Thermal hazard evaluation of carbon nanotubes with sulfuric acid by DSC

被引：10

作者：

Chang, C. -W. ^{[1
]}

Chou, Y. -C. ^{[1
]}

Tseng, J. -M. ^{[2
]}

Liu, M. -Y. ^{[3
]}

Shu, C. -M. ^{[1
]}

机构：

[1] NYUST, Dept Safety Hlth & Environm Engn, Touliu 64002, Yunlin, Taiwan

[2] NYUST, Grad Sch Engn Sci & Technol, Doctoral Program, Touliu 64002, Yunlin, Taiwan

[3] Chien Kuo Technol Univ, Changhua 50094, Taiwan

来源：

JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY | 2009年 / 95卷 / 02期

关键词：

DSC; heat of decomposition; multi-walled carbon nanotubes (MWNTs); sulfuric acid (H2SO4); thermokinetic parameters; DECOMPOSITION; KINETICS;

D O I：

10.1007/s10973-008-9163-3

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

Many concerns over unsafe or unknown properties of multi-walled carbon nanotubes (MWNTs) have been raised. The thermal characteristics regarding stability would represent potential hazards during the production or utilization stage and could be determined by calorimetric tests for various thermokinetic parameters. Differential scanning calorimetry (DSC) was employed to evaluate the thermokinetic parameters for MWNTs at various compositions. Thermoanalytical curves showed that the average heat of decomposition (Delta H (d)) of the MWNTs samples in a manufacturing process was about 31,723 J g(-1), by identifying them as an inherently hazardous material. In this study, significant thermal analysis appeared in the presence of sulfuric acid (H2SO4). From the DSC experiments, the purification process of MWNTs could induce an unexpected reaction in the condition of batch addition with reactants of H2SO4. The results can be applied for designing emergency relief system and emergency rescue strategies during a perturbed situation or accident.

引用

页码：639 / 643

页数：5

共 17 条

[1]

[Anonymous], HSL200412

[2] Mechanism and kinetics of decomposition from isothermal DSC data: Development and application [J].

Chervina, S ;

Bodman, GT .

PROCESS SAFETY PROGRESS, 1997, 16 (02) :94-100

[3]

DEAN KA, 2001, APPL PHYS LETT, V79, P121

[4] A CARBON NANOTUBE FIELD-EMISSION ELECTRON SOURCE [J].

DEHEER, WA ;

CHATELAIN, A ;

UGARTE, D .

SCIENCE, 1995, 270 (5239) :1179-1180

[5] PHYSICS OF CARBON NANOTUBES [J].

DRESSELHAUS, MS ;

DRESSELHAUS, G ;

SAITO, R .

CARBON, 1995, 33 (07) :883-891

[6]

DUH YS, 1995, 2 INT C EXH LOSS PRE

[7]

DUH YS, 1995, INT S RUN REACT PRES

[8] CARBON NANOTUBES [J].

EBBESEN, TW .

ANNUAL REVIEW OF MATERIALS SCIENCE, 1994, 24 :235-264

[9] HELICAL MICROTUBULES OF GRAPHITIC CARBON [J].

IIJIMA, S .

NATURE, 1991, 354 (6348) :56-58

[10]

JIN J, 2007, THERMOCHIM ACTA, DOI DOI 10.1016/J.TCA.02.003

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