Comparisons of formic acid oxidation at supported Pt catalyst and at low-index Pt single crystal electrodes in sulfuric acid solution
Poređenje oksidacije mravlje kiseline na PT katalizatoru na nosaču i na niskoindeksnim PT monokristalima u sumpornoj kiselini
Апстракт
The oxidation of formic acid was studied at supported Pt catalyst (47.5 wt%. Pt) and a low-index single crystal electrodes in sulfuric acid. The supported Pt catalyst was characterized by the TEM and HRTEM techniques. The mean Pt particle diameter, calculated from electrochemical measurements fits well with Pt particle size distribution determined by HRTEM. For the mean particle diameter the surface averaged distribution of low-index single crystal facets was established. Comparison of the activities obtained at Pt supported catalyst and low-index Pt single crystal electrodes revealed that Pt(111) plane is the most active in the potential region relevant for fuel cell applications.
Oksidacija mravlje kiseline ispitivana je na Pt katalizatoru nanetom na aktivni ugalj (47,5 mas % Pt) i na nisko-indeksnim Pt monokristalnim elektrodama u sumpornoj kiselini. Prvi katalizator je okarakterisan korišćenjem tehnika transmisione elektronske mikroskopije niske (TEM) i visoke rezolucije (HRTEM), pri čemu je određena distribucija, veličina i oblik nanočestica Pt. Srednji prečnik nanočestica, izračunat iz elektro hemijskih merenja, saglasan je raspodeli veličina čestica dobijenoj HRTEM analizom. Na osnovu srednjeg prečnika nanočestica data je prosečna distribucija (111), (100) i (110) mesta na površini katalizatora na nosaču. Ovaj katalizator je aktivniji u oksidaciji mravlje kiseline od monokristalnih Pt elektroda orijentacije (100) i (110), ali je manje aktivan od Pt(111) elektrode u oblasti potencijala relevantnoj za primenu u gorivnom spregu.
Кључне речи:
formic acid oxidation / Pt single crystals / supported Pt catalyst / particle size / surface distribution of crystallographic sitesИзвор:
Journal of the Serbian Chemical Society, 2003, 68, 11, 849-857Издавач:
- Serbian Chemical Society
DOI: 10.2298/JSC0311849T
ISSN: 0352-5139
WoS: 000187394400009
Scopus: 2-s2.0-1442286245
Институција/група
IHTMTY - JOUR AU - Tripković, Amalija AU - Popović, Ksenija AU - Lović, Jelena PY - 2003 UR - https://cer.ihtm.bg.ac.rs/handle/123456789/107 AB - The oxidation of formic acid was studied at supported Pt catalyst (47.5 wt%. Pt) and a low-index single crystal electrodes in sulfuric acid. The supported Pt catalyst was characterized by the TEM and HRTEM techniques. The mean Pt particle diameter, calculated from electrochemical measurements fits well with Pt particle size distribution determined by HRTEM. For the mean particle diameter the surface averaged distribution of low-index single crystal facets was established. Comparison of the activities obtained at Pt supported catalyst and low-index Pt single crystal electrodes revealed that Pt(111) plane is the most active in the potential region relevant for fuel cell applications. AB - Oksidacija mravlje kiseline ispitivana je na Pt katalizatoru nanetom na aktivni ugalj (47,5 mas % Pt) i na nisko-indeksnim Pt monokristalnim elektrodama u sumpornoj kiselini. Prvi katalizator je okarakterisan korišćenjem tehnika transmisione elektronske mikroskopije niske (TEM) i visoke rezolucije (HRTEM), pri čemu je određena distribucija, veličina i oblik nanočestica Pt. Srednji prečnik nanočestica, izračunat iz elektro hemijskih merenja, saglasan je raspodeli veličina čestica dobijenoj HRTEM analizom. Na osnovu srednjeg prečnika nanočestica data je prosečna distribucija (111), (100) i (110) mesta na površini katalizatora na nosaču. Ovaj katalizator je aktivniji u oksidaciji mravlje kiseline od monokristalnih Pt elektroda orijentacije (100) i (110), ali je manje aktivan od Pt(111) elektrode u oblasti potencijala relevantnoj za primenu u gorivnom spregu. PB - Serbian Chemical Society T2 - Journal of the Serbian Chemical Society T1 - Comparisons of formic acid oxidation at supported Pt catalyst and at low-index Pt single crystal electrodes in sulfuric acid solution T1 - Poređenje oksidacije mravlje kiseline na PT katalizatoru na nosaču i na niskoindeksnim PT monokristalima u sumpornoj kiselini VL - 68 IS - 11 SP - 849 EP - 857 DO - 10.2298/JSC0311849T ER -
@article{ author = "Tripković, Amalija and Popović, Ksenija and Lović, Jelena", year = "2003", abstract = "The oxidation of formic acid was studied at supported Pt catalyst (47.5 wt%. Pt) and a low-index single crystal electrodes in sulfuric acid. The supported Pt catalyst was characterized by the TEM and HRTEM techniques. The mean Pt particle diameter, calculated from electrochemical measurements fits well with Pt particle size distribution determined by HRTEM. For the mean particle diameter the surface averaged distribution of low-index single crystal facets was established. Comparison of the activities obtained at Pt supported catalyst and low-index Pt single crystal electrodes revealed that Pt(111) plane is the most active in the potential region relevant for fuel cell applications., Oksidacija mravlje kiseline ispitivana je na Pt katalizatoru nanetom na aktivni ugalj (47,5 mas % Pt) i na nisko-indeksnim Pt monokristalnim elektrodama u sumpornoj kiselini. Prvi katalizator je okarakterisan korišćenjem tehnika transmisione elektronske mikroskopije niske (TEM) i visoke rezolucije (HRTEM), pri čemu je određena distribucija, veličina i oblik nanočestica Pt. Srednji prečnik nanočestica, izračunat iz elektro hemijskih merenja, saglasan je raspodeli veličina čestica dobijenoj HRTEM analizom. Na osnovu srednjeg prečnika nanočestica data je prosečna distribucija (111), (100) i (110) mesta na površini katalizatora na nosaču. Ovaj katalizator je aktivniji u oksidaciji mravlje kiseline od monokristalnih Pt elektroda orijentacije (100) i (110), ali je manje aktivan od Pt(111) elektrode u oblasti potencijala relevantnoj za primenu u gorivnom spregu.", publisher = "Serbian Chemical Society", journal = "Journal of the Serbian Chemical Society", title = "Comparisons of formic acid oxidation at supported Pt catalyst and at low-index Pt single crystal electrodes in sulfuric acid solution, Poređenje oksidacije mravlje kiseline na PT katalizatoru na nosaču i na niskoindeksnim PT monokristalima u sumpornoj kiselini", volume = "68", number = "11", pages = "849-857", doi = "10.2298/JSC0311849T" }
Tripković, A., Popović, K.,& Lović, J.. (2003). Comparisons of formic acid oxidation at supported Pt catalyst and at low-index Pt single crystal electrodes in sulfuric acid solution. in Journal of the Serbian Chemical Society Serbian Chemical Society., 68(11), 849-857. https://doi.org/10.2298/JSC0311849T
Tripković A, Popović K, Lović J. Comparisons of formic acid oxidation at supported Pt catalyst and at low-index Pt single crystal electrodes in sulfuric acid solution. in Journal of the Serbian Chemical Society. 2003;68(11):849-857. doi:10.2298/JSC0311849T .
Tripković, Amalija, Popović, Ksenija, Lović, Jelena, "Comparisons of formic acid oxidation at supported Pt catalyst and at low-index Pt single crystal electrodes in sulfuric acid solution" in Journal of the Serbian Chemical Society, 68, no. 11 (2003):849-857, https://doi.org/10.2298/JSC0311849T . .