Chabazite is a microporous material widely studied due to its applications in heterogeneous catalysis. In this study, the authors synthesized a zeolite by the hydrothermal method at 125°C using tetrapropylammonium bromide as an organic template, which was removed by calcination at 800°C. The characterization of the synthesized product was carried out by X-ray diffraction, Fourier transform infrared spectroscopy, X-ray fluorescence, scanning electron microscopy coupled with energy-dispersive spectroscopy. X-ray diffraction showed the presence of a crystalline phase consisting of chabazite crystallizing in the rhombohedral lattice with lattice parameters a = 9.4250 Å and α = 94.060°. Fourier transform infrared spectroscopy revealed absorption bands located between 400 – 1000 cm -1 , characteristic of zeolites. X-ray fluorescence highlighted the aluminosilicate nature with a Si/Al ratio of 4.5 for the synthesized product. The SEM coupled with EDS revealed the uniformity of the product, a hexagonal morphology or the symmetrical facets characteristic of rhombohedral symmetry. The protonated form of the synthesized zeolite, obtained by ion exchange, was used as a catalyst for the synthesis of isoamyl acetate with a yield of the impure product of 79.03%; this yield being close to the same product obtained (84.76%) from the same reaction catalyzed by sulfuric acid. The UV-visible spectral data validated the synthesis products.
Ngoro-Elenga et al. (Sat,) studied this question.
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