@misc{mgbemere_synthesis_of_2018, author={Mgbemere, H.E., Lawal, G.I., Ekpe, I.C., Chaudhary, A.-L.}, title={Synthesis of zeolite-A using kaolin samples from Darazo, Bauchi state and Ajebo, Ogun state in Nigeria}, year={2018}, howpublished = {journal article}, doi = {https://doi.org/10.4314/njt.v37i1.12}, abstract = {Kaolin samples from Ajebo and Darazo in Nigeria were characterized and used to produce zeolite - A crystals. The thermal analysis indicates that both samples under gode-hydroxylation from 450oC to about 700oC and are converted to metakaolin with a weight lo ss of about 11.39 and 10.43% for the Ajebo and Darazo samples respectively. Characteristic OH, Al-OH, Si-OH and Si-O-Albands were confirmed in both samples with Infra-red spectroscopy studies. The X - ray diffraction patterns clearly show the presence of the characteristic peaks (12.35 and 24.88o ) of kaolinite with little quartz impurities. X - ray diffraction measurements (2Ɵ peaks at 7 – 18o and 21 – 35o ) and scanning electron micro graphs clearly show that zeolite - A crystals are produced. The microstructures of kaolin, metakaolin and zeolite - A crystals reveal the presence of platy crystals, amorphous spherical aggregates and cubic - shaped crystals with some amorphous gel respectively . The results show that both Ajebo and Darazo kaolin are suitable for zeolite - A synthesis.}, note = {Online available at: \url{https://doi.org/10.4314/njt.v37i1.12} (DOI). Mgbemere, H.; Lawal, G.; Ekpe, I.; Chaudhary, A.: Synthesis of zeolite-A using kaolin samples from Darazo, Bauchi state and Ajebo, Ogun state in Nigeria. Nigerian Journal of Technology. 2018. vol. 37, no. 1, 87-95. DOI: 10.4314/njt.v37i1.12}}