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有机蒙脱土热分解动力学研究(PDF)

《南京林业大学学报(自然科学版)》[ISSN:1000-2006/CN:32-1161/S]

Issue:
2009年04期
Page:
101-104
Column:
研究论文
publishdate:
2009-07-30

Article Info:/Info

Title:
Study on pyrolysis kinetics of organic montmorillonite
Author(s):
CUI Huiwang1 DU Guanben2*
1.College of Wood Science and Technology, Nanjing Forestry University, Nanjing 210037,China; 2.Department of Wood Science and Technology, Southwest Forestry College, Kunming 650224, China
Keywords:
OMMT pyrolysis kinetics kinetic compensation effect form factor of DTA curve
Classification number :
TQ325
DOI:
10.3969/j.jssn.1000-2006.2009.04.021
Document Code:
A
Abstract:
Organic montmorillonite (OMMT) was prepared from trioctadecyl methyl ammonium bromide (TOAB) and montmorillonite (MMT), and then studied by thermogravimetric and differential thermal analysis (TGDTA). Results showed that the pyrolysis of OMMT was carried out at 170—530℃, and the data were analyzed by Agrawal integral equation. Combined with the linear correlation coefficient, the integral kinetic equation of G(a)=a-(1-a)ln(1-a) of the pyrolysis of OMMT, active energy (E) of 13.62 kJ/mol, frequency factor (A) of 1.92 min-1, and the kinetic compensation effect equation of ln A=0.410 3E-4.442 8 were obtained. Form factor of DTA curve calculated from pyrolysis kinetics showed that the symmetry of DTA curve of OMMT was bad, and was identical with the DTA curve in TGDTGDTA.

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Last Update: 2009-07-30