A highly pure form of ferric citrate and an industrially viable and advantageous process for its preparation are described.

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A highly pure form of ferric citrate and an industrially viable and advantageous process for its preparation are described.

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Metal-organic frameworks (MOFs) may have Zn(II), Pb(II), and/or Cd(II) as a central metal ion, a 4,4′-bipyridylethylene (bpe) ligand as a first ligand; and fumaric acid (fum) and/or oxalic acid (ox) as a second ligand, wherein the 4,4′-bipyridylethylene ligands are stacked in the MOF, and wherein a distance between two consecutive 4,4′-bipyridylethylene ligands is less than 5 Å. Cycloadditions, particularly photoinduced [2+2] cycloadditions may be catalyzed by such MOFs, and/or the conversion of photoinduced [2+2] cycloadditions in inventive MOFs may be increased by mechanical force, such as by grinding.

Metal-organic frameworks (MOFs) may have Zn(II), Pb(II), and/or Cd(II) as a central metal ion, a 4,4′-bipyridylethylene (bpe) ligand as a first ligand; and fumaric acid (fum) and/or oxalic acid (ox) as a second ligand, wherein the 4,4′-bipyridylethylene ligands are stacked in the MOF, and wherein a distance between two consecutive 4,4′-bipyridylethylene ligands is less than 5 Å. Cycloadditions, particularly photoinduced [2+2] cycloadditions may be catalyzed by such MOFs, and/or the conversion of photoinduced [2+2] cycloadditions in inventive MOFs may be increased by mechanical force, such as by grinding.

The present invention relates to a method for preparing size-modulated UiO-66, which is achieved by modulating the concentrations of reactants, and a catalyst with improved activity of hydrolyzing chemical warfare agents prepared by the method.

The present invention relates to a method for preparing size-modulated UiO-66, which is achieved by modulating the concentrations of reactants, and a catalyst with improved activity of hydrolyzing chemical warfare agents prepared by the method.

A metal coordination polymer, in particular, a layered metal coordination polymer, can be used as a precursor to form nanostructures of various morphologies and composition. Metal based nanostructures can be prepared from the metal coordination polymers. The nanostructures may have various catalytic properties. The layered metal coordination polymer includes two or more layers, each layer including metal atoms coordinated to an organic linker to form a metal coordination polymer layer.

The titanium (IV) and iron (III) MOF solid MUV-17 (TiFe.sub.2), has general formula (1): [Ti.sup.IVFe.sup.III.sub.2(O)(L).sub.2(X).sub.3]S, where X is each equal or different selected from: O.sup.2−, OH.sup.−, H.sub.2O, F.sup.−, Cl.sup.−, Br.sup.−, I.sup.−, NO.sub.3.sup.−, ClO.sub.4.sup.−, BF.sub.4.sup.−, SCN.sup.−, OH.sup.−, CH.sub.3COO.sup.−, C.sub.5H.sub.7O.sub.2.sup.−, SO.sub.4.sup.2− and CO.sub.3.sup.2−, L is a tricarboxylic ligand and S is at least one molecule of a polar solvent selected from the group consisting of N,N′-dimethylformamide,N,N′-diethylformamide,N,N′-dimethylacetamide, N-methyl-2-pyrrolidone, methanol, ethanol, isopropanol, n-propanol, water and mixtures thereof. The titanium (IV) and iron (III) MOF solid has long-term catalytic activity for the degradation of toxic compounds. The method for obtaining them comprises dissolving the components under anaerobic conditions. The invention also relates to the use of the titanium (IV) and iron (III) MOF solid as an additive with detoxifying properties of toxic compounds.

The titanium (IV) and iron (III) MOF solid MUV-17 (TiFe.sub.2), has general formula (1): [Ti.sup.IVFe.sup.III.sub.2(O)(L).sub.2(X).sub.3]S, where X is each equal or different selected from: O.sup.2−, OH.sup.−, H.sub.2O, F.sup.−, Cl.sup.−, Br.sup.−, I.sup.−, NO.sub.3.sup.−, ClO.sub.4.sup.−, BF.sub.4.sup.−, SCN.sup.−, OH.sup.−, CH.sub.3COO.sup.−, C.sub.5H.sub.7O.sub.2.sup.−, SO.sub.4.sup.2− and CO.sub.3.sup.2−, L is a tricarboxylic ligand and S is at least one molecule of a polar solvent selected from the group consisting of N,N′-dimethylformamide,N,N′-diethylformamide,N,N′-dimethylacetamide, N-methyl-2-pyrrolidone, methanol, ethanol, isopropanol, n-propanol, water and mixtures thereof. The titanium (IV) and iron (III) MOF solid has long-term catalytic activity for the degradation of toxic compounds. The method for obtaining them comprises dissolving the components under anaerobic conditions. The invention also relates to the use of the titanium (IV) and iron (III) MOF solid as an additive with detoxifying properties of toxic compounds.

A method of obtaining a purified regenerated diacid from a depolymerization of a polyester in a waste material wherein the depolymerization provides a depolymerized mixture comprising a regenerated diol, a regenerated diacid, and a catalyst is disclosed. The method comprises: separating a regenerated composition including the regenerated acid and the catalyst from the regenerated diol; providing the regenerated composition in a liquid medium to form a pre-aged mixture; subjecting the pre-aged mixture to thermal cycling wherein the cycling occurs within 25° C. and within a temperature range of from 150° C. or more to 300° C. or less to form an aged mixture; and separating the regenerated composition from the liquid medium in the aged mixture.