Self-condensation of cyclohexanone catalyzed by Amberlyst-15 -- Study of diffusional resistances and deactivation of the catalyst
- Univ. Complutense, Madrid (Spain). Dept. of Chemical Engineering
The deactivation of a macroporous sulfonic resin in a condensation process with production of water is due to three simultaneous causes: inhibition by water, fouling/poisoning, and hydrolysis of sulfonic groups. The reaction was performed in a batch reactor. The diffusional resistances were negligible for stirrer speed > 100 rpm, and particle size < 0.09 mm. The inhibition by water was minimum with water concentration, C[sub w], in the range of 0.1-0.2 mol/l. For a greater C[sub w], the inhibition is expressed by the pseudoactivity a[sub w][equivalent to] k[sub 1]/k(1 + k[sub 2]C[sub w][sup 2]). The deactivation by fouling/poisoning follows third-order kinetics with respect to both the activity, a, and the concentration of byproducts, Cp, -da/dt=k[sub d]C[sub P][sup 3]a[sup 3]. The hydrolysis of sulfonic groups, measured by the loss of fractional acid capacity, y[sub n], follows second-order kinetics, -dy[sub n]/dt =k[sub H]y[sub n][sup 2].
- OSTI ID:
- 7286077
- Journal Information:
- Industrial and Engineering Chemistry Research; (United States), Journal Name: Industrial and Engineering Chemistry Research; (United States) Vol. 33:3; ISSN IECRED; ISSN 0888-5885
- Country of Publication:
- United States
- Language:
- English
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