Exxon Research and Engineering Company

John M Longo

Harold S Horowitz

Joseph T Lewandowski

Chin H Chang

Edward T Maas, Jr

David William Savage

LeRoy R Clavenna

Joel I Haberman

John Joseph Steger

Robert P Cahn

Neville L Cull

Franklin J Wright

Kenneth R Poeppelmeier

Hugh H Horowitz

A method for electrocatalytically reacting various oxidizable organic compounds by introducing current by means of an anode into an electrolyte of a cell containing the oxidizable organic compound. The anode comprises an electrocatalyst material which has at least one compound of the formula:

Method of electrocatalytic oxidation of organic compounds

Oxygen deficient manganese compounds of the formula CaMnO.sub.2.5 and Ca.sub.2 MnO.sub.3.5 have been prepared by the relatively low temperature reduction of precursors having the formula CaMnO.sub.3 and Ca.sub.2 MnO.sub.4, respectively. These compounds have a perovskite-type structure and are useful in processes requiring solid oxidizing agents, such as oxidative dehydrogenation processes.

Oxygen deficient manganese perovskites

A gas containing oxygen, H.sub.2 S and sulfur oxides is desulfurized by contacting same with cerium oxide at a temperature of from about 350.degree.-600.degree. C. This invention is particularly useful for desulfurizing tail gas from a Claus plant. In a preferred embodiment the cerium oxide is supported on alumina and oxygen is present in the gas in an amount more than that stoichiometrically required to convert the H.sub.2 S and SO.sub.2 to cerium oxysulfate.

Desulfurization of hot gas with cerium oxide

Nonstoichiometric carbon-sulfur compounds have been found to be effective adsorbents for separating organic vapors from a gaseous mixture. Separation of aromatic compounds from gaseous mixtures is particularly effective using such compounds. The spent adsorbent may then be regenerated.

Vapor phase adsorption using nonstoichiometric carbon-sulfur compounds

A combination process is provided in which a gaseous mixture comprising SO.sub.x and NO.sub.x is reacted with cerium oxide at a temperature ranging from about 500.degree. C. to about 700.degree. C. to form cerium oxysulfate and a gas which is at least partially desulfurized. The latter is contacted with cerium oxysulfate at a temperature ranging from about 500.degree. C. to about 700.degree. C. in the presence of ammonia at net oxidizing conditions to reduce the NO.sub.x content of the gaseous mixture. The process may be conducted in one reaction zone or in a plurality of reaction zones. The cerium oxide reactant may be regenerated by reacting cerium oxysulfate with a reducing gas such as hydrogen.

Process for the removal of SO.sub.x and NO.sub.x from gaseous mixture

A method of preparing electrically conductive pyrochlore compounds having the formula:

Method of making lead and bismuth pyrochlore compounds using an alkaline

A liquid solution method of preparing electrically conductive pyrochlore compounds having the formula:

Method of making lead and bismuth ruthenate and iridate pyrochlore

Nonstoichiometric carbon-sulfur compounds have been found to be effective adsorbents for removing a wide variety of organic and/or inorganic materials from liquids, preferably polar liquids. Removal of biorefractory organics, such as aromatics, is particularly effective using such compounds. The spent adsorbent may then be regenerated.

Use of nonstoichiometric carbon-sulfur compounds to remove components

A liquid solution method of preparing electrically conductive pyrochlore compounds of high surface area, having the formula:

Method of making lead-rich and bismuth-rich pyrochlore compounds using

Method of making stoichiometric lead and bismuth pyrochlore compounds

Novel bismuth-rich pyrochlore-type compounds are described having the formula:

Bi.sub.2 [M.sub.2-x Bi.sub.x ]O.sub.7-y compounds wherein M is Ru, Ir or

The present invention is directed to an electric current-producing cell which contains: (a) an anode having as its anode-active material one or more alkali metals; (b) a cathode having as its cathode-active material one or more polymer compounds having a plurality of carbon monosulfide units; and (c) an electrolyte which is chemically inert with respect to said anode and said cathode and which permits the migration of ions between said anode and said cathode.

Cells having cathodes containing carbon monosulfide polymer

An electrochemical device is described which has an oxygen electrode which contains a pyrochlore type electrocatalyst material. This electrocatalyst material is one or more electrically conductive pyrochlore compounds selected from the compounds of the following formula:

Electrochemical device having an oxygen electrode containing a

The present invention is directed to an electric current-producing cell which contains: (a) an anode having as its anode-active material one or more alkali metals; (b) a cathode having as its cathode-active material one or more carbon-sulfur compounds having the formula: C.sub.x S, wherein x is a numerical value within the range of about 4 to about 50; and, (c) an electrolyte which is chemically inert with respect to said anode and said cathode and which permits the migration of ions between said anode and said cathode.

Cells having cathodes containing C.sub.s S cathode-active materials

Materials of the general formula MXY.sub.3 wherein M is selected from the group consisting of Mg, V, Mn, Fe, Co, Ni, Zn, Cd, Sn, Pb and mixtures thereof; X is a pnictide selected from the group consisting of phosphorus, arsenic, antimony, and mixtures thereof, and Y is a chalcogenide selected from the group consisting of sulfur, selenium and mixtures thereof, have been discovered to be superior lubricants exhibiting resistance to oxidation and thermal degradation, low friction, excellent antiwear activity and long effective life. Metal surfaces coated with such materials resist gauling and damage due to adhesive or corrosive wear. These materials can be used as dry solid lubricants or as additives to oils and greases.

Growing community of inventors

New Providence, NJ, United States of America

John M Longo