Chromium Catalysts<i>for</i>Oxidizing Automotive Exhaust

Feenan, J. J.; Anderson, R. B.; Swan, H. W.; Hofer, L. J. E.

doi:10.1080/00022470.1964.10468258

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Microreactors1

Analyses Of Sources Of Pollution1

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1964

1980

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Cited by 7 publications

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“…The convenience and rapidity of the microreactor make it especially attractive for comparing different catalysts for the same reaction {53, 72, 75, 110). Various catalysts were investigated for efficacy in the oxidation of automobile exhaust {1, 22,43,96,97); catalysis by semiconductors {28-31) was investigated by similar procedure. Silica-alumina catalysts were tested for cracking isobutane and cumene {70), for the depolymerization of ethylene {71), for the isomerization of cyclopropane {60), isobutane (77), and isopentane {64), and for the conversion of acetaldehyde {44).…”

Section: Microreactorsmentioning

confidence: 99%

The Gas Chromatographic Column as a Chemical Reactor

Langer¹,

Yurchak²,

Patton³

1969

Ind. Eng. Chem.

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Section: Microreactorsmentioning

confidence: 99%

The Gas Chromatographic Column as a Chemical Reactor

Langer¹,

Yurchak²,

Patton³

1969

Ind. Eng. Chem.

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“…Catalytic reduction of nitrogen oxides in automobile exhaust has been investigated (18, 19). Chromium and depleted uranium catalysts were used to oxidize hydrocarbons in automobile exhaust (86,278).…”

Section: Analyses Of Sources Of Pollutionmentioning

confidence: 99%

Air Pollution

Altshuller¹

1965

Anal. Chem.

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Effect of ultrasonic waves on the activity of chromia‐alumina catalyst

1972

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It has been found that the supported metal catalyst, chromia on alumina, prepared in the presence of ultrasonics (90 kHZ) is a more active catalyst for the decomposition of hydrogen peroxide (8N aqueous solution) than the catalyst prepared in the absence of ultrasonics. The catalyst preparation consisted of insonation for one hour during the impregnation stage and subsequent drying and calcination. The activity measurements were carried out at 25, 30, 40, 50 and 60°C in a batch reactor. The higher activity of the insonated catalyst has been explained on the basis that chromia is better dispersed on alumina in case of the insonated catalyst. The conclusion for the better dispersion of metal in the insonated case is based on BET surface areas and pore volumes and on electron microprobe analyser measurements of chromium metal distribution.

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Chromium CatalystsforOxidizing Automotive Exhaust

Cited by 7 publications

References 2 publications

The Gas Chromatographic Column as a Chemical Reactor

The Gas Chromatographic Column as a Chemical Reactor

Air Pollution

Effect of ultrasonic waves on the activity of chromia‐alumina catalyst

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