A study of catalytic p-cyclodextrin carbonate membrane reactor performance in PNPA hydrolysis

NATOLI, MARIAPINA; PAGLIERO CECILIA; TROTTA, FRANCESCO; DRIOLI, ENRICO

JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL

ELSEVIER SCIENCE BV

Lugar: Amsterdam; Año: 1997 vol. 121 p. 179 - 186

1381-1169

Abstract A catalytic cyclodextrin membrane reactor system is a promising tool for tbe production of chemicals of potential interest. To investigate tbe application of membrane immobilized carbonate derivative P-cyclodextrin (B-CD) for tire p-nitrophenylacetate (PNPA) hydrolysis, the effect of different average degree of P-CD carbonate substitution CDS), the amount of immobilized PCD carbonate and operating conditions such as pH and temperature have been examined under a constant substrate concentration. The initial reaction rate as a function of immobilized PCD carbonate concentration resulted in an increase of the p-nitrophenol (PNP) production rate. A complete hydrolysis of PNPA was reached after 3 h of operation by using the P-CD carbonate with DS equal to 7. These data suggest the conditions under which the FCD carbonate membrane reactor with 2.5 wt% to 7.5 wt% of PCD carbonate (DS 5 and 7) can operate with high productivity and low cost: a reaction temperature of 20°C. a pH of 8.4, low permeation rate and transmembrane pressure.