caa a22 4500 463190955 CHVBK 20180406164908.0 cr unu---uuuuu 170326e20070701xx s 000 0 eng 10.1007/s10973-006-7561-y doi (NATIONALLICENCE)springer-10.1007/s10973-006-7561-y Some thermal characteristics of a mineral mixture of palygorskite, metahalloysite, magnesite and dolomite [Elektronische Daten] [H. Bayram, M. Önal, G. Üstünışık, Y. Sarıkaya] An industrial raw material taken from Sivrihisar (Eskişehir, Turkey) region was heat-treated at different temperatures in the range of 100-1000°C for 2 h. The volumetric percentage of the particles having a diameter below 2 μm after staying in an aqueous suspension of the material was determined as 67% by the particle size distribution analysis. The mineralogical composition of the material was obtained as mass% of 32% palygorskite, 10% metahalloysite, 35% magnesite, 20% dolomite and 3% interparticle water by using the acid treatment, X-ray diffraction and thermal analysis (TG, DTA) data. The temperature ranges were determined for the endothermic dehydrations for the interparticle water as 25-140°C, for the zeolitic water as 140-320°C, and for the bound water as 320-480°C, in the palygorskite. The temperature range for the endothermic dehydroxylation and exothermic recrystalization of the palygorskite is 780-840°C. The temperature range for the endothermic dehydroxylation of the metahalloysite and calcinations of magnesite are coincided at 480-600°C. Dolomite calcined in the temperature range of 600-1000°C by two steps. The zig-zag changes in the specific surface area (S/m2 g−1) and specific micro and mesopore volume (V/cm3 g−1) as the temperature increases were discussed according to the dehydrations in the palygorkskite, dehydroxylation of palygorskite and metahalloysite, and calcinations in magnesite and dolomite. Springer Science+Business Media LLC, 2007 dehdyration nationallicence dehydroxylation nationallicence metahalloysite nationallicence palygorskite nationallicence thermal analysis nationallicence XRD nationallicence Bayram H. Atatürk Faculty on Education, Marmara University, Göztepe, İstanbul, Turkey aut Önal M. Faculty of Science, Department of Chemistry, Tando ğan, Ankara University, 06100, Ankara, Turkey aut Üstünışık G. Department of Geology, University of Cincinnati, Cincinnati, Ohio, USA aut Sarıkaya Y. Faculty of Science, Department of Chemistry, Tando ğan, Ankara University, 06100, Ankara, Turkey aut Journal of Thermal Analysis and Calorimetry Kluwer Academic Publishers-Plenum Publishers; http://www.springer-ny.com 89/1(2007-07-01), 169-174 1388-6150 89:1<169 2007 89 10973 https://doi.org/10.1007/s10973-006-7561-y text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10973-006-7561-y text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Bayram H. Atatürk Faculty on Education, Marmara University, Göztepe, İstanbul, Turkey aut NATIONALLICENCE 700 1- Önal M. Faculty of Science, Department of Chemistry, Tando ğan, Ankara University, 06100, Ankara, Turkey aut NATIONALLICENCE 700 1- Üstünışık G. Department of Geology, University of Cincinnati, Cincinnati, Ohio, USA aut NATIONALLICENCE 700 1- Sarıkaya Y. Faculty of Science, Department of Chemistry, Tando ğan, Ankara University, 06100, Ankara, Turkey aut NATIONALLICENCE 773 0- Journal of Thermal Analysis and Calorimetry Kluwer Academic Publishers-Plenum Publishers; http://www.springer-ny.com 89/1(2007-07-01), 169-174 1388-6150 89:1<169 2007 89 10973 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer