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通过浸渍法将水溶性铑膦配合物(Rh-TPPTS)负载到由十六烷基三甲基溴化铵(CTAB)修饰的蒙脱土(MMT)上,制备出Rh-TPPTS/CTAB-MMT负载型催化剂.采用XRD,FTIR,TG,BET,31P CP-MAS NMR和分散性实验对催化剂进行了表征.结果表明:水溶性铑膦配合物成功地负载到有机MMT上,并且该催化剂在有机溶剂中具有很好的分散性.该催化剂对于1-癸烯的氢甲酰化反应具有好的催化活性.在100℃、4 MPa、甲苯为溶剂的条件下,催化1-癸烯氢甲酰化可获得93.0%的转化率,95.8%的醛的选择性,2.1的正异比,137 h-1的TOF值.并对不同链长烯烃底物进行了考察.随着烯烃碳链的增加,醛的选择性下降,但是正异比有所增加.
Rh-TPPTS / CTAB-MMT was prepared by impregnation of water-soluble rhodium phosphine complex (Rh-TPPTS) onto montmorillonite (MMT) modified with cetyl trimethyl ammonium bromide The catalysts were characterized by XRD, FTIR, TG, BET, 31P CP-MAS NMR and dispersibility experiments.The results showed that the water-soluble rhodium-phosphine complex was successfully supported on the organic MMT, Solvent has good dispersibility.The catalyst has good catalytic activity for the hydroformylation of 1-decene.Under the conditions of 100 ℃, 4 MPa and toluene as the solvent, the catalyst of 1-decene hydroformylation Conversion of 93.0%, selectivity to aldehyde of 95.8%, orthogonality of 2.1, TOF value of 137 h-1, and the different chain length olefinic substrates were investigated.With the increase of olefin carbon chain , The selectivity of aldehyde decreased, but the positive and negative ratio increased.