Aggregates of ceric oxide crystallites and reduction of vehicula

Fuel and related compositions – Liquid fuels – Aluminum or heavy metal – other than lead – containing

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44358, 44363, 44500, C10L 112, C10L 130

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060932236

ABSTRACT:
Vehicular emissions are reduced/purified via combustion of the hydrocarbon fuel therefor, e.g., diesel fuel, in the presence of a cerium compound, preferably a cerium (IV) compound, to produce soots having depressed ignition temperatures that contain effective purifying amounts of aggregates of ceric oxide crystallites, the largest particle size dimension of which ranging from 50 .ANG. (5 nanometers) to 10,000 .ANG. (1,000 nanometers) and the crystallite sizes of which, measured by Debye-Scherrer technique, ranging from 50 .ANG. (5 nanometers) to 250 .ANG. (25 nanometers).

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