Abstract
APG-12 was synthesized from n-dodecyl alcohol and glucose in catalysis system of p-Toluenesulfonic and phosphoric acid. Using the method of direct glycosidation, this paper discusses the impact of raw material ratio, catalyst dosage and reaction temperature on the synthesis. It is concluded that the synthesis of APG-12 best reaction process condition is the molar ratio of alcohol and glucose 7:1; the reaction temperature is 115℃ and the amount of catalyst is 1.3%, controlling the reaction pressure in 3 - 4 kPa. The resulting products are analyzed by infrared spectroscopy.
Highlights
Because of a lack of resources, we must search for new renewable resources
Preparation of APG-12 is currently commonly used for the direct glycosidation method
Through the single factor experiment to study the effects of catalyst type and the amount of sugar alcohol ratio, reaction temperature and pressure on the experimental results, the paper ascertains the influence of various factors on the reaction
Summary
Because of a lack of resources, we must search for new renewable resources. Synthesis of alkyl glycoside’s raw material is a renewable resource. Its synthesis has a far-reaching significance in future society’s energy development and utilization. Methods for preparing alkyl glycosides are glycosidation indirect method, direct glycosidation method, fischer method, starch degradation, mold method, tin tetrachloride catalysis method and so on. Preparation of APG-12 is currently commonly used for the direct glycosidation method. This method prepares APG-12 by glucose and long carbon chain alcohol directly. The advantage of this method is low production cost, high product purity and little by-products. Through the single factor experiment to study the effects of catalyst type and the amount of sugar alcohol ratio, reaction temperature and pressure on the experimental results, the paper ascertains the influence of various factors on the reaction
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