Synthesis and characterization of hierarchical nanoporous HY zeolites from acid‐activated kaolin

Alaba, Peter Adeniyi and Sani, Yahaya Muhammad and Daud, Wan Mohd Wan (2015) Synthesis and characterization of hierarchical nanoporous HY zeolites from acid‐activated kaolin. Chinese Journal of Catalysis, 36. pp. 1846-1851.

PDF Download (709Kb)

Abstract

Hierarchical nanoporous HY zeolites were synthesized from acid‐activated kaolin. The hierarchical factor (HF) was maximized by varying the aging and crystallization time. This was achieved by maximizing the external surface area without greatly reducing the micropore volume. The resulting products were characterized using X‐ray diffraction (XRD), X‐ray fluorescence, N2 adsorption, and NH3 temperature‐programmed desorption. The nanoporous HY zeolite with the highest HF was obtained by aging for 48 h and a crystallization time of 24 h. The acidity and crystallinity varied depending on the operating parameters. Incorporation of an appropriate amount of NaCl was also vital in maximizing the HF, crystallinity, and acidity. The sample crystallinities were determined by comparing their XRD peak intensities with those of a conventional Y zeolite. The results show that optimizing this process could lead to a widely acceptable commercial route for HY zeolite production

Item Type:	Article
Uncontrolled Keywords:	HY zeolite Kaolin Hierarchical mesopore Hierarchical factor Relative crystallinity
Subjects:	T Technology > TP Chemical technology
Divisions:	Faculty of Engineering, Science and Mathematics > School of Engineering Sciences
Depositing User:	Mrs Patricia Nwokealisi
Date Deposited:	21 Aug 2018 13:16
Last Modified:	21 Aug 2018 13:16
URI:	http://eprints.covenantuniversity.edu.ng/id/eprint/11413

Actions (login required)

View Item