1977
DOI: 10.1021/es60125a009
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Sulfate formation: Catalyst and gas-phase composition effects in pulsators and comparison of three-way with oxidation catalysts

Abstract: breakthrough time is inversely proportional to velocity. However, a change in inlet concentration from 100 to 200 ppm (Figure 7 ) does not affect breakthrough time significantly. Apparently, an increase in inlet concentration does not increase rate of saturation of bed due to accompanying increase in flow of coalesced drops on downstream side.A major cost factor in using present day filter/coalescers is the replacement cost of the one-shot cartridges which are generally used. Since the steam cost is negligible… Show more

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Cited by 10 publications
(2 citation statements)
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“…Although the pulse-flame generator (Otto et al, 1974) does not duplicate processes such as flame quenching by cylinder walls and the mixing which occurs in an engine, it does provide a convenient laboratory method for the controlled combustion of fuels and the rapid transport of the combustion products to a subsystem for study. The pulse-flame generator has been used as a method for studying performance of automotive exhaust catalysts under various conditions yielding results which correlate well with results from engine studies (Otto et al, 1974;Otto and Montreuil, 1976; Gandhi et al, 1977; Otto and Sulak, 1978).…”
Section: Introductionmentioning
confidence: 67%
“…Although the pulse-flame generator (Otto et al, 1974) does not duplicate processes such as flame quenching by cylinder walls and the mixing which occurs in an engine, it does provide a convenient laboratory method for the controlled combustion of fuels and the rapid transport of the combustion products to a subsystem for study. The pulse-flame generator has been used as a method for studying performance of automotive exhaust catalysts under various conditions yielding results which correlate well with results from engine studies (Otto et al, 1974;Otto and Montreuil, 1976; Gandhi et al, 1977; Otto and Sulak, 1978).…”
Section: Introductionmentioning
confidence: 67%
“…These changes are not very large and are probably partially caused by Mn deposits upstream of the catalyst. The activity of catalysts containing metals of the Pt-group toward the formation of sulfuric acid was very sensitive to aging and poisoning, when measured as a function of CO concentration in previous pulse-flame tests (11). For this reason, we compared the catalyst buttons, aged in the MMT program, for their activity in the formation of SO3.…”
Section: Resultsmentioning
confidence: 99%