scholarly journals Dynamic and controlled rate thermal analysis of hydrozincite and smithsonite

2008 ◽  
Vol 92 (3) ◽  
pp. 911-916 ◽  
Author(s):  
Veronika Vágvölgyi ◽  
M. Hales ◽  
W. Martens ◽  
J. Kristóf ◽  
Erzsébet Horváth ◽  
...  
Keyword(s):  
Thermal Analysis ◽  
Controlled Rate Thermal Analysis

scholarly journals Controlled rate thermal analysis of hydromagnesite

2008 ◽  
Vol 92 (3) ◽  
pp. 893-897 ◽  
Author(s):  
Veronika Vágvölgyi ◽  
R. L. Frost ◽  
M. Hales ◽  
A. Locke ◽  
J. Kristóf ◽  
...  
Keyword(s):  
Thermal Analysis ◽  
Controlled Rate Thermal Analysis

TEM study of kaolinite thermal decomposition by controlled-rate thermal analysis

1996 ◽  
Vol 31 (19) ◽  
pp. 5069-5075 ◽  
Author(s):  
F. Bergaya ◽  
P. Dion ◽  
J. -F. Alcover ◽  
C. Clinard ◽  
D. Tchoubar
Keyword(s):  
Thermal Analysis ◽  
Thermal Decomposition ◽  
Controlled Rate Thermal Analysis

Raman microscopy of formamide-intercalated kaolinites treated by controlled-rate thermal analysis technology

2001 ◽  
Vol 32 (10) ◽  
pp. 873-880 ◽  
Author(s):  
Ray L. Frost ◽  
János Kristóf ◽  
Erzsébet Horváth ◽  
J. Theo Kloprogge
Keyword(s):  
Thermal Analysis ◽  
Raman Microscopy ◽  
Controlled Rate Thermal Analysis

scholarly journals The thermal dehydroxylation of kaolinite using thermogravimetric analysis and Controlled rate thermal analysis

2021 ◽  
Vol 16 (3) ◽  
pp. 235-245
Author(s):  
Jean Aimé Mbey ◽  
Cyrill Joël Ngally Sabouang ◽  
Thomas Beauregard Makon ◽  
Sandotin Lassina Coulibaly ◽  
Sakéo Kong
Keyword(s):  
Thermal Analysis ◽  
Particle Size ◽  
Thermogravimetric Analysis ◽  
Thermal Analyses ◽  
Adsorbed Water ◽  
Morphological Observation ◽  
Controlled Rate Thermal Analysis ◽  
Transmission Electron ◽  
Clay Platelets ◽  
Xrd Patterns

The aim of this work was to identify parameters that could influence the conversion of kaolinite into metakaolinite. To this end, the dehydroxylation of four kaolinites, using controlled rate thermal analysis (CRTA) and thermogravimetric analysis (TGA), was  investigated. X-ray diffraction (XRD) and Fourier transform infra-red (FTIR) were used to confirm the kaolinitic nature of the samples.  Their crystallinity was evaluated using the Hinckley index from the XRD patterns and transmission electron microscopy (TEM) was used for morphological observation of the clay platelets. The thermal analyses of the samples indicate, for all samples, low defects as revealed by the low amount of adsorbed water on the clay surface. The dehydroxylation temperature from both techniques was influenced by the sample crystallinity and particle size. It was observed from both techniques that increase crystallinity resulted in highdehydroxylation temperature. Also, the influence of the clay platelets size on the dehydroxylation temperature, is proposed. All the results indicate that crystallinity and particle size are parameters that could be used to control the temperature for the conversion of kaolinite to metakaolinite. Keywords: Kaolinite; Crystallinity, Dehydroxylation; Thermal analysis

Controlled rate thermal analysis of formamide intercalated kaolinites

2003 ◽  
pp. 523-530 ◽  
Author(s):  
R.L. Frost ◽  
J. Kristof ◽  
Z. Ding ◽  
Erzsébet Horvath
Keyword(s):  
Thermal Analysis ◽  
Controlled Rate Thermal Analysis

Controlled Rate Thermal Analysis of kaolinite dehydroxylation: effect of water vapour pressure on the mechanism

2002 ◽  
Vol 390 (1-2) ◽  
pp. 123-132 ◽  
Author(s):  
K Nahdi ◽  
P Llewellyn ◽  
F Rouquérol ◽  
J Rouquérol ◽  
N.K Ariguib ◽  
...  
Keyword(s):  
Thermal Analysis ◽  
Water Vapour ◽  
Vapour Pressure ◽  
Water Vapour Pressure ◽  
Controlled Rate Thermal Analysis ◽  
Effect Of Water
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