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中文摘要：
制备了一系列含不同金属离子的磺化Salen金属配合物插层水滑石催化剂用于甘油催化氧化制备二羟基丙酮（DHA）。利用X射线粉末衍射（XRD）、傅里叶变换红外光谱（FT-IR）及电感耦合等离子发射光谱（ICP）分析手段对催化剂进行了表征。结果表明,磺化Salen配体插入镁铝水滑石（LDH）层板间,金属离子与磺化Salen配体配合,制备出磺化Salen金属配合物插层的水滑石非均相催化剂。反应结果表明,含Cr3＋及含Cu2＋催化剂有利于H2O2活化,催化活性较高,含Cu2＋催化剂利于甘油脱氢,DHA选择性较高。含Cu2＋催化剂用于甘油催化氧化反应时,在p H值为7、60℃条件下反应4 h,甘油转化率为40.3%,DHA选择性达到52.9%。
英文摘要：
A series of sulfonato-salen metal complexes were intercalated into Mg-Al layer double hydroxide（LDH） and used for selective oxidation of glycerol to dihydroxyacetone（DHA）. The X-ray diffraction,Fourier transform infrared spectroscopy and elemental analysis results of the as-prepared catalysts demonstrated that the metal ions were combined with sulfonato-salen ligands to form metal complexes that intercalated in the LDH.The Cr（ III） and Cu（ II） sulfonato-salen complex-intercalated LDH catalysts were favorable for activation of H2O2,promoting the oxidation of glycerol to DHA. It was found that the Cu（II） sulfonato-salen-intercalated LDH catalyst was also beneficial for the dehydrogenation of glycerol,resulting in a high selectivity to DHA. The glycerol conversion and DHA selectivity obtained over the Cu（ II） sulfonato-salen-intercalated LDH catalyst reached 40. 3% and 52. 9% respectively under the optimum reaction conditions of 60 ℃,4 h and p H value 7.
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