Study of Metal-Humic Catalysts before and After the Gas Desulphurization Process Using Thermal Analysis

World Multidisciplinary Earth Sciences Symposium 2017

Szyszka, Danuta^1,2 ; Wieckowska, Jadwiga^2

Faculty of Geoengineering, Mining and Geology, Wroclaw University of Science and Technology, Wybrzeze Wyspianskiego 27, Wroclaw

50-370, Poland^1

Faculty of Geoengineering, Mining and Geology, Wroclaw University of Science and Technology, Na Grobli 15, Wroclaw

50-421, Poland^2

关键词: Conversion process;    Desulphurization process;    DTA curves;    Endothermic peaks;    Humic compounds;    Metal carbonates;    Perkin elmer;    Thermogravimetric analysis and differential thermal analysis;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/95/4/042070/pdf
DOI  :  10.1088/1755-1315/95/4/042070

来源: IOP

【 摘 要 】

The study of metal-humic catalysts before and after the SO2conversion has been carried out using thermal analysis. The thermogravimetric analysis and differential thermal analysis has been carried out using Perkin-Elmer TGA 7 and DTA 7 equipment in an argonic atmosphere. The heating rate of samples in the DTA was 10 °C/min., and in the TGA 40 °C/min. The following catalysts have been chosen for analysis: H-Pb2+/450 °C, H-B/450 °C, H-Sn2+/450 °C, H-Ce4+. The study of metal-humic catalysts using thermal analysis has shown that, in the DTA curves of studied catalysts before SO2conversion, endothermic peaks related to decomposition of metal carbonates, melting of metals or decomposition of metal-humic bonding. In the DTA curves after the SO2conversion process, there are additional endothermic peaks related to the presence of sulphur in the metal-humic compounds and to thermal decomposition of those bonds.