Direct synthesis of hydrogen peroxide using Au–Pd-exchanged and supported heteropolyacid catalysts at ambient temperature using water as solvent
| العنوان: | Direct synthesis of hydrogen peroxide using Au–Pd-exchanged and supported heteropolyacid catalysts at ambient temperature using water as solvent |
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| المؤلفون: | Jennifer K. Edwards, Simon J. Freakley, Graham J. Hutchings, Edwin N. Ntainjua, Marco Piccinini, James Charles Pritchard, Albert Frederick Carley |
| المصدر: | Green Chem.. 14:170-181 |
| بيانات النشر: | Royal Society of Chemistry (RSC), 2012. |
| سنة النشر: | 2012 |
| مصطلحات موضوعية: | Solvent, Keggin structure, chemistry.chemical_compound, Chemistry, Anthraquinone process, Inorganic chemistry, Environmental Chemistry, Halide, Selectivity, Hydrogen peroxide, Pollution, Catalysis, Direct process |
| الوصف: | The direct synthesis of hydrogen peroxide from molecular H2 and O2 represents a green and economic alternative to the current anthraquinone process used for the industrial production of H2O2. In order for the direct process to compete with the anthraquinone process, there is a need for enhanced H2O2 yields and H2 selectivity in the process. We show that Au–Pd-exchanged and supported Cs-containing heteropolyacid catalysts with the Keggin structure are considerably more effective in achieving high H2O2 yields in the absence of acid or halide additives than previously reported catalysts. The Au–Pd-exchanged Cs-heteropolyacid catalysts also show superior H2O2 synthesis activity under challenging conditions (ambient temperature, water-only solvent and CO2-free reaction gas). Au plays a crucial role in achieving the improved performance of these heteropolyacid-based catalysts. The heteropolyacid limits the subsequential hydrogenation/decomposition of H2O2. |
| تدمد: | 1463-9270 1463-9262 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_________::05cf2198181c3ad88060e2e9ef17cbe7 https://doi.org/10.1039/c1gc15863e |
| رقم الأكسشن: | edsair.doi...........05cf2198181c3ad88060e2e9ef17cbe7 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 14639270 14639262 |
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