Regulatory Standards - Environmental Protection Agency www.epa.gov/cleandiesel/reg-prog.htm Beginning June 1, 2006, refiners began producing ultra-low sulfur diesel fuel with ... In addition, emission standard for large commercial marine diesel vessels ...
Within a year of the new EPA standard Ruthenium roofed it!
.Ruthenium disulfideappears to be the single most active catalyst, (in the refinery desulphiseration process).
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Within a year of the new EPA standard Ruthenium roofed it!