Synthesis and catalytic properties of a novel phthalocyanine covalently grafted onto silica

Abstract

ABSTRACT:The iron complex of 2(3),9(10), 16(17),23(24)-tetra [1,5-di(3-triethoxysilyl-propyl)biuryl]phthalocyanine (1) was prepared by reacting iron tetraaminophthalocyanine with 3-(triethoxysilyl)propyl isocyanate. This complex was directly grafted onto silica to give a supported catalyst without preliminary modification of silica support. This supported catalyst was successfully applied in clean catalytic oxidations by using molecular oxygen in combination with isobutyraldehyde. Cyclooctene, cyclohexene and styrene were oxidized to corresponding epoxides with 90, 78 and 74% yields, respectively. 2,3,6-Trimethylphenol was selectively oxidized to 2,2',3,3',5,5'-hexamethyl-4,4'-biphenol.

Highly efficient electrocatalysts derived from carbon black supported non-precious metal macrocycle catalysts for oxygen reduction reaction

“…S1 and S2. Meanwhile, referring to previous reports [23,25,26] , we confirms that we have synthesized them successfully. The FePC-NH 2 /HCB was synthesized through the dehydration of FePC-NH 2 and HCB (the reaction between amine and carboxylic group, Fig.…”

“…However, the insolubility of metal phthalocyanines has seriously limited its application. Besides, the scarcity of active functional groups hinders their covalent grafting with other active material [23] . Based on these, the amine derivatives of metal phthalocyanines are synthesized.…”

“…Based on these, the amine derivatives of metal phthalocyanines are synthesized. Due to the presence of active amino groups, the metal phthalocyanines derivatives could be grafted through chemical reactions [23,24] . In addition, the pyrolysis of these metal phthalocyanines contributes to improve ORR performance.…”

In situ Generated Dimethyl Dioxirane (DMD)/Copper(II) (2,2'-diamino-4, 4'-bithiazole) Complex as a New Oxidant for Polybutadiene and Hydroxyl Terminated Polybutadiene (HTPB) Epoxidation

“…Epoxidation of alkenes (10-15% conversion) at room temperature with molecular oxygen in the presence of an aldehyde using Cu salts and Cu crown ethers has been reported by Komiya et al [16]. Sorokin and coworkers have proposed a mechanism for the oxidation reaction based on pentacoordinated copper [17]. Similar pathways have been suggested for olefin epoxidation by iodosylbenzene in the presence of mono and binuclear copper(II) chelates of polydentate ligands with nitrogen-donors, or Cu 2þ ion itself, as catalysts [5,6].…”

Preparation and photoelectrical properties of poly(phenylethanone)-Znic phthalocyanine derivative

“…Pc and its derivatives display interesting catalytic [2], electronic and optical properties, in addition to their widespread use as colorants [3]. But as photoelectronic materials, Pcs also face many challenges for the further applications such as solubility and film forming ability.…”