Dendritic mesoporous silica microsphere loaded carbene catalyst and application thereof in catalysis of synthesis of cyclic carbonate from carbon dioxide

• Main Authors: LIU XUETING, CUI SHASHA, DING HANG, LIU WENKUI
• Format: Patent
• Language: Chinese; English
• Published: 12.08.2022
• Subjects: CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY; CHEMISTRY; HETEROCYCLIC COMPOUNDS; METALLURGY; ORGANIC CHEMISTRY; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; THEIR RELEVANT APPARATUS; TRANSPORTING

The invention discloses a dendritic mesoporous silica microsphere loaded carbene catalyst and application thereof in catalyzing synthesis of cyclic carbonate from carbon dioxide. According to the catalyst, carbene groups are grafted on the surfaces of dendritic mesoporous silica microspheres. By utilizing the unique advantages of high specific surface area and high active sites of the catalyst, the catalyst can catalyze the cycloaddition reaction of CO2 to synthesize cyclic carbonate under the conditions of normal pressure, no solvent and no cocatalyst, and the catalyst has higher selectivity and conversion rate on the cycloaddition reaction, and is stable in structure and good in recyclability. 本发明公开了树枝状介孔二氧化硅微球负载卡宾催化剂及其在催化二氧化碳合成环状碳酸酯中的应用，该催化剂是在树枝状介孔二氧化硅微球的表面接枝有卡宾基团。利用本发明所得催化剂的高比表面积、高活性位点的独特优势，可在常压、无溶剂、无助催化剂的条件下催化CO2的环加成反应合成环状碳酸酯，该催化剂对环加成反应有较高的选择性与转化率，且结构稳定、循环使用性好。