Synthesis and Characterization of NaA Zeolite Using Natural Kaolinite Clays from Nigeria by Low Temperature Hydrothermal Method

Authors

  • Ifedayo Joshua Akinruli Department of Glass and Ceramics, Federal Polytechnic, Ado-Ekiti, Nigeria
  • Seun Samuel Owoeye Department of Glass and Ceramics, Federal Polytechnic, Ado-Ekiti, Nigeria
  • Segun Michael Abegunde Department of Science Technology, Federal Polytechnic, Ado-Ekiti, Nigeria
  • Ayodeji E. Onipede Department of Science Technology, Federal Polytechnic, Ado-Ekiti, Nigeria
  • Ukoba Kingsley University of Kwazulu Natal, Durban, South Africa

DOI:

https://doi.org/10.47607/ijresm.2021.498

Keywords:

Na-A zeolites, kaolinite clays, hydroxysodalite, hydrothermal transformation

Abstract

Zeolites NaA is one of the most valuable synthetic zeolites widely used as ion-exchange material, catalysts, and adsorbents in industry. There is therefore need to adopt a more energy-efficient route for its synthesis from low-cost and sustainable raw materials. In this present work, zeolites Na-A was synthesized from natural kaolinite clays obtained from three selected regions (Ikere, Okpella and Kankara) in Nigeria. The as-received kaolinite clays (IKclay, OKclay and KAclay) were initially beneficiated thoroughly to obtain pure powders (˂75 μm). The processed kaolinite clay powders were then subjected to heating in a muffle furnace at 850oC for 3 h at a heating rate of 10oC/min to convert the kaolinite clays to their respective metakaolins. The obtained metakaolins were then reacted with NaOH solutions at varying concentrations of 3.0 and 4.0M respectively using a low temperature hydrothermal transformation to obtained Zeolites Na-A powders. The obtained zeolites were then analyzed by scanning electron microscopy (FESEM), energy dispersive spectroscopy (EDS) and Fourier-transform infrared spectroscopy (FT-IR). The results showed that zeolite NaA is produced with mixture of hydroxysodalite (HS) while the EDS revealed the presence of Si, Al, O and Na indicating chemical constituents of typical zeolite NaA. All the tested kaolinite clays are therefore suitable for preparation of zeolite NaA as cheaper source of silica and aluminum.

Downloads

Download data is not yet available.

Downloads

Published

2021-02-13

How to Cite

[1]
I. J. Akinruli, S. S. Owoeye, S. M. Abegunde, A. E. Onipede, and U. Kingsley, “Synthesis and Characterization of NaA Zeolite Using Natural Kaolinite Clays from Nigeria by Low Temperature Hydrothermal Method”, International Journal of Research in Engineering, Science and Management, vol. 4, no. 2, pp. 40–47, Feb. 2021, doi: 10.47607/ijresm.2021.498.

Issue

Section

Articles