An efficient Ti0.95Cu0.05O1.95 catalyst for ipso – hydroxylation of arylboronic acid and reduction of 4-nitrophenol
| العنوان: | An efficient Ti0.95Cu0.05O1.95 catalyst for ipso – hydroxylation of arylboronic acid and reduction of 4-nitrophenol |
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| المؤلفون: | Shrikanth K. Bhat, M. S. Hegde, Prasanna, Jagadeesh Prasad Dasappa |
| المصدر: | Journal of Chemical Sciences. 133 |
| بيانات النشر: | Springer Science and Business Media LLC, 2021. |
| سنة النشر: | 2021 |
| مصطلحات موضوعية: | geography, Anatase, geography.geographical_feature_category, Materials science, Inorganic chemistry, Cordierite, General Chemistry, engineering.material, Redox, Catalysis, Nucleophile, Vacancy defect, Electrophile, engineering, Monolith |
| الوصف: | A stable, active and selective Ti0.95Cu0.05O1.95 catalyst, crystallized in anatase TiO2 structure with 5% Cu2+ ions substituted for Ti4+ ions with 5% oxide ion vacancy has been synthesized by solution combustion method. The catalyst was coated over a cordierite monolith (Mg2Al4Si5O18) by solution combustion method. By the first principle density functional theory (DFT) calculations, 48 atoms bulk structure has been optimized and density of states (DOS) has been calculated. Ti – O bond distribution in Ti0.95Cu0.05O1.95 has been compared with pure TiO2. Bond distribution analysis has shown longer Cu – O and Ti – O bonds compared to those in CuO and TiO2 creating Cu2+ and oxide ion vacancy as electrophilic and nucleophilic active sites, respectively. This catalyst was found to be very active for ipso – hydroxylation of arylboronic acid and 4-nitrophenol reduction reactions at room temperature. Catalyst coated cordierite monolith was used in the recycling process of the reaction for 20 cycles and cumulative turnover frequency was found to be 184,840 h−1. Ti0.95Cu0.05O1.95 catalyst coated on cordierite monolith enhanced the rate of the reaction compared to powder catalyst and made the handling and recycling of the catalyst very easy. |
| تدمد: | 0973-7103 0974-3626 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_________::419717e644930874dee3fb099d7170e8 https://doi.org/10.1007/s12039-021-01933-2 |
| حقوق: | CLOSED |
| رقم الأكسشن: | edsair.doi...........419717e644930874dee3fb099d7170e8 |
| قاعدة البيانات: | OpenAIRE |
Find this article in full text from Springer Verlag. | تدمد: | 09737103 09743626 |
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