Electroreactivity of isopropanol on platinum in acids studied by DEMS and FTIRS
The reactivity of isopropanol on polycrystalline Pt in acid solutions was investigated using in-situ Fourier transform IR spectroscopy (FTIRS) and on-line differential electrochemical mass spectrometry (DEMS). The electro-oxidation products are acetone and CO<sub>2</sub>; the former is o...
Guardado en:
| Autores principales: | , , |
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| Formato: | Articulo |
| Lenguaje: | Inglés |
| Publicado: |
1995
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| Acceso en línea: | http://sedici.unlp.edu.ar/handle/10915/85994 |
| Aporte de: |
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I19-R120-10915-85994 |
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| record_format |
dspace |
| institution |
Universidad Nacional de La Plata |
| institution_str |
I-19 |
| repository_str |
R-120 |
| collection |
SEDICI (UNLP) |
| language |
Inglés |
| topic |
Ciencias Exactas Química isopropanol polycrystalline Platino (Metal) Espectroscopía Infrarroja por Transformada de Fourier electro-oxidation Electroquímica |
| spellingShingle |
Ciencias Exactas Química isopropanol polycrystalline Platino (Metal) Espectroscopía Infrarroja por Transformada de Fourier electro-oxidation Electroquímica Pastor Tejera, Elena González, Sergio G. Arvia, Alejandro Jorge Electroreactivity of isopropanol on platinum in acids studied by DEMS and FTIRS |
| topic_facet |
Ciencias Exactas Química isopropanol polycrystalline Platino (Metal) Espectroscopía Infrarroja por Transformada de Fourier electro-oxidation Electroquímica |
| description |
The reactivity of isopropanol on polycrystalline Pt in acid solutions was investigated using in-situ Fourier transform IR spectroscopy (FTIRS) and on-line differential electrochemical mass spectrometry (DEMS). The electro-oxidation products are acetone and CO<sub>2</sub>; the former is observed when isopropanol is present in the bulk of the solution, and the latter is produced from strongly adsorbed species. Both bulk and adsorbed isopropanol electro-reduction yield propane. H-D exchange is observed during propane formation when the reaction takes place in a D<sub>2</sub>O + DCIO<sub>4</sub> solution. This observation suggests the formation of adsorbates bonded to the surface through the C ∝ atom of the isopropanol molecule. FTIR spectra of adsorbed species show the presence of -CH<sub>3</sub> and -COH groups. The most probable adsorbate structures are (CH<sub>3</sub>-C-CH<sub>3</sub>)Pt, (CH<sub>3</sub>-CH-CH<sub>3</sub>)Pt and (CH<sub>3</sub>-COH-CH<sub>3</sub>)Pt, presumably accompanied by (CH<sub>3</sub>-CO-CH<sub>3</sub>)Pt. |
| format |
Articulo Articulo |
| author |
Pastor Tejera, Elena González, Sergio G. Arvia, Alejandro Jorge |
| author_facet |
Pastor Tejera, Elena González, Sergio G. Arvia, Alejandro Jorge |
| author_sort |
Pastor Tejera, Elena |
| title |
Electroreactivity of isopropanol on platinum in acids studied by DEMS and FTIRS |
| title_short |
Electroreactivity of isopropanol on platinum in acids studied by DEMS and FTIRS |
| title_full |
Electroreactivity of isopropanol on platinum in acids studied by DEMS and FTIRS |
| title_fullStr |
Electroreactivity of isopropanol on platinum in acids studied by DEMS and FTIRS |
| title_full_unstemmed |
Electroreactivity of isopropanol on platinum in acids studied by DEMS and FTIRS |
| title_sort |
electroreactivity of isopropanol on platinum in acids studied by dems and ftirs |
| publishDate |
1995 |
| url |
http://sedici.unlp.edu.ar/handle/10915/85994 |
| work_keys_str_mv |
AT pastortejeraelena electroreactivityofisopropanolonplatinuminacidsstudiedbydemsandftirs AT gonzalezsergiog electroreactivityofisopropanolonplatinuminacidsstudiedbydemsandftirs AT arviaalejandrojorge electroreactivityofisopropanolonplatinuminacidsstudiedbydemsandftirs |
| bdutipo_str |
Repositorios |
| _version_ |
1764820489192079362 |