Thermal analysis applied for the removal of surfactant from mesoporous molecular sieves MCM-41 synthesized from gold mine tailings slurry


Yilmaz M. , Degitz I. A. , Piskin S.

JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY, vol.130, no.2, pp.727-734, 2017 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 130 Issue: 2
  • Publication Date: 2017
  • Doi Number: 10.1007/s10973-017-6490-2
  • Title of Journal : JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
  • Page Numbers: pp.727-734
  • Keywords: Thermogravimetric analysis, MCM-41, Tailings slurry, Surfactant removal, Decomposition kinetics, TEMPLATE REMOVAL, HYDROTHERMAL STABILITY, DRUG-DELIVERY, SILICA, KINETICS, BEHAVIOR, DEGRADATION, TEMPERATURE, SYSTEM, ASH

Abstract

The aim of the current study is to obtain the thermal behavior and kinetic analyses of the removal of surfactant from MCM-41 synthesized from tailings slurry at different heating rates. X-ray diffraction and thermogravimetric analyses were carried out to determine the characterization of the synthesized samples. Kissinger-Akahira-Sunose and Friedman isoconversional kinetic methods were applied for the purpose of determining the kinetic analysis parameters of the decomposition of surfactant from the mesoporous molecular sieves MCM-41 under non-isothermal conditions. For the comparison of these results, MCM-41 was synthesized from a pure silica source. The thermal behaviors of MCM-41 synthesized from tailings slurry do not differ from samples synthesized from pure silica during the decomposition reactions. The kinetic analysis' results indicate that the decomposition reactions of the synthesized MCM-41 samples had complex reaction mechanisms.