Effect of Additives on Gasoline Engine Deposits

Albright, R. E.; Nelson, F. L.; Raymond, Leonard

doi:10.1021/ie50473a006

Cited by 6 publications

(1 citation statement)

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“…Various substances have been recorded (Albright, Nelson & Raymond, 1949;Walters & Busso, 1949) which delay the decomposition of solutions of lead tetraethyl. These included commercial cresylic acids, I-naphthol, NN-dimethyl-p-phenylenediamine, I : 2-dihydroxy-4-tert.-butylbenzeneY I : 3-dihydroxy-4-n-hexylbenzene, and 1-hydroxy-3-methyl-6-n-amylbenzene, but none of these has been found to retard appreciably the photochemical decomposition of chromium hexacarbonyl solutions.…”

Section: Photochemical Decompositionmentioning

confidence: 99%

Chromium hexacarbonyl. I. The preparation and stability of chromium hexacarbonyl

Cumming¹,

Horn²,

Ritchie³

1952

J. Appl. Chem.

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I. Recorded methods for preparing chromium hexacarbonyl are reviewed and critically compared. Previous theories on the mechanism of formation from carbon monoxide, chromic chloride, and a Grignard reagent are not wholly satisfactory, and an alternative mechanism is proposed, entailing the formation of an intermediate organo‐chromium‐III dibaiide. II. Hydrocarbon solutions of chromium hexacarbonyl are decomposed on exposure, in the presence of oxygen, to radiation in the near ultra‐violet, forming an insoluble gelatinous precipitate. In the presence of a molar equivalent of a long‐chain fatty acid, such as stearic acid, precipitation is inhibited, though the carbonyl still decomposes to hydrocarbon‐soluble products. The mechanism of decomposition and inhibition is still obscure.

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Section: Photochemical Decompositionmentioning

confidence: 99%