Inhaltszusammenfassung

The introduction of carbon compounds into refractory materials leads to significant im-provements in technological properties, espe-cially with regard to thermal shock resistance. However, regulations are becoming more strin-gent due to negative impact on human health and the environment. In this context, organic binders such as coal tar pitches containing high levels of polycyclic aromatic hydrocarbons are of particular scientific interest. Despite inten-sive research, their specific chemica...The introduction of carbon compounds into refractory materials leads to significant im-provements in technological properties, espe-cially with regard to thermal shock resistance. However, regulations are becoming more strin-gent due to negative impact on human health and the environment. In this context, organic binders such as coal tar pitches containing high levels of polycyclic aromatic hydrocarbons are of particular scientific interest. Despite inten-sive research, their specific chemical composi-tion is still not completely clarified. In this study, two commercial binder systems with dif-ferent softening points used in refractory mate-rials were investigated. For this purpose, a non-target approach was applied. Due to the com-plexity of the samples and the large fractions of semi- and non-volatile compounds, a combina-tion of different analytical methods was ap-plied. In particular, high-resolution time-of-flight mass spectrometry (HR-TOFMS) proved to be a powerful tool for gaining deeper insights into the structure of these samples, such as mo-lecular weight distribution or aromaticity. In addition, further information on the occurrence and distribution of heteroatomic compounds such as S-, N- and O-derivates could be ob-tained.» weiterlesen» einklappen

Autoren

Klassifikation

DFG Fachgebiet:
Materialwissenschaft

DDC Sachgruppe:
Ingenieurwissenschaften