977 resultados para Pulsed reactors.


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"Prepared under Contract AT(04-3)-165 with the United States Atomic Energy Commission."

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Prepared under Contract AT(04-3)-165 for the U.S. Atomic Energy Commission, San Francisco Operations Office.

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Prepared under Contract AT(04-3)-165 for the U.S. Atomic Energy Commission, San Francisco Operations Office.

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"Physics and Math. TID-4500 (15th Ed.)"--Title page.

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Mode of access: Internet.

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Includes bibliographical references.

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"Microcard edition" (2 cards. 8 x 13 cm) in pocket.

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"ANL/RAS 75-35."

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"April 1981" (v. 1); "June 1981" (v. 2)

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"National Reactor Testing Station"--Cover.

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Includes bibliographical references and index.

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In this study, a novel molecular sieve silica (MSS) membrane packed bed reactor (PBR) using a Cu/ZnO/Al2O3 catalyst was applied to the low-temperature water gas shift reaction (WGS). Best permeation results were H-2 permeances of 1.5 x 10(-6) mol(.)s(-1) m(-2) Pa-1, H-2/CO2 selectivities of 8 and H-2/N-2 selectivities of 18. It was shown that an operation with a sweep gas flow of 80 cm 3 min(-1), a feed flow rate of 50 cm(3) min(-1) and a H2O/CO molar ratio of one at 280 degreesC reached a 99% CO conversion. This is well above the thermodynamic equilibrium and achievable PBR conversion. Hydrophilic membranes underwent pore widening during the reaction while hydrophobic membranes indicated no such behaviour and also showed increased H-2 permeation with temperature, a characteristic of activated transport. (C) 2003 Elsevier Science B.V. All rights reserved.