期刊
JOURNAL OF PORPHYRINS AND PHTHALOCYANINES
卷 6, 期 7-8, 页码 502-513出版社
SOC PORPHYRINS & PHTHALOCYANINES
DOI: 10.1142/S1088424602000634
关键词
iron porphyrin; supported catalysts; layered double hydroxide (LDH); oxidation catalysis
We report the synthesis, characterization and catalytic behavior of iron(III) porphyrins immobilized in layered double hydroxides (LDH). A combination of EPR, UV-visible spectroscopy and powder X-ray diffraction (PXRD) was used to characterize the products. Three different procedures were used to perform the immobilization of iron porphyrin: a) adsorption into the LDH powder, b) co-precipitation and c) rehydration of calcined LDH. Several different porphyrins (Fe(TSPP), Fe(TCPP), Fe(TPP) and Fe(TDFSPP)) were employed in the study. After characterization, the isolated powders were investigated in the oxidation reaction of cyclohexane by iodosylbenzene and hydrogen peroxide in heterogeneous catalysis in comparison to homogeneous media. Some of these immobilized compounds were very good catalysts for this oxidation reaction, stimulating the future investigation of other substrates. Copyright (C) 2002 Society of Porphyrins & Phthalocyanines.
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