文档介绍：Abstract
With the development of society, global fossil resources are depleted, and the research of clean and renewable green energy has e booming all over the world. Biodiesel has drawn much attention of world as an environment-friendly diesel fuel instead of petroleum diesel. However, the main problem to develop biodiesel is its high cost. Therefore, it is so important to find a kind of raw materials which is inexpensive and available for the industrial production. With regards to the situation of China, waste oil, waste fried oil and waste animal fats have e the raw materials to produce bio-diesel. But, the characteristic of the corresponding high acid oil value has limited the application of many catalysts. This thesis aims to find a new efficient solid acid catalyst for the two-step process preparation of biodiesel and the preparation of diesel additives triacetin by glycerol, to make it appropriate to the free fatty acid (FFA) content of the feedstock oil catalytic etherification process.
Firstly, based on the research of preparation methods and characteristics of using p-toluenesulfonic acid catalyst, this thesis optimizes the corresponding preparation conditions for this catalyst. And the esterification reaction ability to obtain optimum preparation conditions is also studied. The optimization condition is obtained when the ratio of glycerol and p-toluenesulfonic acid mass is 1:2, and the experimental reaction
temperature is 260℃.
Secondly, this thesis analyzes the optimization of preparation conditions for the sulfonated glycerol catalytic esterification reaction, studies reuse of this catalyst performance, and finds the optimal result for the reaction condition when the ratio of oleic acid to methanol molar is 1:10, the catalyst amount for the quality of oleic acid is
10%, the reaction temperature is 68℃, and the reaction time is 4h. Under the optimal
reaction condition, the ratio of oleic acid esterification reaches %.
Thirdly, this thesis stu