The study shows: the course is controlled by diffusion, the acidolysis dynamics model is offered, it is :1- (1-Y) 1/3=kt1/5,and proved.

• 指出过程属于扩散控制，提出了酸解动力学模型为：1-（1-Y）1/3=kt1/5，并检验了模型的正确性。