The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 22, 2000
Filed:
Oct. 21, 1996
Massachusetts Institute of Technology, Cambridge, MA (US);
Abstract
A system is provided including an article having a surface and a catalytic metal atom, capable of oxidation, covalently immobilized at the surface via a plurality of covalent bonds, but being free of direct covalent bonding to the surface. In particular, the invention relates to inorganic surfaces including silica, alumina, niobium oxide, or tantalum oxide, or a combination thereof and catalytic metal atoms including Fe, Mn, Cr, Ni, Co, Ru, and Os. The catalytic metal atom, covalently immobilized at the surface via a plurality of covalent bonds, can be immobilized via bonding through at least one atom that is bonded directly to the surface. The article preferably is an inorganic, mesoporous structure, in the pores of which are covalently bonded a plurality of metalloporphyrins. In particular, the catalytic metal atom, such as iron, manganese, chromium, nickel, cobalt, rhenium, and osmium are covalently bonded to a porphyrin structure which is bonded to an alumina or silica surface via bonds between the amine groups of the porphyrin structure of the alumina or silica surface. The invention also discloses supporting the catalytic metal atom bonded to the porphyrin structure via amine groups in the porphyrin and dopant atoms of the alumina or silica surface. Dopant atoms can include niobium and tantalum atoms.