Ismail Alhassan Auwal

Sule Lamido University, Kafin Hausa, Nigeria.

Title: Effects of Synthesis Parameters on the Crystallization Profile and Morphological Properties of SAPO-5 Templated by 1-Benzyl-2,3-Dimethylimidazolium

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Biography

Ismail Alhassan Auwal studied for B.Sc. Chemistry at Kano University of Science and Technology in 2012. In 2014, he secured a full-time faculty position at Sule Lamido University Jigawa Nigeria. He was then awarded a Prestigious Scholarship for master degree where he studied MSc Chemistry at Fatih University (now Istanbul University) 2014-2016. In 2018 was awarded a TETFund fellowship where he studied PhD Chemistry in the field of Surface Chemistry and Catalysis at Universiti Sains Malaysia in 2021. In September 2021 he was promoted to Lecturer I at Sule Lamido University Kafin Hausa Nigeria.

Ismail is currently teaching Physical chemistry courses and serves as a Level Coordinator of third year students. His research group focus on synthesis and studies of zeolite and zeolite-like porous materials as well as magnetic nanoparticles.

Abstract

The formation of SAPO-5 molecular sieves is studied under hydrothermal conditions in the presence of a new templating agent, 1-benzyl-2,3-dimethylimidazolium hydroxide ([bzmIm]OH). The syntheses were carried out by varying the synthesis parameters, viz. crystallization temperature, heating time and reactants molar composition (SiO2, Al2O3, P2O5, [bzmIm]+, H2O) in order to investigate the role of each synthesis parameter on the formation of SAPO-5. The results showed that these synthesis parameters had significant influences on the entire crystallization process (induction, nucleation, crystal growth, and Ostwald ripening) and physicochemical properties of SAPO-5 (morphology and crystal size). Moreover, this study also demonstrated a fast hydrothermal synthesis approach where a SAPO-5 molecular sieve with hexagonal prism morphology could be crystallized within 10 h instead of days using a novel [bzmIm]OH heterocyclic template, thus offering an alternative route for synthesizing zeolite-like materials for advanced applications. 

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Keywords

“SAPO-5”, “microporous material”, “hydrothermal synthesis”, “imidazolium template”, “crystallization process”