Maleic_10 - The production of maleic anhydride by the air...

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The production of maleic anhydride by the air oxidation of benzene was recently studied using a vanadium pentoxide catalyst. [Chem. Eng. Sci., 43, 1051 (1988).] The reactions that occur are: Reaction 1: C 6 H 6 + (9/2)O 2 C 4 H 2 O 3 + 2CO 2 + 2H 2 O Reaction 2: C 4 H 2 O 3 + 3O 2 4CO 2 + H 2 O Reaction 3: C 6 H 6 + (15/2)O 2 4CO 2 + 3H 2 O Because these reactions were carried out in excess air, volume change with reaction can be neglected, and the reactions can be written symbolically as this reaction sequence, where Reaction 1 is second-order and all others are first-order: A B C D A = Benzene, B = Maleic anhydride, C = Products (H2O, CO2), and D = Products (CO2, H2O) The specific reaction rates at the operating temperature are: k1 = 0.2 (dm6/mol/kg cat/s) k2 = 4*10 -4 (dm6/kg cat/s) k3 = 6*10 -4 (dm6/kg cat/s) These reactions are carried out isothermally in both a CSTR and a PBR. Benzene enters the reactor at a concentration of 0.01 mol/dm3, and the total volumetric flow rate is 2.5
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This note was uploaded on 05/06/2010 for the course CHE 411 taught by Professor Ahmad during the Spring '10 term at Aberystwyth University.

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Maleic_10 - The production of maleic anhydride by the air...

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