Method for catalytic production of trimethylolpropane oleate by using solid superacid and application of method

Abstract

The invention relates to a method for catalytic production of trimethylolpropane oleate by using solid superacid and an application of the method. The method comprises the following steps: esterification reaction: mixing trimethylolpropane with oleic acid according to the weight ratio of 1:(2.1-9.5), simultaneously adding the solid superacid, and carrying out reaction under the vacuum degree of 10-1000Pa and the temperature of 120-200 DEG C for 4-10 hours; filtration: using a 10-600 mesh filter mesh or a filter plate to filter reaction products, and removing the solid superacid; and removal of unreacted reactants: heating the reaction products after the filtration to 180-300 DEG C, keeping the vacuum degree of a system at 1-1000Pa, carrying out vacuum distillation for 40-120 minutes, and removing the unreacted reactants to obtain the trimethylolpropane oleate. The method has the advantages of solving the problems of complex product separation, poor product quality, dark color, more side reactions, environmental pollution and the like caused by the use of sulfuric acid during the traditional production processes of the trimethylolpropane and the oleic acid.

Description

technical field

[0001] The invention relates to a method for producing trimethylolpropane oleate catalyzed by a solid superacid produced without pollutants in the production process and an application thereof. Background technique

[0002] During the use of lubricating oil, with the operation of machinery, 50% of the total mass of lubricating oil will be scattered into the surrounding environment. The main component base oil in traditional lubricating oil usually uses petroleum isolates, which have poor biodegradability, and the general degradation rate is only about 20%. The pollution caused by lubricating oil to the environment is already very serious. Vegetable oil has excellent lubricating properties, good biodegradability, and no pollution to the environment. It has become the first choice for high-grade lubricants. Trimethylolpropane oleate, which is made from vegetable oil, is an excellent lubricant with good thermal stability and biodegradability. The method for pr...