Polyhedral Oligometallasilsesquioxanes as Models for        Silica-Supported Catalysts
{'Code': '03090005', 'Directorate': {'Abbreviation': 'MPS', 'LongName': 'Direct For Mathematical & Physical Scien'}, 'Division': {'Abbreviation': 'CHE', 'LongName': 'Division Of Chemistry'}}
{'SignBlockName': 'John B. Hunt', 'PO_EMAI': None, 'PO_PHON': None}
Silica, a porous solid material made by purifying and melting                   sand, is used widely as a solid support for industrial catalysts.               Such catalysts often consist of metal atoms or metal-containing                 molecules partially buried in the silicon-oxygen framework at the               silica surface.  In work preliminary to that proposed here                      molecules based on the silicon-oxygen framework, but soluble in                 organic solvents, were synthesized.  Metal adducts of these                     molecules are expected to be excellent models of the silica-based               catalysts, with the advantage that they can be studied by a                     variety of techniques to which surface catalysts are not                        amenable.  The studies should lead to a more profound                           understanding of silica-based catalysts and provide information                 needed for the rational design of better catalysts.                                                                                                             The aim of our research is to develop a new class of transition-                metal-containing siloxane macromolecules, called polyhedral                     oligometallasilsequioxanes(POMSS), that can be used to model                    reaction processes that occur on silica-supported metal-oxide                   catalysts.  The proposed research is focussed on three major                    areas:                                                                                  1)  Synthesis and Reactivity Studies of Ti and Zr-                      Containing POMSS:  By examining the reactivity of Ti and Zr-                    containing POMSS with substrates such as carbon monoxide,                       hydrogen, oxygen, ethylene, acetylene, etc., it is proposed to                  "finger-print" the inherent chemical reactivity of these                        interesting new complexes.                                                              2)  Reactivity Studies of V-Containing POMSS:  V-containing             POMSS will be used to gain access to reactive intermediates that                are believed to be involved in VO(OR)3-catalyzed oxidations of                  hydrocarbons by alkyl hydroperoxides and hydrogen peroxide.                          3)  Synthesis of POMSS Containing Group VII and VIII                       Transition-Metals:  Several synthetic approaches to POMSS                       containing late transition-metals will be used in efforts to                    develop the trisilanol ligand into a general ligand that can be                 used as a silica model with virtually any transition-metal.
{'FirstName': 'Frank', 'LastName': 'Feher', 'PI_MID_INIT': 'J', 'PI_SUFX_NAME': None, 'PI_FULL_NAME': 'Frank J Feher', 'EmailAddress': 'fjfeher@uci.edu', 'NSF_ID': '000226355', 'StartDate': '06/01/1987', 'EndDate': None, 'RoleCode': 'Principal Investigator'}
{'Name': 'University of California-Irvine', 'CityName': 'IRVINE', 'ZipCode': '926970001', 'PhoneNumber': '9498247295', 'StreetAddress': '160 ALDRICH HALL', 'StreetAddress2': None, 'CountryName': 'United States', 'StateName': 'California', 'StateCode': 'CA', 'CONGRESSDISTRICT': '47', 'CONGRESS_DISTRICT_ORG': 'CA47', 'ORG_UEI_NUM': 'MJC5FCYQTPE6', 'ORG_LGL_BUS_NAME': 'UNIVERSITY OF CALIFORNIA IRVINE', 'ORG_PRNT_UEI_NUM': 'MJC5FCYQTPE6'}
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[{'Code': '193800', 'Text': 'Chemical Instrumentation'}, {'Code': '196600', 'Text': 'SYNTHETIC INORGANIC'}]
{'url': 'https://www.nsf.gov/awardsearch/download?DownloadFileName=1987&All=true', 'xml': '8703016.xml'}