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dc.contributor.authorAmeh, Alechine E.en_US
dc.contributor.authorMusyoka, Nicholas M.en_US
dc.contributor.authorOyekola, Oluwaseunen_US
dc.contributor.authorLouis, Benoiten_US
dc.contributor.authorPetrik, Leslie Feliciaen_US
dc.identifier.citationAmeh, A.E., Musyoka, N.M., Oyekola, O. et al. 2021. Acylation of Anisole with Benzoyl Chloride over rapidly synthesized fly ash–based HBEA zeolite. Frontiers in Chemistry, 9: 683125. []en_US
dc.description.abstractStable HBEA zeolite with high surface area and strong acid sites was synthesized from coal fly ash–based silica extract via indirect hydrothermal synthesis. The rapid HBEA hydrothermal crystallization times of 8, 10, and 12 h were achieved through a reduced molar water fraction in the synthesis composition. The HBEA zeolites prepared from fly ash silica extract exhibited well-defined spheroidal-shaped crystal morphology with uniform particle sizes of 192, 190, or 239 nm obtained after 8, 10, or 12 h of synthesis time, respectively. The high surface area and the microporous area of 702 and 722 m2 /g were achieved as a function of shorter hydrothermal synthesis durations (10 and 24 h, respectively) compared to 48 or 72 h, which resulted in HBEA zeolites with lower surface areas of 538 and 670 m2 /g. Likewise, temperature-programmed desorption measurements of fly ash–based HBEA zeolites revealed the presence of weak and strong acid sites in the zeolite. The submicron crystal sizes with a well-defined porosity of HBEA zeolites enhanced the diffusion of anisole and benzoyl chloride molecules toward the active acid sites and hence showed better conversion and selectivity in acylation products. High conversion of benzoyl chloride with anisole was achieved, reaching up to 83% with a 93–96% selectivity toward 4-methoxyacetophenone.en_US
dc.publisherFrontiers Media S.A.en_US
dc.relation.ispartofFrontiers in Chemistryen_US
dc.subjectCoal fly ashen_US
dc.subjectHBEA zeoliteen_US
dc.subjectmolar compositionen_US
dc.subjectacylation reactionen_US
dc.titleAcylation of Anisole with Benzoyl Chloride over rapidly synthesized fly ash–based HBEA zeoliteen_US
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