Acidity control in alcohol dehydration

Luy, J.C.; Parera, J.M.

doi:10.1016/s0166-9834(00)82559-2

Cited by 43 publications

(14 citation statements)

References 19 publications

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“…Both ethanol and methanol/1-propanol mixtures lead to ether/olefin molar ratios greater than one over the entire range of composition of Mg y AlO x samples, and these ratios increase with increasing Al content. Dehydration of primary alcohols to olefins is usually the predominant reaction on strongly acidic oxides, which contain small, highly charged cations (38), whereas ether formation takes place on less acidic oxides (37,48,49). Alcohol dehydration to olefins has a higher activation energy than the competitive dehydration to ethers, and it is favored at high reaction temperatures.…”

Section: Sample Composition Surface Base Propertymentioning

confidence: 99%

Structural Requirements and Reaction Pathways in Condensation Reactions of Alcohols on MgyAlOx Catalysts

Cosimo

Ginés

Iglesia

2000

Journal of Catalysis

301

192

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Section: Sample Composition Surface Base Propertymentioning

confidence: 99%

Structural Requirements and Reaction Pathways in Condensation Reactions of Alcohols on MgyAlOx Catalysts

Cosimo

Ginés

Iglesia

2000

Journal of Catalysis

301

192

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“…The nature of these reactions depends on the history of the solids, the calcination conditions, the extent of loading and doping with certain foreign cations [5][6][7][8][9].…”

Section: Introductionmentioning

confidence: 99%

Analysis of thermally induced solid-solid interactions in vanadia-alumina system

El-Shobaky

El-Nabarawy²,

Fagal³

et al. 1996

Journal of Thermal Analysis

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V2Os/AI203 solids of varying compositions were prepared, dried at 100*C and calcined in air at 400-10000C. The solid-solid interactions between the mixed oxides were investigated by means of DTA, TG and XRD techniques.The results revealed that ammonium metavanadate and aluminium hydroxide decomposed at 260 and 290~ respectively, to yield an ammonium vanadium intermediate compound and AI~O3 as solids. The intermediate compound readily decomposed at 360~ to give V205.Solid V:Os generally catalyses the crystallization of A1203 to an extent proportional to its amount present. The solid-solid interactions between A1203 and V:O3 to produce A1V204 and AIVO4 took place at 750 and 900~ These solids decomposed entirely at 1000oC, producing V205 and alpha-corundum. The pure A1203 samples employed existed as amorphous solids even when heated in air at 750~ but in the presence of V205 (7-18 wt. %) they crystallized to thetaalumina at 600~ The pure solid alumina crystallized at 1000~ to a mixture of theta and kappaalumina. In the presence of V205, alpha-corundum together with kappa and theta phases was obtained on heating at 900~

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“…C02, CO and H2 were the only products, and DME and hydrocarbons were not formed on pure MgO. C02 formed via methyl formate decomposition [8,9] or from carbonaceous deposits (C,H, oxygen deficient compounds) that remained on the surface. On Mg~A10, and MgA10, samples, DME, C02, and CO were detected.…”

Section: Kinetic Studies Of Alcohol Coupling Reactionsmentioning

confidence: 97%

Isobutanol-methanol mixtures from synthesis gas. Quarterly report, July 1 - September 30, 1996

Iglesia¹

1996

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Acidity control in alcohol dehydration

Cited by 43 publications

References 19 publications

Structural Requirements and Reaction Pathways in Condensation Reactions of Alcohols on MgyAlOx Catalysts

Structural Requirements and Reaction Pathways in Condensation Reactions of Alcohols on MgyAlOx Catalysts

Analysis of thermally induced solid-solid interactions in vanadia-alumina system

Isobutanol-methanol mixtures from synthesis gas. Quarterly report, July 1 - September 30, 1996

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