Journal
APPLIED CLAY SCIENCE
Volume 51, Issue 1-2, Pages 187-191Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.clay.2010.10.033
Keywords
Thermal analysis; Co bentonite; Cobalt hydroxyl gels
Funding
- CAPES [082/2007]
- CNPq [307102/2007-2, 302748/2008-3]
- Fundacao Araucaria de Apoio ao Desenvolvimento Cientifico e Tecnologico do Parana [10779]
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The thermal effect on the phase evolution and crystallinity of raw and cobalt-modified Brazilian bentonites was investigated. The modified bentonites were prepared dispersing the bentonite particles in Co2+ hydroxide gels. The samples were characterized by X-ray diffraction, Fourier transform infrared spectroscopy, thermal analyses and energy dispersive X-ray spectroscopy. An endothermic peak around 900 degrees C indicated the formation of olivine. A test with benzyl alcohol confirmed the catalytic activity as acidic catalyst for alcohol oxidation. (C) 2010 Elsevier B.V. All rights reserved.
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