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Homogeneous-like solid base catalysts based on pyridine-functionalized swelling porous polymers

机译:基于吡啶官能化溶胀多孔聚合物的均相固体碱催化剂

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Reported here is the synthesis of pyridine-functionalized porous polymers, which are designed as homogeneous-like base catalysts. These highly porous catalysts have adjustable pyridine contents, high BET surface area (312-649 m~2/g), large pore volume (0.5-2.0 cm~3/g) and rapid swelling property, thus they efficiently combined the advantage of both homogeneous and heterogeneous catalysts. The exposure degree of active sites in our homogeneous-like catalysts has been evaluated by Cu~(2+) adsorption, giving similar capacity with homogeneously dissolved poly-4-vinylpyridine. In the Knoevenagel condensation, these materials exhibit excellent activity and stability compared with Mg-Al hydrotalcite and magnesia as well as homogeneous base catalyst of poly-4-vinylpyridine.
机译:此处报道的是吡啶官能化的多孔聚合物的合成,该聚合物被设计为均相样的碱催化剂。这些高度多孔的催化剂具有可调的吡啶含量,高的BET表面积(312-649 m〜2 / g),大的孔体积(0.5-2.0 cm〜3 / g)和快速溶胀性能,因此它们有效地结合了两者的优点均相和非均相催化剂。已经通过Cu〜(2+)吸附评估了我们均相状催化剂中活性位点的暴露程度,与均相溶解的聚-4-乙烯基吡啶具有相似的容量。在Knoevenagel缩合反应中,与Mg-Al水滑石和氧化镁以及聚-4-乙烯基吡啶的均相碱催化剂相比,这些材料具有出色的活性和稳定性。

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