Electroreactivity of isopropanol on platinum in acids studied by DEMS and FTIRS
- Autores
- Pastor Tejera, Elena; González, Sergio G.; Arvia, Alejandro Jorge
- Año de publicación
- 1995
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- 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 CO2; 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 D2O + DCIO4 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 -CH3 and -COH groups. The most probable adsorbate structures are (CH3-C-CH3)Pt, (CH3-CH-CH3)Pt and (CH3-COH-CH3)Pt, presumably accompanied by (CH3-CO-CH3)Pt.
Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas
Facultad de Ciencias Exactas - Materia
-
Ciencias Exactas
Química
isopropanol
polycrystalline
Platino (Metal)
Espectroscopía Infrarroja por Transformada de Fourier
electro-oxidation
Electroquímica - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- http://creativecommons.org/licenses/by-nc-sa/4.0/
- Repositorio
.jpg)
- Institución
- Universidad Nacional de La Plata
- OAI Identificador
- oai:sedici.unlp.edu.ar:10915/85994
Ver los metadatos del registro completo
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Electroreactivity of isopropanol on platinum in acids studied by DEMS and FTIRSPastor Tejera, ElenaGonzález, Sergio G.Arvia, Alejandro JorgeCiencias ExactasQuímicaisopropanolpolycrystallinePlatino (Metal)Espectroscopía Infrarroja por Transformada de Fourierelectro-oxidationElectroquímicaThe 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.Instituto de Investigaciones Fisicoquímicas Teóricas y AplicadasFacultad de Ciencias Exactas1995-10-10info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf233-242http://sedici.unlp.edu.ar/handle/10915/85994enginfo:eu-repo/semantics/altIdentifier/issn/1572-6657info:eu-repo/semantics/altIdentifier/doi/10.1016/0022-0728(95)04129-Cinfo:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-sa/4.0/Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-09-29T11:17:05Zoai:sedici.unlp.edu.ar:10915/85994Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-29 11:17:05.233SEDICI (UNLP) - Universidad Nacional de La Platafalse |
| dc.title.none.fl_str_mv |
Electroreactivity of isopropanol on platinum in acids studied by DEMS and FTIRS |
| title |
Electroreactivity of isopropanol on platinum in acids studied by DEMS and FTIRS |
| spellingShingle |
Electroreactivity of isopropanol on platinum in acids studied by DEMS and FTIRS Pastor Tejera, Elena Ciencias Exactas Química isopropanol polycrystalline Platino (Metal) Espectroscopía Infrarroja por Transformada de Fourier electro-oxidation Electroquímica |
| 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 |
| dc.creator.none.fl_str_mv |
Pastor Tejera, Elena González, Sergio G. Arvia, Alejandro Jorge |
| author |
Pastor Tejera, Elena |
| author_facet |
Pastor Tejera, Elena González, Sergio G. Arvia, Alejandro Jorge |
| author_role |
author |
| author2 |
González, Sergio G. Arvia, Alejandro Jorge |
| author2_role |
author author |
| dc.subject.none.fl_str_mv |
Ciencias Exactas Química isopropanol polycrystalline Platino (Metal) Espectroscopía Infrarroja por Transformada de Fourier electro-oxidation Electroquímica |
| topic |
Ciencias Exactas Química isopropanol polycrystalline Platino (Metal) Espectroscopía Infrarroja por Transformada de Fourier electro-oxidation Electroquímica |
| dc.description.none.fl_txt_mv |
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. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas Facultad de Ciencias Exactas |
| 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. |
| publishDate |
1995 |
| dc.date.none.fl_str_mv |
1995-10-10 |
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info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Articulo http://purl.org/coar/resource_type/c_6501 info:ar-repo/semantics/articulo |
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article |
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publishedVersion |
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http://sedici.unlp.edu.ar/handle/10915/85994 |
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http://sedici.unlp.edu.ar/handle/10915/85994 |
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eng |
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eng |
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