Optimization of Preparation Process for Fe2(SO4)3/γ-Al2O3 Solid Acid Catalyst for Hydrolysis of Phytin to Inositol

Abstract

Abstract: Solid acid catalyst Fe2(SO4)3/γ-Al2O3 was prepared by maceration method and used to hydrolyze phytin to inositol at atmospheric pressure. Inositol yield was calculated to evaluated the activity of the prepared catalyst. The effects of maceration solvent concentration, maceration time and baking temperature on catalyst activity were explored. The optimal conditions for preparing Fe2(SO4)3/γ-Al2O3 were determined by response surface methodology (RSM) to be maceration solvent concentration of 50 mg/mL, maceration time of 4 h and baking temperature of 436 ℃. Under these conditions, Fe2(SO4)3/γ-Al2O3 was obtained and used to successfully hydrolyze phytin to achieve an inositol yield of 14.18% and a hydrolysis efficiency of 70.9%.

Key words: inositol, atmospheric hydrolysis, catalyst

CLC Number:

TS210.9

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