Engelhard Corporation

Pascaline H Nguyen

James M Chen

James C Fu

Chung-Zong Wan

Zhicheng Hu

Michel Deeba

Patrick L Burk

John Joseph Steger

Shau-Lin Franklin Chen

Eric W Stern

Bulent O Yavuz

Ralph E Truitt

Howard J Furbeck

Shau-Lin Frank Chen

John P Maher

Methods and chemical compositions for treating a gas stream comprising non-halogenated and halogenated organic compounds while suppressing halogenation of the non-halogenated organic compounds with the oxidation products of the halogenated organic compounds in the gas stream are disclosed. The gas stream in the presence of oxygen is contacted with the catalyst compositions of the invention to oxidize the non-halogenated and the halogenated compounds to form water, carbon dioxide, and halogen molecules (Cl,, Br,, etc.) and/or halogen acids such as HCl, HBr, etc. An advantage of the present compositions and methods is that halogenation or of the treated emissions is suppressed over a process operating temperature range 400 to 550&deg; C.

Catalytic compositions and methods for suppression of halogenation of organic compounds with oxidation products of halogenated organic compounds in gaseous emission streams

A rotary regenerative catalytic oxidizer is disclosed which is a portable, compact system that catalytically destroys VOC and odorous compounds at elevated temperatures of 400 to 800&deg; F. Equipped with a very high thermally efficient rotor of 90&plus;%, most heat for reaction is retained in the apparatus, and the cleaned air at temperatures of 80 to 120 F. is safely discharged into room without causing discomfort. As a portable unit, it can be conveniently used to treat local areas where odorous and/or hazardous VOC and CO compounds are present and conveniently run off household 120V or 220V systems.

Portable rotary catalytic oxidizer systems

Methods and apparatus for the catalytic oxidation treatment of waste gas streams that contain entrained solids and gaseous air pollutants such as volatile organic compounds and carbon monoxide, and particularly methods and apparatus suitable for treating waste gas streams from wood burning processes. The method includes a step of washing the gas stream with water prior to the 5catalytic oxidation treatment.

Methods and apparatus for treating waste gas streams from wood burning

A system for the abatement of industrial process gases utilizes a rotary regenerative oxidizer comprised of one or more heat exchange beds, each bed comprised of a parallel, axial, and longitudinal array of heat regenerative channels that thermally and/or catalytically oxidize contaminated gases. Utilizing a rotary regenerative oxidizer, and if desired, a plurality of heat regenerative beds incorporated therein, facilitates the use of regenerative technology at lower gas flow rates, increases thermal efficiency, and significantly reduces the floor space normally required when implementing fixed-bed nonrotary regenerative oxidizers. The heat exchange channels may be catalytically treated to enhance oxidation of the pollutants at a lower temperature.

Rotary regenerative oxidizer

Homogeneous catalytic regenerative heat transfer packing material is made by impregnating ceramic packing material with a solution of a catalyst precursor and then fixing the precursor into catalyst form. The catalyzed packing material is suitable for use in a process for the regenerative catalytic oxidation of waste gases, in particular, gases that include volatile organic compounds, carbon monoxide or combinations thereof.

Catalyzed packing material for regenerative catalytic oxidation

Methods and chemical compositions for treating a gas stream comprising non-halogenated and halogenated organic compounds while suppressing halogenation of the non-halogenated organic compounds with the oxidation products of the halogenated organic compounds in the gas stream are disclosed. The gas stream in the presence of oxygen is contacted with the catalyst compositions of the invention to oxidize the non-halogenated and the halogenated compounds to form water, carbon dioxide, and halogen molecules (Cl.sub.2, Br.sub.2, etc.) and/or halogen acids such as HCl, HBr, etc. An advantage of the present compositions and methods is that halogenation or of the treated emissions is suppressed over a process operating temperature range 400 to 550.degree. C.

Catalytic compositions and methods for suppression of halogenation of

A catalyst and process for treating gas streams which contain halogenated organic compounds, non-halogenated organic compounds, carbon monoxide or mixtures thereof, and particularly gas streams which contain organobromides. The catalyst comprises at least one platinum group metal, zirconium oxide and at least one oxide of manganese, cerium or cobalt.

Catalytic oxidation catalyst and method for controlling voc, CO and

A method and device for treating a gas stream comprising at least one non-halogenated carbonaceous compound and optionally at least one halogenated organic compound. The gas stream, at 100.degree. C. to 650.degree. C. and in the presence of oxygen is contacted with a first catalyst in a first catalyst zone. The first catalyst comprises a first catalytic material deposited on a low acidity support material. In this zone, the non-halogenated compound is selectively reacted to form innocuous materials such as water and carbon monoxide. This can be followed by contacting the gas stream with a second catalyst in a second catalyst zone. The second catalyst comprises a second catalytic material deposited on a high acidity support material. In this zone, the halogenated organic compounds are reacted.

Catalytic method and device for controlling VOC, CO and halogenated

Catalytic oxidation catalyst and method for controlling VOC, CO and

Catalytic method and device for controlling VOC. CO and halogenated

A catalyst is disclosed for treating gas streams containing organic compounds such as halogenated organic compounds. The catalyst is comprised of vanadium oxide, zirconium oxide and at least one oxide of manganese, cerium or cobalt. Also disclosed is a process for treating gas streams using such catalysts.

Catalytic incineration of organic compounds

A composition for use in terminating a capacitor composed of a ceramic body containing embedded metal electrodes is disclosed. The end termination composition comprises a metallo organic silver material. A method for terminating a capacitor employing the metallo organic silver based composition is also disclosed.

Capacitor end termination composition and method of terminating

The present invention is directed to metallized substrates and particularly metallized substrates for use in microwave integrated circuits and a process for producing such substrates. The metallized substrates generally comprise a dielectric substrate on which is formed a pattern such as a conductor line pattern, the pattern being formed of a conductive metal. The metallization is accomplished by forming one or more adhesion layers from a metallo organic composition which is built up with a metal conductor.

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Holmdel, NJ, United States of America

Pascaline H Nguyen