Hydrolysis of vegetable oils and fats to fatty acids over solid acid catalysts

TitleHydrolysis of vegetable oils and fats to fatty acids over solid acid catalysts
Publication TypeJournal Article
Year of Publication2011
AuthorsSatyarthi, JK, Srinivas, D, Ratnasamy, P
JournalApplied Catalysis A-General
Date PublishedJAN
KeywordsDouble-metal cyanide complex, Fat splitting, Fatty acids, Hydrolysis of vegetable oils and fats, solid acid catalyst

Solid Fe-Zn double-metal cyanide (DMC) complexes exhibit high catalytic activity for hydrolysis of edible and non-edible vegetable oils and animal fat. In a batch reaction, complete conversion of vegetable oil triglycerides to fatty acids with selectivity greater than 73 wt% was obtained at temperatures as low as 463 K, autogenous pressure and with 5 wt% of catalyst. Catalytic activity of DMC was superior to Amberlyst (TM) 70, SAPO-11, H-beta, HY, MoO(x)/Al(2)O(3) and sulfated zirconia. Rates of hydrolysis were greatly enhanced when solvents (tetrahydrofuran or N,N-dimethylformamide), phase transfer agents (tetrapropyl ammonium bromide) and products (a mixture of mono-/diglycerides and fatty acids) or fatty acid was added to the feed. Surface hydrophobicity which enables high wettability and activation of glycerides on active, acidic sites of reusable DMC is attributed to be the major cause for its superior catalytic activity. (C) 2010 Elsevier B.V. All rights reserved.

Type of Journal (Indian or Foreign)Foreign
Impact Factor (IF)3.903
Divison category: 
Catalysis and Inorganic Chemistry