Advanced pulse calibration techniques for the quantitative analysis of TG-FTIR data

被引：42

作者：

Marsanich, K

Barontini, F

Cozzani, V

Petarca, L

机构：

[1] Univ Pisa, Dipartimento Ingn Chim Chim Ind & Sci Mat, I-56126 Pisa, Italy

[2] CNR, Grp Nazl Difesa Rischi Chim Ind & Ecol, I-56126 Pisa, Italy

来源：

THERMOCHIMICA ACTA | 2002年 / 390卷 / 1-2期

关键词：

TG-FTIR; hyphenated techniques; quantitative evolved gas analysis; calibration techniques; thermal analysis;

D O I：

10.1016/S0040-6031(02)00114-4

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

Two different pulse calibration techniques to estimate the total quantities of evolved gaseous substances formed in thermogravimetric (TG)-FTIR runs were compared and assessed. A gas-pulse calibration method was based on the use of a specific device able of sending a known quantity of a gaseous compound of interest to the FTIR analyzer. A second calibration method was based on the vaporization in the TG analyzer of liquid solutions of the compound of interest. Data obtained by these techniques were compared to those from conventional concentration-based calibration. The results confirmed the reliability of pulse calibration techniques to obtain quantitative data on evolved gaseous products in TG-FTIR applications. Moreover, both the gas-pulse and the vaporization-based calibration techniques proved to have several advantages with respect to conventional techniques. Among these are the need of a more limited number of standards and no need for online gas dilution systems. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：153 / 168

页数：16

共 27 条

[1] QUANTITATIVE GAS-ANALYSIS WITH FT-IR - METHOD FOR CO CALIBRATION USING PARTIAL LEAST-SQUARES WITH LINEARIZED DATA [J].