Characterization of National Clays after Acid Treatment and Thermal-Reference-Cited by-同舟云学术

Characterization of National Clays after Acid Treatment and Thermal

Published:2014-09 Issue: Volume:805 Page:662-666
ISSN:1662-9752
Container-title:Materials Science Forum
language:
Short-container-title:MSF

Author:

Lima Wellington Siqueira¹,de Brito André Luiz Fiquene¹,Freire Rodrigues Meiry Glaúcia¹,Mota Mariaugusta Ferreira¹,Silva Marcílio Máximo¹

Affiliation:

1. Federal University of Campina Grande

Abstract

The clay types, kaolinite and smectite, are the most used industrially, mainly due to its sorption characteristics. There have been several attempts to improve the quality and characteristics of the clays, modifying them with different techniques. Two of the common techniques are thermal activation and acid activation. For acid activation, hydrochloric acid was used with a reaction time of 1 hour while the thermal activation the samples calcined at 300oC for 24 hours. This work aims to characterize the gray clay (supplied by Süd-Chemie LTDA) and Brasgel (provided by Bentonit), both in its natural form, as well as in the acid and thermal activation form (300°C). Natural and treated clays were characterized by X-ray Spectroscopy Energy Dispersive (EDX), X-ray diffraction (XRD) and nitrogen adsorption (BET). The results showed a reduction of impurities in the samples and did not comprise changes in the structure of the constituent minerals.

Publisher

Trans Tech Publications, Ltd.

Subject

Mechanical Engineering,Mechanics of Materials,Condensed Matter Physics,General Materials Science

Link

https://www.scientific.net/MSF.805.662.pdf

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