摘要:
The invention provides a novel composition for bleaching cellulose based materials, such as wood pulp and paper which includes using an effective amount of a source of an oxidant and an oxidatively stable bleach activator having structure (I) wherein Y1, Y3 and Y4 each represents a bridging group having zero, one, two or three carbon containing nodes for substitution, and Y2 is a bridging group having at least one carbon containing node for substitution. Each node contains a C(R), C(R1)(R2), or a C(R)2 unit. Each R may be H, alkyl, cycloalkyl, cylcoalkenyl, alkenyl, aryl, alkynyl, alkylaryl, halogen, alkoxy, or phenoxy, CH2CF3, CF3 and combinations thereof, or form a substituted or unsubstituted benzene ring, or together with a paired R substituent bound to the same carbon atom form a cycloalkyl or cycloalkenyl ring; M is a transition metal; Q is any counterion; and L is any labile ligand.
摘要:
Embodiments of the invention provide a tetraamido macrocyclic ligand catalytic activator bound to a carbon containing support. When combined with an oxidant, such as a peroxy compound, the carbon supported catalytic activator is a long-lived, robust oxidizing agent useful for oxidizing oxidizable compounds, such as aromatic groups, conjugated pi systems, natural and synthetic hormones, pesticides, pathogens, and dyes.
摘要:
A robust chelate complex is provided having formula (I) wherein M is a metal, preferably a transition metal; Z is an anionic donor atom, at least three of which are nitrogen, and the other is preferably nitrogen or oxygen; L1 is a labile ligand; Ch1, Ch2 and Ch3 are oxidation resistant chelate groups which are the same or different and which form 5- or 6-membered rings with the metal, and Ch4 is a chelate group having structure (a) wherein R1 and R2 are the same or different and are preferably selected from the group consisting of hydrogen, halogen, methyl, and CF3 or when linked, a 5- or 6-membered ring cyclo substituent. The complex provides a stable, long-lived oxidation catalyst or catalyst activator.
摘要:
The invention provides a novel bleaching composition comprising: an oxidatively stable bleach activator having structure 1 wherein Y1, Y3 and Y4 each represent a bridging group having zero, one, two or three carbon containing nodes for substitution, and Y2 is a bridging group having at least one carbon containing node for substitution, each said node containing a C(R), C(R1)(R2), or a C(R)2 unit and each R substituent is the same or different from the remaining R substituents and is selected from the group consisting of alkyl, cycloalkyl, cycloalkenyl, alkenyl, aryl, alkynyl, alkylaryl, halogen, alkoxy or phenoxy, CH2CF3, CF3 and combinations thereof, or form a substituted or unsubstituted benzene ring of which two carbon atoms in the ring form nodes in the Y unit, or together with a paired R substituent bound to the same carbon atom form a cycloalkyl or cycloalkenyl ring, which may include an atom other than carbon, e.g., cyclopentyl or cyclohexyl; M is a transition metal with oxidation states of I, II, III, IV, V or VI, or selected from Groups 6, 7, 8, 9, 10 and 11 of the Periodic Table of the Elements; Q is any counterion which would balance the charge of the compound on a stoichiometric basis; L is any labile ligand; and an effective amount of a source of an oxidizing compound.
摘要:
The invention provides a novel composition for bleaching cellulose based materials, such as wood pulp and paper which includes using an effective amount of a source of an oxidant and an oxidatively stable bleach activator having structure (I) wherein Y1, Y3 and Y4 each represents a bridging group having zero, one, two or three carbon containing nodes for substitution, and Y2 is a bridging group having at least one carbon containing node for substitution. Each node contains a C(R), C(R1)(R2), or a C(R)2 unit. Each R may be H, alkyl, cycloalkyl, cylcoalkenyl, alkenyl, aryl, alkynyl, alkylaryl, halogen, alkoxy, or phenoxy, CH2CF3, CF3 and combinations thereof, or form a substituted or unsubstituted benzene ring, or together with a paired R substituent bound to the same carbon atom form a cycloalkyl or cycloalkenyl ring; M is a transition metal; Q is any counterion; and L is any labile ligand.
