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Physico-chemical Characterization of Hydrochloric Acid-treated Kaolin clay: An Industry Approach as a Potential Catalyst

Author(s):

Awinash Kumar* and Pradip Lingfa   Pages 1 - 9 ( 9 )

Abstract:


This study explains the FT-IR, XRD, XRF, SEM/EDX, TGA, and DSC/DTA characterization of commercially available kaolin clay. The kaolin clay was treated with 4M hydrochloric acid. The objective of this paper is to explore the prominent utilization of kandites clay and useful chemical aspects for modification of kaolin clay minerals. The mineral phase in the presence of chlorite, cristobalite, halloysite, and quartz of kaolin clay was identified by XRD. The FT-IR revealed the functional group of Al-O, A1-OH, and Si-O. Elemental analysis was done by the XRF. The main elements of kaolin clay, SiO2, Al2O3, K2O, Fe2O3, and TiO2 were 45.22%, 38.43%, 0.84%, 0.52%, and 0.269% respectively with rest of impurities. Loss on ignition was found 10.89%. The morphology indicates that the presences of large particles are in the form of agglomerates. Fingerprint region of the acid-treated sample has broad and more bending vibrations than untreated samples. The high weight percentage of Ti and CaCO3 were spotted in the scanning electron micrograph by both atomic % and weight %. It was found that impurity like scandium vanished and manganese traced by the same atomic % 0.01 of zinc which had no presence after acid treatment. Thermogravimetric analysis indicates the sharp increments in heat flow in-between temperatures 0°C to 200°C and consequently increments in between 500°C to 550°C, a suitable range for the pyrolysis process. TGA and DTA analysis satisfy the waste plastic valorization temperature ranges.

Keywords:

Kaolin clay, Acid-activation, Catalyst, Physico-chemical characteristics, Morphology, Spectroscopy

Affiliation:

Department of Mechanical Engineering, North Eastern Regional Institute of Science and Technology (Deemed to be University, Govt. of India), Nirjuli, Itanagar, Arunachal Pradesh, Department of Mechanical Engineering, North Eastern Regional Institute of Science and Technology (Deemed to be University, Govt. of India), Nirjuli, Itanagar, Arunachal Pradesh



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