Method for synthesizing trioxymethylene by catalyzing formaldehyde cyclization reaction through bifunctional ionic liquid

• Main Authors: XIA CHUNGU, TANG ZHONGHUA, SONG HEYUAN, CHEN JING
• Format: Patent
• Language: Chinese; English
• Published: 20.04.2011
• Subjects: CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY; CHEMISTRY; CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; HETEROCYCLIC COMPOUNDS; METALLURGY; ORGANIC CHEMISTRY; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE; THEIR RELEVANT APPARATUS; TRANSPORTING

The invention discloses a method for synthesizing trioxymethylene by catalyzing cyclization reaction of aqueous solution of formaldehyde through bifunctional ionic liquid. In the method, the bifunctional ionic liquid is taken as a catalyst, a mode of catalytic rectification reaction is adopted, and the trioxymethylene is prepared through the formaldehyde cyclization reaction. The method has the advantages that: the application range of reaction materials is wide, the catalyst is low in corrosion, high in catalytic activity and recyclable, the product is high in selectivity, and the operating process is simple and high in controllability.