Thermal properties of NO^sub 2^–graphite intercalation compound prepared by gas-phase processing

Natural flake graphite and nitrogen dioxide (NO2) gas were used as host material and intercalating agent respectively, to prepare NO2-graphite intercalation compound (NO2-GIC) by direct gas-phase processing. Thermal properties of NO2-GIC were investigated by storage experimental and thermal gravity...

Full description

Saved in:
Bibliographic Details
Published in:Materials letters 2017-02, Vol.189, p.279
Main Authors: Xiaomeng, Lv, Xuanjun, Wang, Xia, Li
Format: Article
Language:English
Subjects:
Decomposition
Fourier transforms
Graphite
Gravitation
Heat
Infrared absorption
Infrared analysis
Intercalation
Materials science
Molecules
Natural gas
Nitrogen dioxide
Spectrometry
Temperature
Thermal decomposition
Thermodynamic properties
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Natural flake graphite and nitrogen dioxide (NO2) gas were used as host material and intercalating agent respectively, to prepare NO2-graphite intercalation compound (NO2-GIC) by direct gas-phase processing. Thermal properties of NO2-GIC were investigated by storage experimental and thermal gravity analysis, Fourier transform infrared spectrometry, and elemental analysis. Temperatures higher than 50 °C were disadvantageous to the maintenance of the chemical stability of NO2-GIC, easily resulting in the thermal decomposition of NO2-GIC. The intensity of the infrared absorption peaks at 147.29 °C and was stronger than that at other temperatures. This phenomenon suggests the large release of heat and gaseous molecules during decomposition processing of NO2-GIC. The mole ratio of NO2 and H2O gas molecules released was approximately 5.02:1, as analyzed by each infrared absorption peak area and elemental analysis results.
ISSN:0167-577X
1873-4979