Silica-metalloporphyrins hybrid materials: preparation and catalysis to hydroxylate cyclohexane with molecular oxygen |
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| Authors: | Jin-Hua Cai Jin-Wang Huang Ping Zhao Yuan-Jian Ye Han-Cheng Yu and Liang-Nian Ji |
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| Institution: | (1) MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry and Chemical Engineering &; State Key Laboratory of Optoelectronic Material and Technologies, Sun Yat-Sen University, 510275 Guangzhou, People’s Republic of China;(2) The Key Laboratory of Gene Engineering of Ministry of Education, Sun Yat-Sen University, 510275 Guangzhou, People’s Republic of China;(3) Department of Chemistry and Life Science, Hechi University, 546300 Yizhou, People’s Republic of China; |
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| Abstract: | Three types of novel silica-metalloporphyrins hybrid materials, Si-S-APTCPPFe, Si-S-APTCPPMn and Si-S-APTCPPCo, were prepared
at room temperature by sol–gel method involving a thiol-ene polymerization reaction of 5-(4-allyloxy)phenyl-10,15,20-tri(4-chlorophenyl)porphyrin
(APTCPP) with 3-mercaptopropyltrimethoxysilane (MPS). The hybrid materials were characterized by XRD, SEM, FT–IR, UV–Vis and
TG, and were investigated as catalysts for the aerobic oxidation of cyclohexane. It is found that these hybrid materials are
more efficient catalysts than the analogous non-supported metalloporphyrins for cyclohexane hydroxylation in metalloporphyrin–O2–ascrobate system and the metal ion in the porphyrins significantly affected the catalytic efficiencies of these hybrid materials. |
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| Keywords: | Silica-metalloporphyrins hybrid material Sol– gel method Catalysis Hydroxylation Cyclohexane |
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