Chinese Journal of Analytical Chemistry 2010;38(3):393-396

doi:10.3724/SP.J.1096.2010.00393

Establishment of Atmosphere Pressure-Temperature Programmed Pyrolysis-Mass Spectrometric System and Its Application on Decarboxylation of Coal

Zhiqing WANG ; Zongqing BAI ; Wen LI ; Haokan CHEN

Keywords

Atmosphere pressure-temperature programmed pyrolysis-mass spectrometry; Hydrothermally treatment; Decarboxylation

Country

China

Language

Chinese

Abstract

A quartz tube reactor was designed to combine with a commercial mass spectrometer for on-line detecting the gases evolved during pyrolysis of coal and other samples with high volatile. The reliability and repeatability of this atmosphere pressure-temperature programmed pyrolysis-mass spectrum (AP-TPP-MS) system were tested by model compound and real coal sample. The results show that pyrolysis of model compound can give good response, less overlap or tailing gases evolution curves;and multi-peaks can be observed from the same gas curve of real sample. The reliability and repeatability of this system are perfect and the system can be applied to study the coals decarboxylation by comparing the CO_2 evolution curves.