2010
DOI: 10.1002/ejlt.200900108
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Oxidation of a tensidic alcohol to its corresponding carboxylic acid via Au catalysts

Abstract: The oxidation of the fatty-alcohol ethoxylate GENAPOL LA 050 to its corresponding ether carboxylic acid using supported Au catalysts under mild aerobic conditions in aqueous alkaline solution was investigated. Screening of different metal oxide supports and several preparation methods yielded an assortment of highly selective catalysts with varying activities. AEROXIDE ® TiO 2 P25 turned out to be the most suitable support and deposition-precipitation with urea emerged as the best-suited preparation method.Fur… Show more

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Cited by 10 publications
(7 citation statements)
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“…The associated loss of dispersion led to a significant decrease in activity but did not influence the selectivity. 8 Recent studies also show that by changing the support material to ceria, no intermediate metal leaching could be detected in the oxidation of Genapol ® LA 070. 7 In the light of these results, the long-term stability of the standard catalyst was examined in repeated batches of both model systems.…”
Section: Long-term Stability In Repeated Batch Experimentsmentioning
confidence: 99%
“…The associated loss of dispersion led to a significant decrease in activity but did not influence the selectivity. 8 Recent studies also show that by changing the support material to ceria, no intermediate metal leaching could be detected in the oxidation of Genapol ® LA 070. 7 In the light of these results, the long-term stability of the standard catalyst was examined in repeated batches of both model systems.…”
Section: Long-term Stability In Repeated Batch Experimentsmentioning
confidence: 99%
“…Das Fettalkoholethoxylat 17 (Schema 3) wurde mit Sauerstoff und Gold auf einem Träger in hoher Selektivität zur entsprechenden Säure oxidiert. [58] Ebenso wurde das Fettsäuremonoethanolamid in das N-Acylglycinat überführt. [59] An einer Nickelhydroxidelektrode wurde in 0.5 m NaOH das ß-HydroxyethylammoniumSalz 18 zum Glycin-Betain oxidiert.…”
Section: Oxidation Von Hydroxygruppen In Fettsäurederivatenunclassified
“…2). Auch hier haben dieselben auftretenden Desaktivierungserscheinungen der seit den 1980er Jahren intensiv untersuchten Platin-und Palladiumbasierten Katalysatoren sowie deren unbefriedigende Selektivität bislang die Etablierung eines 0,3 % Au/Al 2 O 3 DP Urea [13] 0,9 % Au/TiO 2 DP NaOH [7] 1 % Au/TiO 2 DP Urea [7] 1 % Au/TiO 2 IW [7] In den letzten Jahren sind vermehrt …”
Section: Problemstellungunclassified
“…= Katalysator. [7]. Für beide Reaktionstypen besteht ein erhebliches industrielles Interesse an einem effizienten und sauberen chemisch-katalytischen Produktionsprozess.…”
Section: Problemstellungunclassified
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