Effect of structure on the dehydrogenation rate of secondary alcohols on platinum, palladium and rhodium catalysts

Hájek, Milan; Duchet, J.C.; Kochloefl, K.

doi:10.1135/cccc19702258

Cited by 10 publications

(9 citation statements)

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“…Hajek, Duchet and Kochloefl [36] compared Pt, Pd, and Rh catalysts for the dehydrogenation of secondary alcohols to ketones. These authors used a Langmuir-Hinshelwood rate equation for the treatment of data and therefore were able to separate the rate constants k and adsorption coefficients of the alcohols K A .…”

Section: Catalyst Characterization By the Slopes Of Lfermentioning

confidence: 99%

Substituent Effects

Kraus

Knözinger

2008

Handbook of Heterogeneous Catalysis

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The sections in this article are Substituent, Reaction Center, and Surface Reaction Complex Mass and Specific Effects of Substituents Mass Effect Electronic Effects Steric Effects Quantitative Treatment of Substituent Effects Empirical Correlations Linear Free‐Energy Relationships Reliability of Linear Correlations Catalyst Characterization by the Slopes of LFER Substituent Effects as a Tool for Elucidation of Mechanisms Cracking of Alkylbenzenes Hydrogenation of Alkenes on Metals Dehydration of Alcohols on Oxides Hydrotreating Reactions Prospects

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Section: Catalyst Characterization By the Slopes Of Lfermentioning

confidence: 99%

Substituent Effects

Kraus

Knözinger

2008

Handbook of Heterogeneous Catalysis

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“…Zur Ermittlung der optimalen Werte der Parameter der kinetischen Gleichungen wurde die Methode der nicht-linearen Regression angewandt, die uber die minimalen Fehlerquadratsummen eine Klassifizierung der einzelnen kinetischen Modelle erlaubt (siehe auch [42]). Die verwendete ,,grid search m e t h o d ist eingehend von H a n t i l , M i t s c h k a und B e r a n e k [27] beschrieben.…”

Section: Mathematische Behandlung Der Datenunclassified

“…Dieses Kriterium wurde in analoger Weise auch von HanEil, Mitschka und Beranek [27], von H a j e k , D u c h e t und K o c h l o e f l [42] und von Mezaki und Kittrell [29] benutzt. Es mussen alle Modelle als gultig betrachtet werden, deren Fehlerquadratsumme kleiner Qkril ist.…”

Section: Mathematische Behandlung Der Datenunclassified

Dehydratisierung von Alkoholen an Al₂O₃XV. Kinetik der Dehydratisierung von tertiärem Butanol

Kochloefl

Knözinger

1971

Ber Bunsenges Phys Chem

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Es werden die kinetischen Daten der Dehydratisierung von tertiärem Butanol an Aluminiumoxid, die in einer früheren Arbeit [13] beschrieben sind, mit Hilfe der nicht‐linearen Regression hinsichtlich ihrer Beschreibbarkeit durch Langmuir‐Hinshelwood‐Modelle untersucht. Die Anfangsgeschwindigkeiten bei verschwindendem Wasserpartialdruck lassen in dem begrenzten Meßbereich keine eindeutige Entscheidung zu; zusammen mit Messungen bei verschiedenen Temperaturen und bei erhöhten Wasserpartialdrücken wird aber ein reaktionskinetisches Modell, das dissoziative Adsorption des Alkohols und molekulare Adsorption des kommenden Wassers postuliert, wahrscheinlich gemacht. Es wird dieses Ergebnis mit anderen experimentellen Ergebnissen zum Mechanismus der Olefinbildung verglichen und die Diskrepanzen werden diskutiert.

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“…THIS study wzs initiated by the observation that, when air was passed through an ethanolic solution of the azocompound (1) and cobalt (11) chloride during the preparation of the cobalt (111) complex (2),l acetaldehyde was evolved from the reaction mixture. No acetaldehyde could be detected on repeating the experiment and omitting the cobalt salt, azo-compound (l), and air in turn.…”

mentioning

confidence: 99%

“…The cobalt(I1) complex (3) of a closely related azocompound decomposes in et hanolic solution forming the cobalt (11) complex of 1 -methylbenzimidazole (4) and o-dimethylaminoaniline. The same products are obtained when the azo-compound reacts with CoC1, in ethanol.2 It is not unreasonable therefore to suppose that a related degradation could occur in the case of compound (1).…”

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confidence: 99%

Oxidation of ethanol by cobalt, iron, and rhodium complexes

Bibby¹,

Grigg²,

Price³

1977

J. Chem. Soc., Dalton Trans.

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Aerial oxidation of ethanol in the presence of an aromatic azo-compound and COX, (X = F, CI, O,CMe, or C104) or iron(ll1) chloride gives a stoicheiometric amount: of acetaldehyde with CoCI,, Co[O,CMe],, and FeCI,, but no oxidation occurs with CoF, and CO[CIO,]~. Addition of nitrogen-donor ligands promotes the oxidising activity in CoF,, and this effect is discussed and a mechanism is proposed for the oxidation. The cobalt(ii)chloride-aromatic azo-compound combination effects slow catalytic oxidation of a potassium propionate-propanol mixture. Several rhodium complexes which catalytically oxidise ethanol are reported, and 5% Rh-C dehydrogenates ethanol smoothly a t its boiling point.* Throughout this paper: 1 mmHg x 13.6 x 9.8 Pa.

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Effect of structure on the dehydrogenation rate of secondary alcohols on platinum, palladium and rhodium catalysts

Cited by 10 publications

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Substituent Effects

Substituent Effects

Dehydratisierung von Alkoholen an Al₂O₃XV. Kinetik der Dehydratisierung von tertiärem Butanol

Oxidation of ethanol by cobalt, iron, and rhodium complexes

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Effect of structure on the dehydrogenation rate of secondary alcohols on platinum, palladium and rhodium catalysts

Cited by 10 publications

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Substituent Effects

Substituent Effects

Dehydratisierung von Alkoholen an Al2O3XV. Kinetik der Dehydratisierung von tertiärem Butanol

Oxidation of ethanol by cobalt, iron, and rhodium complexes

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Dehydratisierung von Alkoholen an Al₂O₃XV. Kinetik der Dehydratisierung von tertiärem Butanol