Tuning the morphology of heterogeneous catalysts is of paramount importance for the design of efficient processes and requires detailed information on the physicochemical characteristics of the materials. Four micro-/mesoporous composites with different morphologies were synthesized by a dual-templating method using two-step crystallization with different zeolite seed concentrations. This work demonstrates the dependence of selectivity on the catalyst nature in solid-acid alkylation. It was demonstrated that a high concentration of weak acid sites leads to dialkyltoluene products, whereas a high concentration of strong acid sites is beneficial for other side reactions. It was shown that the morphology of catalysts played a crucial role in solid-acid alkylation. The alkylation mechanism defined in this study with different contributions of weak and strong acid sites could provide a route to the development of effective solid-acid catalysts.
Synergy of Acidity and Morphology of Micro-/Mesoporous Materials in the Solid-Acid Alkylation of Toluene with 1-Decene / Sadovnikov, A. A.; Arapova, O. V.; Russo, V.; Maximov, A. L.; Murzin, D. Y.. - In: INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH. - ISSN 0888-5885. - 61:5(2022), pp. 1994-2009. [10.1021/acs.iecr.1c04169]
Synergy of Acidity and Morphology of Micro-/Mesoporous Materials in the Solid-Acid Alkylation of Toluene with 1-Decene
Russo V.;
2022
Abstract
Tuning the morphology of heterogeneous catalysts is of paramount importance for the design of efficient processes and requires detailed information on the physicochemical characteristics of the materials. Four micro-/mesoporous composites with different morphologies were synthesized by a dual-templating method using two-step crystallization with different zeolite seed concentrations. This work demonstrates the dependence of selectivity on the catalyst nature in solid-acid alkylation. It was demonstrated that a high concentration of weak acid sites leads to dialkyltoluene products, whereas a high concentration of strong acid sites is beneficial for other side reactions. It was shown that the morphology of catalysts played a crucial role in solid-acid alkylation. The alkylation mechanism defined in this study with different contributions of weak and strong acid sites could provide a route to the development of effective solid-acid catalysts.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.