959 resultados para by-product fuel
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Transportation Department, Washington, D.C.
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Transportation Department, Washington, D.C.
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Paper presented at the Western Economics Association meetings, June 26, 1976.
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April 17, 1963--page 11.
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"This report (SW-6p) was prepared from minutes of the meeting held March 5 and 6, 1975, in Washington, D.C."
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"Contract No. W-7405-eng-92."
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Uranium oxide has been reduced by carbon under vacuum at 2250°C, to yield a product consisting of dendritic uranium carbide in a matrix of uranium.
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Work performed at the Sylvania-Corning Nuclear Corporation under Contract AT(30-1) GEN-366.
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Work performed at the Sylvania-Corning Nuclear Corporation under contract AT-30-1 GEN-366 with the Division of Reactor Development.
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"Contract AT(30-1)-2789."
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"Authors and books consulted or quoted from": p. [v]-vi.
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Mode of access: Internet.
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Mode of access: Internet.
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Rhizome of cassava plants (Manihot esculenta Crantz) was catalytically pyrolysed at 500 °C using analytical pyrolysis–gas chromatography/mass spectrometry (Py–GC/MS) method in order to investigate the relative effect of various catalysts on pyrolysis products. Selected catalysts expected to affect bio-oil properties were used in this study. These include zeolites and related materials (ZSM-5, Al-MCM-41 and Al-MSU-F type), metal oxides (zinc oxide, zirconium (IV) oxide, cerium (IV) oxide and copper chromite) catalysts, proprietary commercial catalysts (Criterion-534 and alumina-stabilised ceria-MI-575) and natural catalysts (slate, char and ashes derived from char and biomass). The pyrolysis product distributions were monitored using models in principal components analysis (PCA) technique. The results showed that the zeolites, proprietary commercial catalysts, copper chromite and biomass-derived ash were selective to the reduction of most oxygenated lignin derivatives. The use of ZSM-5, Criterion-534 and Al-MSU-F catalysts enhanced the formation of aromatic hydrocarbons and phenols. No single catalyst was found to selectively reduce all carbonyl products. Instead, most of the carbonyl compounds containing hydroxyl group were reduced by zeolite and related materials, proprietary catalysts and copper chromite. The PCA model for carboxylic acids showed that zeolite ZSM-5 and Al-MSU-F tend to produce significant amounts of acetic and formic acids.