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Небесная энциклопедия

Космические корабли и станции, автоматические КА и методы их проектирования, бортовые комплексы управления, системы и средства жизнеобеспечения, особенности технологии производства ракетно-космических систем

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Применить Всего найдено 3. Отображено 3.
17-10-2000 дата публикации

Catalyst for oxidation of volatile organic compounds

Номер: US0006132694A1
Автор: Wood; George M., Upchurch; Billy T., Schryer; David R., Davis; Patricia P., Kielin; Erik J., Brown; Kenneth G., Schyryer; Jacqueline L., D'Ambrosia; Christine M.
Принадлежит: The United States of America as represented by the Administrator of the National Aeronautics and Space Administration

Disclosed is a process for oxidizing volatile organic compounds to carbon dioxide and water with the minimal addition of energy. A mixture of the volatile organic compound and an oxidizing agent (e.g. ambient air containing the volatile organic compound) is exposed to a catalyst which includes a noble metal dispersed on a metal oxide which possesses more than one oxidation state. Especially good results are obtained when the noble metal is platinum, and the metal oxide which possesses more than one oxidation state is tin oxide. A promoter (i.e., a small amount of an oxide of a transition series metal) may be used in association with the tin oxide to provide very beneficial results.

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Номер записи: 1
17-12-1996 дата публикации

Catalytic process for formaldehyde oxidation

Номер: US0005585083A1
Автор: Kielin; Erik J., Brown; Kenneth G., D'Ambrosia; Christine M.
Принадлежит: The United States as represented by the Administrator of the National Aeronautics and Space Administration, Rochester Gas & Electric Corp.

Disclosed is a process for oxidizing formaldehyde to carbon dioxide and water without the addition of energy. A mixture of formaldehyde and an oxidizing agent (e.g., ambient air containing formaldehyde) is exposed to a catalyst which includes a noble metal dispersed on a metal oxide which possesses more than one oxidation state. Especially good results are obtained when the noble metal is platinum, and the metal oxide which possesses more than one oxidation state is tin oxide. A promoter (i.e., a small amount of an oxide of a transition series metal) may be used in association with the tin oxide to provide very beneficial results.

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Номер записи: 2
07-09-1999 дата публикации

Solid state carbon monoxide sensor

Номер: US0005948965A1
Автор: Upchurch; Billy T., Wood; George M., Schryer; David R., Leighty; Bradley D., Oglesby; Donald M., Kielin; Erik J., Brown; Kenneth G., D'Ambrosia; Christine M.
Принадлежит: The United States of America as represented by the Administrator of the National Aeronautics and Space Administration

A means for detecting carbon monoxide which utilizes an un-heated catalytic material to oxidize carbon monoxide at ambient temperatures. Because this reaction is exothermic, a thermistor in contact with the catalytic material is used as a sensing element to detect the heat evolved as carbon monoxide is oxidized to carbon dioxide at the catalyst surface, without any heaters or external heating elements for the ambient air or catalytic element material. Upon comparison to a reference thermistor, relative increases in the temperature of the sensing thermistor correspond positively with an increased concentration of carbon monoxide in the ambient medium and are thus used as an indicator of the presence of carbon monoxide.

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Номер записи: 3