A carbonized cobalt catalyst supported by acid-activated clay for the selective hydrogenation of acetylene
Aitugan A. Tanirbergenova S. Tileuberdi Y. Yucel O. Tugelbayeva D. Mansurov Z. Ongarbayev Y.
June 2021Springer Science and Business Media B.V.
Reaction Kinetics, Mechanisms and Catalysis
2021#133Issue 1277 - 292 pp.
This study focused on the purification of ethylene from acetylene using a catalyst made of cobalt deposited on a carbon-containing material, such as clay. Cobalt catalysts with different mass fractions were carbonized at a temperature of 550 °C, activated with 5% and 10% nitric acid and tested for the hydrogenation of acetylene to ethylene. The physicochemical properties were investigated by means of X-ray powder diffraction (XRD), scanning electron microscope (SEM) and TG/DSC. The reaction products were analyzed using a Chrom-3700 gas chromatograph and gas chromatography–mass spectrometry (Agilent 7890A/5975C). The conversion of a 7% Co/CL-10 catalyst, carbonized at 550 °C, was 82% at 100 °C, and reached 95% at 140 °C. Side reactions were activated when the temperature rose above 140 °C, which reduced the ethylene yield. The carbonized catalysts exhibited more activity than traditional impregnated catalysts that had not been subjected to carbonization. This paper outlines a simple method for preparing Co/CL-10 catalysts with high catalytic activities for the selective hydrogenation of acetylene, using the carbonization process on a chemically-activated carrier clay.
Acetylene , Acid treatment , Catalysts , Clay , Cobalt , Hydrogenation
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Al-Farabi Kazakh National University, Almaty, Kazakhstan
Institute of Combustion Problems, Almaty, Kazakhstan
Istanbul Technical University, Istanbul, Turkey
Al-Farabi Kazakh National University
Institute of Combustion Problems
Istanbul Technical University
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