Evaluation of the acidic properties of the B2O3–Al2O3 and Pt/B2O3–Al2O3 systems by spin probe EPR spectroscopy and their correlation with the occurrence of the joint hydroisomerization of heptane and benzene
| Autor: | E. D. Fedorova, Vyacheslav L. Yurpalov, V. A. Drozdov, A. V. Lavrenov |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Anthracene
Heptane 010405 organic chemistry Inorganic chemistry General Chemistry 010402 general chemistry 01 natural sciences Catalysis 0104 chemical sciences Computer Science Applications law.invention Spin probe chemistry.chemical_compound chemistry law Modeling and Simulation Benzene Brønsted–Lowry acid–base theory Electron paramagnetic resonance Methylcyclopentane |
| Zdroj: | Kinetics and Catalysis. 57:540-545 |
| ISSN: | 1608-3210 0023-1584 |
| DOI: | 10.1134/s0023158416040169 |
| Popis: | The acidity of a series of borate-containing aluminum oxide samples with the concentrations of B2O3 from 0.9 to 27.5 wt % and Pt-containing catalysts obtained on their basis was studied by spin probe EPR spectroscopy. With the use of anthracene and the TEMPO nitroxide radical as probe molecules, it was established that an increase in the B2O3 content of the B2O3–Al2O3 and Pt/B2O3–Al2O3 systems leads to a symbatic increase in the number of medium-strength Bronsted acid sites (BASs). In this case, the yields of target hydroisomerization products (isoheptanes and methylcyclopentane) correlate with the number of BASs. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|