Based on the reaction process for C4 olefins polymerization,a new kind of bifunctional acid resin(KC110,Amberlyst35)supported palladium catalyst was designed and prepared,which can simultaneously catalyze the selective hydrogenation of 1,3-butadiene by one-step reaction and the polymerization of isobutene.The properties of the bifunctional catalyst were respectively characterized by electron probe microanalysis(EPMA),N2 physisorption-desorption(BET),transmission electron microscope(TEM),and X-ray photoelectron spectroscopy(XPS).Moreover,the performance of the bifunctional catalyst in the hydro-polymerization of C4 olefins was also investigated.The results show that the palladium nanoparticles loaded on 0.10％Pd/KCll0 bifunctional catalyst with an average particle diameter of 3-10 nm were mostly distributed on the macroporous surface of resin.The acidic property and the pore structure of resin were well preserved.The hydro-polymerization of C4 olefins was performed at the reaction temperature of 25 ℃,the reaction pressure of 1.4-1.6 MPa,the mass hourly space velocity of 2.7 h-1,the molar ratio of hydrogen to 1,3-butadiene of 1.5,as a result of which 1,3-butadiene can be completely removed;the isobutene conversion rate is above 81.5％,and the selectivity of C8 in polymerization products is about 75.1％.
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