种负载型离子液体催化酯交换反应合成碳酸二甲酯联产乙二醇的方法

• Format: Patent
• Language: Chinese
• Published: 02.01.2018
• Subjects: ACYCLIC OR CARBOCYCLIC COMPOUNDS; 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; 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

本发明属于工业催化技术领域，提供了种负载型离子液体催化酯交换反应合成碳酸二甲酯联产乙二醇的方法。所述负载型离子液体，是以含氯树脂颗粒为载体，以羟基阴离子结构单元与咪唑阳离子结构单元配对的离子液体为催化活性中心，通过化学键负载，制得功能化负载型离子液体催化剂，用于催化碳酸乙烯酯与甲醇的酯交换反应，同时合成碳酸二甲酯和乙二醇两种化工产品。催化剂制备过程简单、容易操作，经简单过滤即可实现催化剂的回收，这对于解决产物与催化剂分离困难的问题十分有利，且在固定床催化反应精馏合成碳酸二甲酯联产乙二醇中将具有较大的应用潜力和市场前景。 The present invention belongs to the field of industrial catalysis, and provides a method for synthesizing dimethyl carbonate and ethylene glycol by catalyzing transesterification through a load type ion liquid . The load type ionic liquid is a functional load type ionic liquid catalyst which is prepared by taking chlorine-containing resin particles as a carrier and taking an ionic liquid paired by a hydroxy anionic structure unit and an imidazole cationic structural unit as a carrier through chemical bond loading; the load type ionic liquid is used for catalyzing transesterification of ethylene carbonate and methanol, and is used for simultaneously synthesizing two chemical products of dimethyl carbonate and glycol. A preparation process for a cataly