STUDY OF THERMAL AND ACID STABILITY OF BENTONITE CLAY | Zendy

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STUDY OF THERMAL AND ACID STABILITY OF BENTONITE CLAY

Author(s) -

Karna Wijaya,

Ani Setyo Pratiwi,

Sri Sudiono,

Emi Nurahmi

Publication year - 2010

Publication title -

indonesian journal of chemistry

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.273

H-Index - 14

eISSN - 2460-1578

pISSN - 1411-9420

DOI - 10.22146/ijc.21929

Subject(s) - bentonite , chemistry , thermal stability , nuclear chemistry , chemical engineering , organic chemistry , engineering

The thermal and acid stability of the bentonite clays (Na- and Ca-bentonite) have been tested. The thermal stability testing has been carried out by heating 5 gram of the clays for five hours at 200, 300 and 500 °C respectively, meanwhile acid stability testing was performed by immersing 5 gram clays into 100 mL sulphuric acid 1M, 2M and 3M for 24 hours. The tested clays, then were characterized by means of X-Ray difractometry and IR-spectroscopy methods. The characterization results showed that upon heating, both Ca- and Na-bentonites indicated same thermal stability. However, upon acid treatment, Na-bentonite was found relatively stabiler and more resistance then Ca-bentonite. Keywords: bentonite, clay, thermal stability, acid stability.

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