| Autor: |
Niina Koivikko, Satu Ojala, Tiina Laitinen, Felipe Lopes da Silva, Lauri Hautala, Zouhair El Assal, Mari Honkanen, Minnamari Vippola, Mika Huuhtanen, Marko Huttula, Teuvo Maunula, Riitta L. Keiski |
| Přispěvatelé: |
Tampere University, Materials Science and Environmental Engineering |
| Jazyk: |
angličtina |
| Rok vydání: |
2022 |
| Předmět: |
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| Popis: |
Silica-titania (70/30) supported vanadium catalysts were prepared, characterized, and studied in oxidative dehydrogenation of sulfur-contaminated methanol. The quality of vanadia species is dependent on temperature and gas conditions during preparation, support type, support specific surface area and VOx surface density. For example, upon heating the amount of V2O5 decrease along with formation of polymeric species. Such changes may occur also during the catalytic reaction. The reaction experiments and characterization results showed that the stability of polymeric vanadia species and total acidity has a connection with better formaldehyde production performance. The best performance was observed for N2-calcined silica-titania catalyst. Easy reducibility of the catalyst, as in the case of reference catalysts, leads to further oxidation of formaldehyde. publishedVersion |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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