A process for the preparation of biodegradable lubricant base oil

摘要

The present invention is an improved process for preparing fatty acid esters suitable as biodegradable lubricant base oils with a selectivity of 100 mol%, wherein the molecular formula is M (X) 2-nYn · mH2O, wherein X is phenyl Represents phosphonate, Y represents HPO42- or HPO32-, M represents a metal or metalloid ion, preferably selected from the group consisting of Zr, Zn, Cd, Al, Sn, La and Ce, and the value of n is Contacting the aliphatic compound with an alcohol in the presence of a solid phosphonate catalyst having a range of 0.2 to 1.8 and a value of m ranging from 0 to 5. Disclosed is a method, wherein the alcohol is a fatty acid, a fatty acid methyl or ethyl ester, a vegetable oil or animal fat, or a mixture thereof, and the alcohol is a monohydric alcohol having 6 to 22 carbon atoms, or a polyol having at least two hydroxyl groups. To do.