首先用γ-氨丙基三甲氧基硅烷对SiO2进行接枝改性,再依次与香草醛、Li2PdCl4反应,合成了环钯/SiO2有机-无机杂化材料.采用FT-IR、XRD、XPS和TG-DSC等方法对该杂化材料进行了表征,并研究了其对碘代芳烃与丙烯基衍生物交叉偶联反应的催化活性.结果表明该杂化材料是具有较高催化活性和选择性,并具有良好循环使用性的多相催化剂.
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