Immobilized ionic liquid catalyst, and preparation method and application thereof

• Main Authors: ZHANG TONGLU, YANG YAOZONG, LI RUIFENG, LI JING, ZHANG CHAOFENG
• Format: Patent
• Language: Chinese; English
• Published: 16.02.2018
• Subjects: ACYCLIC OR CARBOCYCLIC COMPOUNDS; CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY; CHEMISTRY; METALLURGY; ORGANIC CHEMISTRY; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; THEIR RELEVANT APPARATUS; TRANSPORTING

The invention discloses an immobilized ionic liquid catalyst. The immobilized ionic liquid catalyst is formed by taking a mesoporous molecular sieve SBA-16 as a carrier, taking a 1-butyl-3-methylimidazole sulfonate ionic liquid as an active component and packaging the ionic liquid in the pore cage of the SBA-16 molecular sieve, wherein the mass ratio of the 1-butyl-3-methylimidazole sulfonate ionic liquid to the mesoporous molecular sieve SBA-16 is (1-5):10. When being used for catalyzing the synthesis of polyoxymethylene dimethyl ether through a reaction of methanol and trioxymethylene, the catalyst disclosed by the invention can solve the problems of difficult catalyst separation and poor stability, can be recycled for multiple times, and can improve the reaction activity of the synthesis reaction of the polyoxymethylene dimethyl ether and the selectivity of the target product. 本发明公开了种固载离子液体催化剂，是以介孔分子筛SBA-16为载体，以1-磺酸丁基-3-甲基咪唑盐离子液体为活性组分，将离子液体封装在SBA-16分子筛孔笼内部构成，其中1-磺酸丁基-3-甲基咪唑盐离子液体与介孔分子筛SBA-16的质量比为1～5︰10。以本发明