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Crystallization Study Of Silicoaluminophosphate Zeolites Templated Using Pyridinium Cations And Their Catalytic Behaviors In Esterification Reactions

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dc.contributor.authorMohammad, Al Issa Jehad Mohdfathi
dc.date.accessioned2026-03-05T01:10:47Z
dc.date.available2026-03-05T01:10:47Z
dc.date.issued2025-06
dc.description.abstractThis thesis presents three interconnected studies on the crystallization of SAPO zeolites. The first study investigates the crystallization of SAPO-11 under ionothermal conditions using 1-propylpyridinium bromide ([PPy]Br) as template. The effects of synthesis parameters are studied, and SAPO-11 with an acidic nature and high surface area is successfully synthesized after 133 h of heating at 150 °C. The second study explores the crystallization of SAPO-5 under hydrothermal conditions using 5-ethyl-2-methyl-1-propylpyridinium hydroxide ([empy]OH) new template, where H3PO4 and H4P2O7 are used as comparative P sources. Both crystallization processes are followed, and the effects of these P sources on the crystallization and structural properties of SAPO-5 are examined. The findings reveal that H3PO4 yields highly crystalline hierarchical SAPO-5 with high acidity, whereas H4P2O7 promotes nucleation, forming SAPO-5 nanoplates with textural mesoporosity. The third component focuses on the catalytic performance of synthesized SAPO zeolites.
dc.identifier.urihttps://erepo.usm.my/handle/123456789/23730
dc.language.isoen
dc.subjectCrystallization
dc.subjectEsterification
dc.titleCrystallization Study Of Silicoaluminophosphate Zeolites Templated Using Pyridinium Cations And Their Catalytic Behaviors In Esterification Reactions
dc.typeResource Types::text::thesis::doctoral thesis
dspace.entity.typePublication
oairecerif.author.affiliationUniversiti Sains Malaysia
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