ナノ細孔をもつカルボン酸金属錯体をベースとした新しい固体触媒の構築と地球環境改善への展開(2005年度神奈川大学総合理学研究所助成共同研究)

概要

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The photo-oxidation catalysis of hydrocarbons with 1 atm dioxygen in a heterogeneous system is quite an interesting objective for both academic and industrial fields. The remarkable progress of the past decade in photocatalysis has been limited to ultraviolet light instead of the more useful visible-light region. The development of visible-light photocatalysts, therefore, has become one of the most important topics in photocatalysis research today. Here, we focused on the synthesis of novel microporous iron(III) carboxylate complexes having metalloporphyrins, Fe[MTCPP](M=Cu, Fe, Pd, Mn, Co; H_2TCPP=4,4',4'',4'''-(21H, 23H-porphine-5, 10, 15, 20-tetrayl) tetrakis benzoic acid). The complexes were characterized by elemental analysis, TG/DTA, magnetic susceptibility, FT-IR, diffuse reflectance (DR) UV-vis, EPR, EXAFS, BET surface area, pore size distribution, and nitrogen occlusion measurements. In the DRUV-vis spectra, the iron complexes showed some adsorption bands in the visible-light region. Therefore, we demonstrated the catalytic activities of Fe[MTCPP] complexes for the photo-oxidation of hydrocarbons with 1 atm dioxygen under visible-light irradiation. Fe[PdTCPP] showed 37 turnover numbers after 3h for the photo-oxidation of cyclohexene, which was higher than those of the other iron(III) carboxylate complexes.
神奈川大学の論文
2006-05-25