Citation:
XU Qi-Jie, LIU Ju-Sheng, LIU Fei, CUI Yuan-Chen. Catalytic Properties of Complexes of Cross-linking Humic Acid Supported Metals on Heck Reaction[J]. Chinese Journal of Applied Chemistry,
;2008, 25(8): 926-930.
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Cross-linking humic acid(CL-HA) was synthesized readily with epichlorohydrine as cross-linking reagent. The product was analyzed and confirmed by IR spectrum and solvent experiment. The catalysts of CL-HA-Pd and CL-HA-Pd/Ni were prepared via supporting PdCl2 and NiCl2 on cross-linking humic acid, respectively. The two catalysts were reduced with NaBH4. The catalytic performances of the four catalysts, CL-HA-Pd, CL-HA-Pd/Ni and their reducing products were studied via the Heck reaction of aryl halide with vinyl compounds. The results show that the catalyst could catalyze the Heck reaction of substituted aryl halide with crylic acid, the yields were above 80%.
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Keywords:
- cross-linking humic acid,
- palladium,
- nickel,
- NaBH4,
- Heck reaction
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