Bimetallic CuPd nanoparticles supported on ZnO or graphene for CO and CO conversion to methane and methanol

Carbon dioxide (CO 2 ) and carbon monoxide (CO) hydrogenation to methane (CH 4 ) or methanol (MeOH) is a promising pathway to reduce CO 2 emissions and to mitigate dependence on rapidly depleting fossil fuels. Along these lines, a series of catalysts comprising copper (Cu) or palladium (Pd) nanopart...

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Published in:RSC sustainability 2024-10, Vol.2 (11), p.3276-3288
Main Authors: Maqbool, Qaisar, Dobrezberger, Klaus, Stropp, Julian, Huber, Martin, Kontrus, Karl-Leopold, Aspalter, Anna, Neuhauser, Julie, Schachinger, Thomas, Löffler, Stefan, Rupprechter, Günther
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Summary:Carbon dioxide (CO 2 ) and carbon monoxide (CO) hydrogenation to methane (CH 4 ) or methanol (MeOH) is a promising pathway to reduce CO 2 emissions and to mitigate dependence on rapidly depleting fossil fuels. Along these lines, a series of catalysts comprising copper (Cu) or palladium (Pd) nanoparticles (NPs) supported on zinc oxide (ZnO) as well as bimetallic CuPd NPs supported on ZnO or graphene were synthesized via various methodologies. The prepared catalysts underwent comprehensive characterization via high-resolution transmission electron microscopy (HRTEM), energy-dispersive X-ray spectroscopy (EDX) mapping, electron energy loss spectroscopy (EELS), X-ray diffraction (XRD), hydrogen temperature-programmed reduction and desorption (H 2 -TPR and H 2 -TPD), and deuterium temperature-programmed desorption (D 2 O-TPD). In the CO 2 hydrogenation process carried out at 20 bar and elevated temperatures (300 to 500 °C), Cu, Pd, and CuPd NPs (
ISSN:2753-8125
DOI:10.1039/d4su00339j