Union Carbide Corporation

James S Ritscher

Errol D Goddard

Michael R Sandner

An-Li Kuo

Desh R Garg

Daniel C Garska

Priscilla B Stanley

Toxic or otherwise contaminating organic impurity constituents in aqueous media such as waste water streams from industrial processes or potable water supplies are removed and converted to harmless oxidation products by contacting such media with an organophilic molecular sieve whereby the organic species are concentrated as adsorbates, and thereafter contacting the adsorbate-loaded molecular sieve with an aqueous solution of a compound which has a standard oxidation potential of at least 0.25 volt in an amount and for a sufficient time to convert the organic materials to non-toxic products such as CO.sub.2.

Process for removing toxic organic materials from weak aqueous solutions

A method of imparting internal mold release properties to reaction injection molding polyurethane compositions by the addition of a perfluoroalkylorganocarboxylic acid or a salt thereof. This invention also relates to the production of novel perfluoroalkylorganodibutyltindioxide compounds which are inherently catalytic and can also impart the property of internal mold releasability to RIM compositions.

Internal mold release for reaction injection molded polyurethanes

By-product effluent streams from pyrolytic hydrocarbon cracking processes, containing monoolefins and diolefins, are treated to hydrogenate the olefins and to aromatize the aliphatics, with a catalyst essentially comprising divalent-copper-containing ZSM-5 type molecular sieve catalyst.

Conversion of certain hydrocarbons using divalent-copper-containing

A unique class of copper zeolite combustion catalysts which are both highly siliceous and contain an extraordinary amount of zeolitic divalent copper cations which are prepared by ion exchanging the predominantly alkali metal cation form of ZSM-5 type zeolites with divalent copper cations and subjecting the resulting compositions to rigorous oxidation.

Combustion catalyst and process for using same

A process for the catalytic combustion of carbon monoxide and hydrocarbons and the catalytic reduction of the oxides of nitrogen contained in a gas stream. The process involves intimately contacting the gaseous stream with a catalyst bed comprising copper metal or copper ion and a high silica zeolite.

Three-way catalytic process for gaseous streams

A process for the catalytic combustion of an organic substrate which comprises intimately contacting the organic substrate, comprised of one or more components, with an adsorption/combustion catalyst bed comprised of a metal-containing zeolite wherein the metal is at least one of platinum palladium, copper nickel, chromium and manganese. After sufficient organic substrate is adsorbed by the catalyst bed the substrate is combusted by an adiabatic temperature rise of the catalyst bed. The process is particularly well-suited for the removal of an organic substrate from a dilute stream.

Growing community of inventors

Ossining, NY, United States of America

James S Ritscher