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| Study on the immobilization and catalytic performance of homogeneous catalyst palladium acetate |
| He Yulan |
| School of Environment and Chemical Engineering, Anhui Vocational and Technical College, Hefei 230011, China |
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Abstract As a homogeneous catalyst, palladium acetate has excellent catalytic performance, with the progress of the reaction, the performance of the catalyst decreases, the catalyst after the reaction is difficult to recover, and the products are polluted. This problem can be solved very well by immobilizing palladium acetate on inorganic materials, such as silica gel, modified silica gel, molecular sieve and mesoporous TiO2/WO3 hollow spheres. Several immobilized palladium catalysts were prepared by grafting method, and the obtained catalysts were applied to the Suzuki reaction. The conversion rate of palladium catalyst supported on sulfonic acid modified silica gel was 98.9% under the conditions of water as solvent, alkali as sodium hydroxide and TBAB protection. The catalyst was tested repeatedly, and the catalyst maintained cycle stability.
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