Objective
Metalloporphyrin and oxometalloporphyrins containing the elements aluminium, platinum, titanium, vanadium, niobium, tantalum, chromium, molybdenum, tungsten, rhenium, ruthenium, osmium and arsenic have been synthesised and characterised. The porphyrin complexes of these metals were tested as epoxidation catalysts by use of a screening procedure. The nonmetallic elements selenium and tellurium could not be introduced into the porphyrin system. No activity was found with the porphyrin complexes of aluminium and platinum, and those of titanium, vanadium and osmium were only of minor activity. Niobium, tantalum and arsenic derivatives showed some activity, and the molybdenum, tungsten and rhenium derivatives the most promising activity.
Significant improvements in the syntheses of the porphyrin complexes of niobium, tantalum, arsenic, molybdenum, tungsten and rhenium were made. The large scale syntheses of molybdenum, tungsten and rhenium porphyrins were achieved, and complexes of these metals with porphyrin ligands of a more refined nature, especially of water soluble were synthesised. A hitherto unknown unstable reaction product of oxotungsten(V) porphyrins with hydrogen peroxide was detected.
New metalloporphyrins and transition metal bases were developed as selective homogeneous catalysts for epoxidation of olefins with hydrogen peroxide.
Electrophilicty was increased by means of novel oxomolybdenum (v), oxotungsten (v) and oxorhenium (v) porphyrin catalysts for which efficient large scale syntheses were developed, in experiments using both aqueous and anhydrous hydrogen peroxide solutions.
Nucleophilicity was increased by optimizing the catalytic behaviour of P2PtCF3X catalysts. This proved the most advantageous process studied because of the compatibility of the platinum catalysts with all grades of hydrogen peroxide.
HYDROGEN PEROXIDE IS AN ATTRACTIVE OXIDANT FROM THE STANDPOINT OF COST, AND BECAUSE WATER IS ITS ONLY REDUCTION PRODUCT NEW CATALYTIC OXIDATION SYSTEMS SHOULD ACHIEVE AN INCREASING IMPORTANCE COMPARED TO MORE CONVENTIONAL OXIDANTS.
THE OBJECTIVE OF THE PROGRAMME WAS THE DEVELOPMENT OF SELECTIVE HOMOGENEOUS OXIDATION CATALYSTS FOR REACTIONS (EPOXIDATION, HYDROXYLATION OF PHENOLS) WITH HYDROGEN PEROXIDE AS OXIDANT WHICH IN TURN IMPROVE ITS REACTIVITY, I.E. INCREASE EITHER THE ELECTROPHILICITY OR THE NUCLEOPHILICITY OF HYDROGEN PEROXIDE.
Fields of science (EuroSciVoc)
CORDIS classifies projects with EuroSciVoc, a multilingual taxonomy of fields of science, through a semi-automatic process based on NLP techniques. See: The European Science Vocabulary.
CORDIS classifies projects with EuroSciVoc, a multilingual taxonomy of fields of science, through a semi-automatic process based on NLP techniques. See: The European Science Vocabulary.
- natural sciences chemical sciences electrochemistry electrolysis
- natural sciences chemical sciences inorganic chemistry transition metals
- natural sciences chemical sciences inorganic chemistry post-transition metals
- natural sciences chemical sciences catalysis
- natural sciences chemical sciences inorganic chemistry metalloids
You need to log in or register to use this function
Programme(s)
Multi-annual funding programmes that define the EU’s priorities for research and innovation.
Multi-annual funding programmes that define the EU’s priorities for research and innovation.
Topic(s)
Calls for proposals are divided into topics. A topic defines a specific subject or area for which applicants can submit proposals. The description of a topic comprises its specific scope and the expected impact of the funded project.
Data not available
Calls for proposals are divided into topics. A topic defines a specific subject or area for which applicants can submit proposals. The description of a topic comprises its specific scope and the expected impact of the funded project.
Call for proposal
Procedure for inviting applicants to submit project proposals, with the aim of receiving EU funding.
Data not available
Procedure for inviting applicants to submit project proposals, with the aim of receiving EU funding.
Funding Scheme
Funding scheme (or “Type of Action”) inside a programme with common features. It specifies: the scope of what is funded; the reimbursement rate; specific evaluation criteria to qualify for funding; and the use of simplified forms of costs like lump sums.
Funding scheme (or “Type of Action”) inside a programme with common features. It specifies: the scope of what is funded; the reimbursement rate; specific evaluation criteria to qualify for funding; and the use of simplified forms of costs like lump sums.
Coordinator
40474 DUESSELDORF
Germany
The total costs incurred by this organisation to participate in the project, including direct and indirect costs. This amount is a subset of the overall project budget.