Graphite oxide immobilized acidic ionic liquid catalyst and preparation and application thereof

• Main Authors: GU WANGJUN, CHEN HENGQUAN, ZHU MINGQIAO, ZHOU YUN
• Format: Patent
• Language: Chinese; English
• Published: 25.05.2016
• 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 graphite oxide immobilized acidic ionic liquid catalyst and preparation and application thereof. According to the preparation, a graphite oxide carrier is prepared, supported ionic liquid is prepared and synthesized by adopting a two-step method, and then, the ionic liquid is supported on the graphite oxide by adopting a dipping method in a manner of taking anhydrous ethanol as a solvent; the prepared immobilized acidic ionic liquid catalyst is applied to a reaction for preparing caprolactam through Beckmann rearrangement, -SO3H of the ionic liquid serves as an active center of the catalyst, and the graphite oxide serves as the carrier of the catalyst. The catalyst provided by the invention has the characteristics of good activity and selectivity and catalyst recyclability in the preparation of caprolactam through the liquid-phase Beckmann rearrangement of cyclohexanone oxime, thereby having a potential industrial application prospect.