Some Phenomena Which Control Sulfuric Acid Emission from Automotive Catalysts

Hammerle, R. H.; Mikkor, M.

doi:10.4271/750097

Cited by 13 publications

(7 citation statements)

References 3 publications

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“…A/F = 15.0. ( ^SO^in (Xso2)£ as a function of temperature was calculated by Hammerle and Mikkor (19), and their .result is reproduced here in Figure 18. (.Xso2)out (which is the same as C/100) was measured in the present experiments (Figure 6).…”

Section: Resultsmentioning

confidence: 79%

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Sulfate and particulate emissions from an oxidation catalyst equipped engine

Ander.¹,

Springer²

1977

Environ. Sci. Technol.

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Section: Resultsmentioning

confidence: 79%

“…Mikkor et al (18), Hammerle and Mikkor (19), and Hammerle and Truex (20) also measured sulfur conversion. Their data are not included here because instead of an engine they used a simulated exhaust system.…”

Section: Resultsmentioning

confidence: 99%

Sulfate and particulate emissions from an oxidation catalyst equipped engine

Ander.¹,

Springer²

1977

Environ. Sci. Technol.

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“…S02 removal can occur by either the adsorption of S02 on the A1203, or by the oxidation of S02 and SO3. Characteristically, the initial adsorption of S02 was rapid followed by a more gradual uptake (5,6).…”

Section: Resultsmentioning

confidence: 99%

Reaction of sulfur oxides with alumina and platinum/alumina

Summers¹

1979

Environ. Sci. Technol.

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“…Trace metals exist in different forms in the sediment-water system (1)(2)(3)(4). Part of the trace metals may stay in interstitial waters as free or complexed ions or loosely adsorbed on solids.…”

Section: Discussionmentioning

confidence: 99%

Sulfate formation: Catalyst and gas-phase composition effects in pulsators and comparison of three-way with oxidation catalysts

Gandhi¹,

Otto²,

Piken³

et al. 1977

Environ. Sci. Technol.

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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, element cost will be reduced in direct proportion to the number of regenerations. Additionally the labor cost in regeneration is very small compared to that involved in changing elements. A design has been presented (2, 10) which allows large scale filter/coalescer units to be constructed using filter press construction and stabilized fiber glass medium.

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Some Phenomena Which Control Sulfuric Acid Emission from Automotive Catalysts

Cited by 13 publications

References 3 publications

Sulfate and particulate emissions from an oxidation catalyst equipped engine

Sulfate and particulate emissions from an oxidation catalyst equipped engine

Reaction of sulfur oxides with alumina and platinum/alumina

Sulfate formation: Catalyst and gas-phase composition effects in pulsators and comparison of three-way with oxidation catalysts

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