摘要:
The invention provides a novel composition and method for removing or reducing levels of recalcitrant constituents from an effluent, such as lignin chromophores, AOX species, such as chlorinated phenols, dioxins, dibenzofurans, biphenyls, and high molecular weight material produced in the pulp and paper bleaching operations which includes using a composition comprised of (a) an amount of a source of an oxidant effective for oxidizing and thereby reducing the levels of such constituents and (b) an oxidatively stable oxidant activator having structure (I), wherein Y1, Y3 and Y4 each represent a bridging group having zero, one, two or three carbon containing nodes for substitution, and Y2 is a bridging group having at least one carbon containing node for substitution, each said node containing a C(R), C(R1)(R2), or a C(R)2 unit and each R substituent is the same or different from the remaining R substituents; M is a transition metal with oxidation states of I, II, III, IV, V, VI, VII or VIII or selected from Groups 3, 4, 5, 6, 7, 8, 9, 10 and 11 of the Periodic Table of the Elements; and Q is any counterion which would balance the charge of the compound on a stoichiometric basis.
摘要:
The invention provides a novel composition and method for removing or reducing levels of recalcitrant constituents from an effluent, such as lignin chromophores, AOX species, such as chlorinated phenols, dioxins, dibenzofurans, biphenyls, and high molecular weight material produced in the pulp and paper bleaching operations which includes using a composition comprised of (a) an amount of a source of an oxidant effective for oxidizing and thereby reducing the levels of such constituents and (b) an oxidatively stable oxidant activator having structure (I), wherein Y1, Y3 and Y4 each represent a bridging group having zero, one, two or three carbon containing nodes for substitution, and Y2 is a bridging group having at least one carbon containing node for substitution, each said node containing a C(R), C(R1)(R2), or a C(R)2 unit and each R substituent is the same or different from the remaining R substituents; M is a transition metal with oxidation states of I, II, III, IV, V, VI, VII or VIII or selected from Groups 3, 4, 5, 6, 7, 8, 9, 10 and 11 of the Periodic Table of the Elements; and Q is any counterion which would balance the charge of the compound on a stoichiometric basis.
摘要:
The present method provides a method of transferring oxygen to at least one oxidizable site on a target compound. The method includes the steps of selectively oxidizing an oxidizable site on a target compound by reacting in solution: the target compound, a source of oxygen atoms, a source of a Lewis acid, such as a proton, alkali, alkaline earth, rare earth, transition metal or main group metal ion, and a catalyst. The catalyst has general structure (I) wherein Z is preferably N, but may include O and MO is a transition metal-oxo species. The Lewis acid binds to a bidentate secondary site on the Ch1 substituent to form a Lewis acid-catalyst complex.
摘要:
The invention provides a novel bleaching composition comprising: an oxidatively stable bleach activator having structure 1 wherein Y1, Y3 and Y4 each represent a bridging group having zero, one, two or three carbon containing nodes for substitution, and Y2 is a bridging group having at least one carbon containing node for substitution, each said node containing a C(R), C(R1)(R2), or a C(R)2 unit and each R substituent is the same or different from the remaining R substituents and is selected from the group consisting of alkyl, cycloalkyl, cycloalkenyl, alkenyl, aryl, alkynyl, alkylaryl, halogen, alkoxy or phenoxy, CH2CF3, CF3 and combinations thereof, or form a substituted or unsubstituted benzene ring of which two carbon atoms in the ring form nodes in the Y unit, or together with a paired R substituent bound to the same carbon atom form a cycloalkyl or cycloalkenyl ring, which may include an atom other than carbon, e.g., cyclopentyl or cyclohexyl; M is a transition metal with oxidation states of I, II, III, IV, V or VI, or selected from Groups 6, 7, 8, 9, 10 and 11 of the Periodic Table of the Elements; Q is any counterion which would balance the charge of the compound on a stoichiometric basis; L is any labile ligand; and an effective amount of a source of an oxidizing compound.