Preparation of Lactates of C_1-C_5 alcohols and Further Prepering Lactide from Them;

The study on ferric chloride hydrate (FeCl_3·6H_2O) used in the esterification of lactic acid and alcohols is reported in this paper,and seven kinds of lactates were prepared.

The study on sodium bisulfate monohydrate(NaHSO 4·H 2O) used in the esterification of lactic acid and various alcohols is reported and 11 kinds of lactates were synthesized.

Study on direct synthesis of lactide from lactate ester;

Catalytic synthesis of ethyl lactate by lanthanum solid superacid SO_4~(2-)/TiO_2/La_2O_3;

Study on synthesis of ethyl lactate from D, L-lactide;

Synthesis of ethyl lactate over SO_4~(2-)/SiO_2ZrO_2 as catalyst;

During the research of the green chemical technique for conversion of lactic acid to methyl lactate,a new reversed-phase high performance liquid chromatographic(RP-HPLC) method was developed for the simultaneous determination of lactic acid and methyl lactate in the continuous esterification system in order to optimize the reaction conditions.

Synthesis of methyl lactate on the cation exchange resin was studied under the diffrent conditions.

Based on detailed investigation of related literatures, the dehydration reaction of methyl lactate was determ.

Kinetics of synthesis of butyl lactate by heteropoly acid as catalyst;

Study on synthesis of butyl lactate from D,L-lactide;

The optimal reaction conditions and catalysis reaction dynamics catalyzed synthesis of propyl lactate is studied with the rare earth solid superacid as catalyst.