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Showing 1 to 8 of 8 for “"Brønsted acidity"”.
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An Examination of γ-valerolactone Ring Opening and Decarboxylation in Multiphase System and Over Various Solid Acid Catalysts
… opening activity was more controlled by Lewis acidity instead of Brønsted acidity in this system. Deactivation was observed on these materials, and calcination can only partially regenerate the catalysts. Finally, different framework zeolites that had a high density of Brønsted acid sites were …
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An Examination Of Γ-valerolactone Ring Opening And Decarboxylation In Multiphase System And Over Various Solid Acid Catalysts
… opening activity was more controlled by Lewis acidity instead of Brønsted acidity in this system. Deactivation was observed on these materials, and calcination can only partially regenerate the catalysts. Finally, different framework zeolites that had a high density of Brønsted acid sites were …
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Friedel-crafts acylation reactions using heterogeneous catalysts stimulated by microwave radiation
… adsorption revealed the catalysts contained both Brønsted and Lewis acid sites. When the catalytic activities for the acylation of toluene and anisole were studied there was found to be a correlation between the Brønsted acidity and the catalytic activity. The reactivity of the catalysts is …
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Hydrocracking of n-C16 over MFI Zeolite Nano-sheets - Effect of the Si/Al Ratio
… activity increased with increasing number of Brønsted acid (H + ) sites (decreasing silicon-to-aluminium (Si/Al) ratio), while secondary cracking remained completely suppressed. Also, it was investigated whether more Al atoms could be incorporated into the framework of MFI nano-sheets by …
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Conversion of waste organic carbon and nutrient streams to renewable fuels through integrated biological funneling and catalytic hydrothermal upgrading
… of PHB) to produce propylene, with a focus on Brønsted-Lewis acidity of amorphous silica-alumina (ASAs) heterogeneous catalysts and longer-term time-on-stream experiments to explore catalyst deactivation mechanisms. The first research objective was addressed by developing predictive …
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INNOVATIVE SYSTEMS FOR THE MITIGATION OF RISKS: CATALYSTS AND SMART MATERIALS FOR DETECTION AND DECONTAMINATION OF HAZARDOUS CHEMICAL, BIOLOGICAL AND EXPLOSIVE SUBSTANCES
… to the synergistic effect between the strong Brønsted acidity of the resins and the oxidising capacity due to the presence of H2O2 and in-situ formed peroxosulfonic species. Decontamination and abatement of hazardous chemicals - The transition from stoichiometric to catalytic methods is …
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Desulfurization by reactive adsorption on oxide/metal composites
Nanostructured oxides – undoped, doped, composites and nano-heterostructures – having different morphologies and compositions were synthesized, characterized and tested under realistic operating conditions for their role as potential reactive adsorbents and catalysts in different environmental …