COBALT PHTHALOCYANINE DERIVATIVES SUPPORTED ON TIO2 BY SOL-GEL PROCESSING.PART 1: PREPARATION AND MICROSTRUCTURE

Cobalt(II) 2,9,16,23-tetrasulphophthalocyanine and cobalt(II) 2,9,16,23-tetra(chlorosulphonyl)phthalocyanine were supported on TiO2 by reaction of the phthalocyanines with Ti(OR)4 followed by sol-gel synthesis. The thus obtained solid materials are stable in sulfide-containing media and are therefore suitable as catalysts for HS oxidation. The structure of the samples was characterized by electron microscopy diffraction. The morphology of the matrix strongly depends on the cobalt phthalocyanine derivative. The pathalocyanines in the titania matrices are monomeric or dimeric depending both on the type of substituents of the CoPc derivative and on the titanium alkoxide used as precursors.

[1]  U. Schubert,et al.  Metal Complexes in Inorganic Matrixes. 15.1 Coordination of Metal Ions by Lysinate-Modified Titanium and Zirconium Alkoxides and the Preparation of Metal/Titania and Metal/Zirconia Nanocomposites , 1996 .

[2]  E. Moroz,et al.  The Influence of Support on the Activity of Monolayer Vanadia-Titania Catalysts for Selective Catalytic Reduction of NO with Ammonia , 1995 .

[3]  J. Heuts,et al.  Effects of solvents on the cobalt phthalocyanine-catalyzed oxidation of hydrophobic thiols , 1995 .

[4]  A. Andreev,et al.  Catalytic activity of monomeric and polymeric cobalt(II)-phthalocyanines in sulfide ion oxidation , 1995 .

[5]  A. A. Chuiko,et al.  Metal phthalocyanines fixed onto polyorganosiloxane matrices as oxidation catalysts for HS groups , 1993 .

[6]  D. Wöhrle,et al.  Influence of substituents and ligands of various cobalt (II) porphyrin derivatives coordinately bonded to silica on the oxidation of mercaptan , 1993 .

[7]  D. Wöhrle,et al.  Structure and mercaptan oxidation activity of cobalt(II) phthalocyanines covalently bonded to silica of low surface area , 1991 .

[8]  D. Wöhrle,et al.  Low molecular weight, polymeric, and covalently bound cobalt(II)-phthalocyanines for the oxidation of mercaptans , 1991 .

[9]  D. Wöhrle,et al.  Phthalocyanines on mineral carriers, 4. Low‐molecular‐weight and polymeric phthalocyanines on SiO2, γ‐Al2O3 and active charcoal as catalysts for the oxidation of 2‐mercaptoethanol , 1989 .

[10]  V. Zakharov,et al.  Catalysis by Supported Complexes , 1981 .

[11]  J. Schutten,et al.  The role of hydrogen peroxide during the autoxidation of thiols promoted by bifunctional polymer-bonded cobaltphthalocyanine catalysts , 1980 .

[12]  J. Verkade,et al.  Constraint and electronegativity effects on selenium-77-phosphorus-31 spin-spin couplings in selenophosphoryl compounds , 1979 .

[13]  Daryle H. Busch,et al.  Complexes Derived from Strong Field Ligands. XIX. Magnetic Properties of Transition Metal Derivatives of 4,4',4",4'''-Tetrasulfophthalocyanine , 1965 .

[14]  U. Schubert,et al.  New phosphanyl-substituted titanium and zirconium alkoxide precursors for sol-gel processing , 1996 .

[15]  U. Schubert,et al.  Organically substituted titanium alkoxides with unsaturated organic groups , 1995 .

[16]  U. Schubert.  CATALYSTS MADE OF ORGANIC-INORGANIC HYBRID MATERIALS , 1994 .