酐的氣相氧化產生方法就介紹到這里了，希望對大家有所幫助。想了解更多相識，可以關注順酐廠家

About maleic anhydride gas phase oxidation method is introduced here, hope to help you. If you want to know more, you can pay attention to maleic anhydride manufacturers