Northeastern University

US Government As Represented by the Secretary of the Army

Tufts University

Geoffrey Davies

Ahmed El-Toukhy

Nagwa El-Kady

Kenneth J Balkus, Jr

Louis G Carreiro

Samuel P Kounaves

Albert Robbat, Jr

James V Marzik

Tarek M Abdel-Fattah

Hui-Li Shao

The invention features metal-containing catalysts including a crystalline microporous metal oxide structure encapsulating an amount of metal which reflects the amount of metal introduced into the metal oxide structure.

Metal containing catalysts and methods for making same

The invention provides metal-phosphorus-nitrogen polymer compounds and methods for their preparation at low temperatures using readily available starting materials. One group of compounds, metal-phosphazene polymers, are comprised of repeating units of [PN].sub.3 rings linked to form polymers through P--X--M--X--P bonds. The linking atoms X are either NH.sub.2 or O, and M is a metal cation. Another group of the compounds have the generic formula M.sub.a (P.sub.2 O.sub.5).sub.b (NH.sub.3).sub.c O.sub.d.eH.sub.2 O. If the metal-phosphorus-nitrogen polymers are heated to a sufficiently high temperature to reduce the nitrogen/phosphorus ratio, additional novel solid metal phosphorus compounds of the invention are formed, many of which have a foamed, porous structure. The properties of the compounds of the invention can be varied by choice of metal and reaction conditions to create materials having useful conductive, magnetic, optical, catalytic, or ion-exchange properties.

Metal phosphorus nitrogen polymers, metal phosphorus compounds and

Metal-phosphorus-nitrogen polymers, metal-phosphorus compounds and

A novel method for making metals and homogeneous metal alloys comprises the steps of (a) providing a polymetallic complex of the general formula

Metal, metal alloy, and metal oxide formation by electrodeposition of

A method for forming a single-phase, homogeneous and high surface area metal alloy by reducing a heteropolymetallic complex in the presence of H.sub.2 at a low temperature. Also disclosed is a method for forming a single-phase, homogeneous and high surface area metal alloy by thermolysis of a heteropolymetallic complex in an inert atmosphere at a low temperature.

Direct alloy synthesis from heteropolymetallic precursors

A method for forming a single-phase, homogeneous and high surface area metal alloy by reducing a polyheterometallic complex at a low temperature in hydrogen-containing gas.

Metal alloy formation by reduction of polyheterometallic complexes

Coal liquid fractions to be used as fuels are stabilized against gum formation and viscosity increases during storage, permitting the fuel to be burned as is, without further expensive treatments to remove gums or gum-forming materials. Stabilization is accomplished by addition of cyclohexanol or other simple inexpensive secondary and tertiary alcohols, secondary and tertiary amines, and ketones to such coal liquids at levels of 5-25% by weight with respect to the coal liquid being treated. Cyclohexanol is a particularly effective and cost-efficient stabilizer. Other stabilizers are isopropanol, diphenylmethanol, tertiary butanol, dipropylamine, triethylamine, diphenylamine, ethylmethylketone, cyclohexanone, methylphenylketone, and benzophenone. Experimental data indicate that stabilization is achieved by breaking hydrogen bonds between phenols in the coal liquid, thereby preventing or retarding oxidative coupling. In addition, it has been found that coal liquid fractions stabilized according to the invention can be mixed with petroleum-derived liquid fuels to produce mixtures in which gum deposition is prevented or reduced relative to similar mixtures not containing stabilizer.

Process for stabilization of coal liquid fractions

Coal liquid fractions to be used as fuels are stabilized against gum formation and viscosity increases during storage, permitting the fuel to be burned as is, without further expensive treatments to remove gums or gum-forming materials. Stabilization is accomplished by addition of cyclohexanol or other simple inexpensive secondary and tertiary alcohols, secondary and tertiary amines, and ketones to such coal liquids at levels of 5-25% by weight with respect to the coal liquid being treated. Cyclohexanol is a particularly effective and cost-efficient stabilizer. Other stabilizers are isopropanol, diphenylmethanol, tertiary butanol, dipropylamine, triethylamine, diphenylamine, ethylmethylketone, cyclohexanone, methylphenylketone, and benzophenone. Experimental data indicate that stabilization is achieved by breaking hydrogen bonds between phenols in the coal liquid, thereby preventing or retarding oxidative coupling.

Growing community of inventors

Lexington, MA, United States of America

Geoffrey Davies