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KARBONATLI MANGAN CEVHERİNİN İZOTERMAL OLMAYAN DEKOMPOZİSYON KİNETİĞİ

THE NON-ISOTHERMAL KINETICS OF DECOMPOSITION OF MANGANESE CARBONATE ORE

Journal Name:

  • Sakarya Üniversitesi Fen Bilimleri Enstitüsü Dergisi

Publication Year:

  • 2012

Key Words:

Keywords (Original Language):

Author NameUniversity of AuthorFaculty of Author
Abstract (2. Language): 
The non-isothermal kinetics of decomposition of manganese carbonate ore from Denizli – Tavas region was studied. The ore decomposed according to a serie of reaction, → → . By using of Kissenger equation, the activation energies for the decomposition of MnCO3 to MnO2 and the transformation of MnO2 to Mn2O3 were calculated as 185,7 kJ/mol and 217,3 kJ/mol, respectively.
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Abstract (Original Language): 
Denizli – Tavas bölgesi karbonatlı mangan cevherinin izotermal olmayan dekompozisyon kinetiği incelenmiştir. Cevher → → şeklinde dekompozisyona uğramaktadır. Kissenger denklemiyle yapılan izotermal olmayan kinetik incelemede mangan karbonattan (MnCO3) mangan diokside (MnO2) ve mangan dioksitten (MnO2) mangan triokside (Mn2O3) dönüşümün aktivasyon enerjileri sırasıyla 185,7 kJ/mol ve 217,3 kJ/mol olarak tespit edilmiştir.
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REFERENCES

References: 

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[7] SHAHEEN, W.M., SELİM, M.M., Effect of thermal treatment on physicochemical properties of pure and mixed manganese carbonate and basic copper carbonate, Thermochimica Acta, 332, 117-128, 1998.
[8] LEI, S., TANG, K., FANG, Z., LIU, Q., ZHENG, H., Preparation of α-Mn2O3 and MnO from thermal decomposition of MnCO3 and control of morphology, Materials Letters, 60, 53-56, 2006.
[9] GALWEY, A.K., Is the science of thermal analysis kinetics based on solid foundations ? A literature appraisal, Thermochimica Acta, 413, 139-183, 2004.
[10] CABALLERO, J.A., CONESA, J.A., Mathematical considerations for nonisothermal kinetics in thermal decomposition, J.Anal.Appl.Pyrolysis, 73, 85-100, 2005.
[11] BROWN, M.E., Introduction to Thermal Analysis-Techniques and Applications, 2nd Ed., Kluwer Academic Pub., NJ,USA, 2001.

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