Combined TPD and FTIR studies of Co/ZrO2 catalysts: determination of the cobalt dispersion
| العنوان: | Combined TPD and FTIR studies of Co/ZrO2 catalysts: determination of the cobalt dispersion |
|---|---|
| المؤلفون: | B. Tsyntsarski, Konstantin Hadjiivanov, Ts. Marinova, Dimitar Klissurski, V. Avreyska, D. Panayotov |
| المصدر: | Surface and Interface Analysis. 34:88-91 |
| بيانات النشر: | Wiley, 2002. |
| سنة النشر: | 2002 |
| مصطلحات موضوعية: | Thermal desorption spectroscopy, Chemistry, Analytical chemistry, Infrared spectroscopy, chemistry.chemical_element, Surfaces and Interfaces, General Chemistry, Condensed Matter Physics, Surfaces, Coatings and Films, Catalysis, Adsorption, Desorption, Materials Chemistry, Fourier transform infrared spectroscopy, Dispersion (chemistry), Cobalt |
| الوصف: | Adsorption of NO on cobalt catalysts supported on zirconia and sulphated zirconia results in the formation of three main types of species: Zr 4+ (SO 4 2-)-NO and Zr 4+ (NO 3 -)-NO nitrosyls (infrared band at 1940-1906 cm -1 ), which are of low stability (temperature-programmed desorption maximum at 55-80°C); Co 2+ (NO) 2 geminal nitrosyls (set of bands at 1903-1868 and 1814-1777 cm -1 ) characterized by temperature-programmed desorption maxima at 90-100 °C; and linear Co n+ -NO species (1942-1858 cm -1 ) desorbing at 120-140 °C. On the basis of the results obtained, a simple temperature-programmed desorption technique for determination of the cobalt dispersion is developed. |
| تدمد: | 1096-9918 0142-2421 1940-1906 |
| DOI: | 10.1002/sia.1259 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_________::c9c8952cc34c6b362789ffc63391785e https://doi.org/10.1002/sia.1259 |
| Rights: | CLOSED |
| رقم الانضمام: | edsair.doi...........c9c8952cc34c6b362789ffc63391785e |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 10969918 01422421 19401906 |
|---|---|
| DOI: | 10.1002/sia.1259 |