About: FTIR study of the interaction of crotonaldehyde and maleic anhydride with V2O5 and MoO3     Goto   Sponge   NotDistinct   Permalink

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  • The adsorption of crotonaldehyde and maleic anhydride on MoO3, resp. V2O5 has been studied by FTIR spectroscopy. Crotonaldehyde was adsorbed mainly in molecular form due to hydrogen bonds with Brönsted acid sites of these oxides (physical adsorption) at room temperature. Stable surface complexes (coordinatively bonded crotonaldehyde, carbonyl compounds and carboxylates) were found during the adsorption of crotonaldehyde on MoO3, resp. V2O5 at 298-573 K. Carboxylates and consecutively maleic anhydride were products of reaction between crotonaldehyde and active sites of V2O5 surface at high temperatures in the atmosphere of reaction gas. Maleic anhydride was physically adsorbed on MoO3, resp. V2O5 via hydrogen bonds with surface hydroxyls.
  • The adsorption of crotonaldehyde and maleic anhydride on MoO3, resp. V2O5 has been studied by FTIR spectroscopy. Crotonaldehyde was adsorbed mainly in molecular form due to hydrogen bonds with Brönsted acid sites of these oxides (physical adsorption) at room temperature. Stable surface complexes (coordinatively bonded crotonaldehyde, carbonyl compounds and carboxylates) were found during the adsorption of crotonaldehyde on MoO3, resp. V2O5 at 298-573 K. Carboxylates and consecutively maleic anhydride were products of reaction between crotonaldehyde and active sites of V2O5 surface at high temperatures in the atmosphere of reaction gas. Maleic anhydride was physically adsorbed on MoO3, resp. V2O5 via hydrogen bonds with surface hydroxyls. (en)
  • Adsorpce krotonaldehydu a anhydridu kyseliny maleinové na povrchu V2O5 a MoO3 byla studována pomocí FTIR spektroskopie. Při laboratorní teplotě je krotonaldehyd v největší míře slabě vázán na Brönstedovská kyselá centra díky vodíkovým můstkům. Během adsorpce krotonaldehydu na povrchu V2O5 a MoO3 při teplotách 298-573 K byly nalezeny tyto stabilní povrchové komplexy: koordinačně vázaný krotonaldehyd, karbonylové sloučeniny a karboxyláty. Hlavními produkty reakce mezi krotonaldehydem a aktivními centry V2O5 při vysokých teplotách byly karboxyláty a následně anhydrid kyseliny maleinové. Anhydrid kyseliny maleinové byl po kontaktu s V2O5 a MoO3 vázán pouze slabou interakcí (fyzikální adsorpce) pomocí vodíkové vazby s povrchovými OH skupinami. (cs)
Title
  • FTIR studie interakce krotonaldehydu a anhydridu kyseliny maleinové s V2O5 a MoO3 (cs)
  • FTIR study of the interaction of crotonaldehyde and maleic anhydride with V2O5 and MoO3
  • FTIR study of the interaction of crotonaldehyde and maleic anhydride with V2O5 and MoO3 (en)
skos:prefLabel
  • FTIR studie interakce krotonaldehydu a anhydridu kyseliny maleinové s V2O5 a MoO3 (cs)
  • FTIR study of the interaction of crotonaldehyde and maleic anhydride with V2O5 and MoO3
  • FTIR study of the interaction of crotonaldehyde and maleic anhydride with V2O5 and MoO3 (en)
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  • RIV/00216275:25310/04:00003379!RIV08-MSM-25310___
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  • 27-31
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  • RIV/00216275:25310/04:00003379
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  • FTIR spectroscopy; adsorption forms; crotonaldehyde; maleic anhydride (en)
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  • NL - Nizozemsko
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  • [A3EE5855E772]
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  • Appl. Catal. A: General
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  • 269
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  • Lochař, Václav
  • Drobná, Helena
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  • 25310
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