| abstract |
A mixed acid solid-supported catalyst and application in catalyzing n-butyraldehyde or isobutyraldehyde cyclization trimerization reaction belong to the technical field of organic synthesis. The mixed acid solid-supported catalyst is obtained by the following method: immersing a molecular sieve in a furoic acid solution, After soaking for 2 to 10 hours, the soaked molecular sieves are separated, air-dried at room temperature, and then placed in an isobutyric acid solution, soaked again for 8 to 15 hours, and dried to obtain a mixed acid-immobilized catalyst. The invention adopts a new type of supported solid acid catalyst, which has high activity, short reaction time, high conversion rate, good selectivity, no side reaction, and the catalyst can be used repeatedly for many times. |