羊毛酸和羊毛醇酯化反应及产物脱色工艺研究.pdfVIP

Abstract

Lanolinisusuallyextractedfromwoolwashingwastewater.Theappearanceof

crudelanolinisbrownblackorbrownyellow,withobviousspecialodor.Aftera

seriesofrefiningprocesses,refinedlanolincanbeobtained.However,the

conventionalextractionandrefiningprocessoflanoliniscomplex,andthepriceof

lanolinisnotcheap.Ontheotherhand,cholesterol,asanimportantchemicalraw

material,canbeextractedfromcrudelanolinaftersaponification,butsuchaprocess

willproducealargenumberofindustrialgradewoolacidandwoolalcoholby-

products.Thepurposeofthispaperistoexploreanesterificationreactionofindustrial

gradelanolinacidandlanolinalcoholby-productsproducedincholesterolproduction,

andtooptimizetheesterificationreactionproductsreplacepartofthemarketof

naturallanolinasasubstituteoflanolinorsyntheticlanolin,andcreateanewwayof

revenueforenterprises.Becausethecompositionofindustrialgradewoolacidand

industrialgradewoolalcoholiscomplex,itisdifficulttodetectthemonebyone.

Therefore,fromthemacroscopicpointofview,takingtheacidvalueandchromaas

themainreferenceindexes,theesterificationreactionbetweenlanolinacidand

lanolinalcoholaswellasthedecolorizationanddeacidificationprocessoftheproduct

wereexplored.

Themainresearchcontentsandresultsofthispaperareasfollows:

1.Designandoptimizationofesterificationprocessoflanolinicacidandlanolin

alcohol

Twokindsofcatalysts,phosphoricacidandp-toluenesulfonicacid,wereselected

withthechromaticityandacidvalueofesterificationproductsasthemainreference

inde