using 1 3 dimethylimidazolium sulfate dmim 2 so 4 and sncl 4 5h 2 o as catalyst after adding dmim 2 so 4 see the amount in table 8 sncl 4 5h 2 o see the amount in table 8 water 1 0 g 0 200 g of sucrose and methanol 5 0 ml were added into a 10 ml batch reactor the reactor was sealed and heated to reaction temperature listed in table 8 under stirring to carry out the reaction for 2 hours after reaction naoh solution 0 50 m 10 0 ml was added to carry out a hydrolysis reaction at 60 u00b0 c for 5 hours to obtain a solution hcl 0 50 m 10 0 ml was added into the resulting solution to convert sodium lactate to lactic acid and then the solution was analyzed on a hplc to obtain the total percent yield of lactic acid and methyl lactate as that listed in table 8 in table 8 u201c t u201d stands for reaction time in hours u201c t u201d stands for the reaction temperature in degrees celsius and u201c y u201d stands for the total yield of lactic acid and methyl lactate the results listed in table 9 were obtained using 1 3 dimethylimidazolium sulfate dmim 2 so 4 and sncl 4 5h 2 o as catalyst after adding dmim 2 so 4 see the amount in table 9 sncl 4 5h 2 o see the amount in table 9 water 1 0 g 0 500 g of glucose and methanol 5 0 ml were added into a 10 ml batch reactor the reactor was sealed and heated to reaction temperature.