This paper studied the synthesis of sodium glycinate carbonate by ultrasonic wave,microwave method and compared with wet method.The results indicated that the microwave could dramatically improve the yield and decrease the reaction times and that the product could demand the essential quality of the SGD as a kind of food additives,so the product did not need to separate after the systhesis.In addition,we also characterized the pured product by IR,UV,XRD and TGDTG.
The ultrasonic extraction of phosphoric acid without the stirring of oar was studied,and the influences of reaction temperature,sulfuric acid concentration,liquid solid proportion and reaction time on the acidolysis of phosphate ore were investigated.In addition,we also preliminarily compared the experimental results with ultrasound with that from agitation.
