Oxidation of n-butane to maleic anhydride
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In the process of producing maleic anhydride via the oxidation of n-butane in water, the concentration of butane entering the reactor is increased as quickly as possible from 0.6% (by volume) to above 1.0% (by volume). The reason for this is that operating at a lower concentration for an extended period results in a high conversion rate of butane, but low selectivity; could this be due to the space velocity? The amount of butane fed in has little impact on the space velocity (the amount of butane fed in is much less than that of air). Please discuss what factors affect the selectivity of maleic anhydride
What are the side reactions involved in the oxidation of n-butane to maleic anhydride? I’d appreciate it if you could provide more details! Thank you everyone! ! !
Air velocity, among other things, has a significant impact on the conversion rate
The side reaction is the production of carbon dioxide and water
Operating at low space velocities or with a low inlet butane concentration prolongs the contact time between the feedstock and the catalyst, resulting in the thorough oxidation of the maleic anhydride to CO/CO2. Although the conversion rate is high, the selectivity decreases significantly; therefore, space velocity or inlet concentration has a significant impact on the reaction.