Preparation And Catalysis Of Ionic Organic Polymer Porous Material

Social progress drives the progress of human technology,and also indicates that the demand of human beings is increasing.As the demand increases,our requirements for materials also increase.How to prepare more products under the mildest conditions has become a research boom for researchers.Catalysts can not only accelerate the reaction rate,but also reduce costs,so they are essential for the study of catalysts.Therefore,some ionic organic porous polymers were designed and synthesized as catalysts for various catalytic reactions.A new porous polyaminobenzenesulfonic acid（PPABSA）solid acid catalyst was prepared by the one-pot method.The catalysts were characterized by Scanning electron microscope,transmission electron microscopy,specific surface area and aperture measurement,fourier infrared,elemental analysis,and thermogravimetric analysis.From the characterization,the catalyst is porous and well stable.Its catalytic performance was evaluated by synthesizing glycerol monolaurate（GML）with lauric acid and glycerine.After the single factor study,the optimal optimization conditions were obtained.The reaction process was investigated in detail.The conversion rate of raw material was 94.89%,and the selectivity reached 61.66%under the optimal condition.The catalytic activity was not declined obviously by reusing five times.It was also validated using the response curve method.A novel porous macromolecule oxazine poly-ionic liquid solid acid（SAA-M-S）catalysts was prepared and characterized by scanning electron microscopy,specific surface area and aperture measurement,fourier infrared,energy dispersive spectrometer and thermogravimetric analysis.The characterization results showed that the synthesized catalyst was a porous polymer and had good heat stability.The properties of the catalyst were evaluated by synthesized tributyl citrate using an esterification reaction.Under optimal condition,the conversion rate of citrate acid was up to 91.74%.The catalytic activity did not reduced obviously after being reused for 10 times.The reaction conditions were optimized by the method of surface optimization.The fitting results were in good agreement with the experimental results.A novel ionic porous organic polymers catalyst（DH-i POPS-A）was prepared and characterized by scanning electron microscopy,specific surface area and aperture measurement measurements,fourier infrared and thermogravimetric analysis.The characterization results showed that the DH-i POPS-A was a porous polymer and had good heat stability.The catalytic performance of the catalyst was evaluated by synthesis of methacrolein from formaldehyde and propionaldehyde.Under optimal condition,the conversion rate of propionaldehyde was up to 99.57%and the selectivity of methacrolein was 98.77%.The catalytic activity did not reduced obviously after being reused for 5 times.The reaction kinetics of methacrylical synthesis were further studied,and the results showed that the reaction order was 1.6,the activation energy was 50.28 kJ·mo L,and the pre-index factor was 4.17x10⁷(moL·L^-1)^-1.456/s.