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Ethanol dehydrogenation over Cu catalysts promoted with Ni : stability control

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Abstract
NiCu alloyed catalysts are investigated for ethanol dehydrogenation. Seven Xwt%Ni-Ywt%Cu/Mg(Al)(Ni)(Cu)O-x catalysts, (X = 0.5 or 1, Y = 0, 5, 10 or 20) have been compared with a 10 wt%Cu/Mg(Al)(Cu)O-x benchmark. It was found that Ni promotion increases the turn-over frequency of a Cu-based catalyst. Two deactivation regimes were observed, i.e., a fast deactivation within the first hours on stream during which the acetaldehyde selectivity improved, followed by a slower deactivation. TPO and STEM indicated that surface carbon formation and sintering were likely at the origin of respectively the first and second deactivation regime. On the best performing catalyst, i.e., 1 wt%Ni-10 wt%Cu/Mg(Al)(Ni)(Cu)O-x, no fast deactivation regime was observed and the lowest amount of carbon was produced. Upon feeding 30 wt%H2O/ethanol, the activity of all NiCu catalysts increased. Overall, 1 wt%Ni-10 wt%Cu/Mg(Al)(Ni)(Cu)O-x was the best performing catalyst with a TOF of 0.09s(-1) and an acetaldehyde selectivity of 99 %.
Keywords
Process Chemistry and Technology, Catalysis, Acetaldehyde, NiCu, Alloy, Bio-ethanol, Deactivation, PDZN NANOPARTICLE CATALYST, HIGHLY EFFICIENT CATALYST, GAS SHIFT REACTION, COPPER-CATALYSTS, HYDROGEN-PRODUCTION, CU/SIO2 CATALYST, ALLOY NANOPARTICLES, ETHYL-ACETATE, PT-GA, REDUCTION

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MLA
De Waele, Jolien, et al. “Ethanol Dehydrogenation over Cu Catalysts Promoted with Ni : Stability Control.” APPLIED CATALYSIS A - GENERAL, vol. 591, 2020, doi:10.1016/j.apcata.2019.117401.
APA
De Waele, J., Galvita, V., Poelman, H., Gabrovska, M., Nikolova, D., Damyanova, S., & Thybaut, J. (2020). Ethanol dehydrogenation over Cu catalysts promoted with Ni : stability control. APPLIED CATALYSIS A - GENERAL, 591. https://doi.org/10.1016/j.apcata.2019.117401
Chicago author-date
De Waele, Jolien, Vladimir Galvita, Hilde Poelman, Margarita Gabrovska, Dimitrinka Nikolova, Sonia Damyanova, and Joris Thybaut. 2020. “Ethanol Dehydrogenation over Cu Catalysts Promoted with Ni : Stability Control.” APPLIED CATALYSIS A - GENERAL 591. https://doi.org/10.1016/j.apcata.2019.117401.
Chicago author-date (all authors)
De Waele, Jolien, Vladimir Galvita, Hilde Poelman, Margarita Gabrovska, Dimitrinka Nikolova, Sonia Damyanova, and Joris Thybaut. 2020. “Ethanol Dehydrogenation over Cu Catalysts Promoted with Ni : Stability Control.” APPLIED CATALYSIS A - GENERAL 591. doi:10.1016/j.apcata.2019.117401.
Vancouver
1.
De Waele J, Galvita V, Poelman H, Gabrovska M, Nikolova D, Damyanova S, et al. Ethanol dehydrogenation over Cu catalysts promoted with Ni : stability control. APPLIED CATALYSIS A - GENERAL. 2020;591.
IEEE
[1]
J. De Waele et al., “Ethanol dehydrogenation over Cu catalysts promoted with Ni : stability control,” APPLIED CATALYSIS A - GENERAL, vol. 591, 2020.
@article{8644570,
  abstract     = {NiCu alloyed catalysts are investigated for ethanol dehydrogenation. Seven Xwt%Ni-Ywt%Cu/Mg(Al)(Ni)(Cu)O-x catalysts, (X = 0.5 or 1, Y = 0, 5, 10 or 20) have been compared with a 10 wt%Cu/Mg(Al)(Cu)O-x benchmark. It was found that Ni promotion increases the turn-over frequency of a Cu-based catalyst. Two deactivation regimes were observed, i.e., a fast deactivation within the first hours on stream during which the acetaldehyde selectivity improved, followed by a slower deactivation. TPO and STEM indicated that surface carbon formation and sintering were likely at the origin of respectively the first and second deactivation regime. On the best performing catalyst, i.e., 1 wt%Ni-10 wt%Cu/Mg(Al)(Ni)(Cu)O-x, no fast deactivation regime was observed and the lowest amount of carbon was produced. Upon feeding 30 wt%H2O/ethanol, the activity of all NiCu catalysts increased. Overall, 1 wt%Ni-10 wt%Cu/Mg(Al)(Ni)(Cu)O-x was the best performing catalyst with a TOF of 0.09s(-1) and an acetaldehyde selectivity of 99 %.},
  articleno    = {117401},
  author       = {De Waele, Jolien and Galvita, Vladimir and Poelman, Hilde and Gabrovska, Margarita and Nikolova, Dimitrinka and Damyanova, Sonia and Thybaut, Joris},
  issn         = {0926-860X},
  journal      = {APPLIED CATALYSIS A - GENERAL},
  keywords     = {Process Chemistry and Technology,Catalysis,Acetaldehyde,NiCu,Alloy,Bio-ethanol,Deactivation,PDZN NANOPARTICLE CATALYST,HIGHLY EFFICIENT CATALYST,GAS SHIFT REACTION,COPPER-CATALYSTS,HYDROGEN-PRODUCTION,CU/SIO2 CATALYST,ALLOY NANOPARTICLES,ETHYL-ACETATE,PT-GA,REDUCTION},
  language     = {eng},
  pages        = {8},
  title        = {Ethanol dehydrogenation over Cu catalysts promoted with Ni : stability control},
  url          = {http://dx.doi.org/10.1016/j.apcata.2019.117401},
  volume       = {591},
  year         = {2020},
}

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