Kinetics of esterification and transesterification for biodiesel production in two-step process;

Progress of catalysts for producing biodiesel by esterification and transesterification reaction;

Catalytic performance of phosphotungstic acid immobilized by sol-gel method for esterification of critic acid;

Solid superacids SO~2-_4/TiO_2-Al_2O_3 were prepared and used to catalyze the esterfication of iso-octyl alcohol and by-products in oxidization reaction of durene,which were pretreated before esterifying reaction.

The influence factors esterfication reaction, such as catalyst amount, acid alcohol mole ration,reaction time were investigated.

On the basis of analyzing the starch reaction theory of esterfication and acknowledging the existing work that had been done by predecessors, the effects of conditions on the reactions together with the product's properties including clarity, the freeze-thaw stability and the degree of substitute (DS) were systematically studied by means of changing the condition such as the react.

Study on the determination method about the esterifying enzymes from DaQu of Chinese Strong Flavour Liquor Making;

The esterifying effects of monascus,daqu and rhizopus strain on single acid(acetic acid,caproic acid,lactic acid,butyric acid) and mixed acid(acetic acid,caproic acid,lactic acid,and butyric acid mixed together according to the ratio of 1∶1∶1∶1) were studied.

The disodium alkyl polyglycoside sulfosuccinate was synthesized by esterifying and sulfonating reaction of alkyl polyglycoside,succnic acid in the presence of p-toluenesulfonic acid,and influence fac- tors of the synthetic process were also studied.

The effect of reaction timcxreaction temperaturexpH and citrate concentration on the esterify process were discussed.

Based on single factor experiment including esterifying temperature,esterifying time,and vitriol dosage,the conditions for esterifying free fatty acid were optimized by response surface methodology and by determining acid value and content of V_E as evaluation indexes.

Chemical modification including oxygenation, esterify, graft copolymerization and so on.

Study on technics of synthesize dimethyl fumaricate, firstly prefabricated fumaric acid, with furfural as raw material, V2O5 as catalyst and potassium chlorate as oxidizer then synthesized dimethyl fumaricate through esterication of fumaric acid and methanol with phosphor tungstenic acid as catalyst.

This paper reported that a higuy active solid supperacid TiO_2/SO_4 catalysts and synthetizing roue and technolozical condition of esterication reaction for buthlacid and isoamylol.