Open AccessPhysicochemical characteristics of the wide fraction of the coal tar from ArselorMittal Temirtau, JSC
Author(s) -
A. T. Ordabayeva,
М. Г. Мейрамов,
А. М. Газалиев
Publication year - 2020
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1611/1/012024
Subject(s) - catalysis , naphthalene , coal tar , fraction (chemistry) , selectivity , chemistry , hydrodesulfurization , cobalt , chemical engineering , coke , carbon fibers , composite number , organic chemistry , materials science , coal , composite material , engineering
Gas-liquid chromatography was used to establish the composition of the wide fraction with a final boiling point of up to 410 °C that includes high-boiling—primarily polyaromatic—compounds. Binary composite iron- and cobalt-based catalysts were synthesized on the substrate from synthetic zeolites and carbon carrier for hydrocatalytic processing of the wide fraction of the tar. The paper elucidates the conversion degree and quantitative composition of the forming products to be different and dependent on the activity and selectivity of the catalysts that, in their turn, are connected with the surface area, dimension and porous structure. When hydrogenating the tar wide fraction in the presence of composite catalysts, such as Fe-Co/CaA, Fe-Co/C and Fe-Co/ZSM, the content of naphthalene derivatives reduces as compared to their initial content in the fraction. This is due to the hydrogenation of naphthalene during the hydrocatalytic processing of the tar fraction, which yields tetraline. It was established that the iron-containing binary composite catalyst on the carbon carrier manifests higher catalytic activity and selectivity as compared to the catalysts based on synthetic zeolites.