The effect of gold on modern bimetallic Au-Cu/MWCNT catalysts for the oxy-steam reforming of methanol

Pawel Mierczynski; Krasimir Vasilev; Agnieszka Mierczynska; Waldemar Maniukiewicz; Radoslaw Ciesielski; Jacek Rogowski; Iwona M. Szynkowska; A. Yu Trifonov; Sergey V. Dubkov; Dmitry G. Gromov; Tomasz P. Maniecki

doi:10.1039/c5cy01667c

The effect of gold on modern bimetallic Au-Cu/MWCNT catalysts for the oxy-steam reforming of methanol

Pawel Mierczynski, Krasimir Vasilev, Agnieszka Mierczynska, Waldemar Maniukiewicz, Radoslaw Ciesielski, Jacek Rogowski, Iwona M. Szynkowska, A. Yu Trifonov, Sergey V. Dubkov, Dmitry G. Gromov, Tomasz P. Maniecki

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Abstract

Copper and gold doped copper catalysts supported on multi-walled carbon nanotubes were prepared by wet impregnation and deposition-precipitation methods, respectively. The catalysts were tested in the oxy-steam reforming of methanol (OSRM) and characterized by XRD, SEM-EDS, TOF-SIMS, thermo-gravimetric analysis and temperature-programmed desorption of ammonia. The reactivity results showed the promotion effect of gold on the activity and selectivity of the copper catalysts in the OSRM. The formed Cu-Au alloy as an active phase was responsible for the activity and selectivity improvement of the bimetallic catalysts in the oxy-steam reforming of methanol. The formation of an Au-Cu alloy was confirmed by the XRD, TOF-SIMS and SEM-EDS techniques. The reducibility and acidity of the tested catalysts are important factors, which influence the activity of the copper and gold-copper catalysts.

Original language	English
Pages (from-to)	4168-4183
Number of pages	16
Journal	Catalysis Science and Technology
Volume	6
Issue number	12
DOIs	https://doi.org/10.1039/c5cy01667c
Publication status	Published - 21 Jun 2016
Externally published	Yes

Keywords

Bimetallic catalysts
Au–Cu/MWCNT
doped catalysts
Copper catalyst
gold catalyst
multi-walled carbon nanotubes
OSRM
Au-Cu
ToF-SIMS
SEM-EDS

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10.1039/c5cy01667cLicence: CC BY-NC

Published versionFinal published version, 2.98 MBLicence: CC BY-NC

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Mierczynski, P., Vasilev, K., Mierczynska, A., Maniukiewicz, W., Ciesielski, R., Rogowski, J., Szynkowska, I. M., Trifonov, A. Y., Dubkov, S. V., Gromov, D. G., & Maniecki, T. P. (2016). The effect of gold on modern bimetallic Au-Cu/MWCNT catalysts for the oxy-steam reforming of methanol. Catalysis Science and Technology, 6(12), 4168-4183. https://doi.org/10.1039/c5cy01667c

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title = "The effect of gold on modern bimetallic Au-Cu/MWCNT catalysts for the oxy-steam reforming of methanol",

abstract = "Copper and gold doped copper catalysts supported on multi-walled carbon nanotubes were prepared by wet impregnation and deposition-precipitation methods, respectively. The catalysts were tested in the oxy-steam reforming of methanol (OSRM) and characterized by XRD, SEM-EDS, TOF-SIMS, thermo-gravimetric analysis and temperature-programmed desorption of ammonia. The reactivity results showed the promotion effect of gold on the activity and selectivity of the copper catalysts in the OSRM. The formed Cu-Au alloy as an active phase was responsible for the activity and selectivity improvement of the bimetallic catalysts in the oxy-steam reforming of methanol. The formation of an Au-Cu alloy was confirmed by the XRD, TOF-SIMS and SEM-EDS techniques. The reducibility and acidity of the tested catalysts are important factors, which influence the activity of the copper and gold-copper catalysts.",

keywords = "Bimetallic catalysts, Au–Cu/MWCNT, doped catalysts, Copper catalyst, gold catalyst, multi-walled carbon nanotubes, OSRM, Au-Cu, ToF-SIMS, SEM-EDS",

author = "Pawel Mierczynski and Krasimir Vasilev and Agnieszka Mierczynska and Waldemar Maniukiewicz and Radoslaw Ciesielski and Jacek Rogowski and Szynkowska, {Iwona M.} and Trifonov, {A. Yu} and Dubkov, {Sergey V.} and Gromov, {Dmitry G.} and Maniecki, {Tomasz P.}",

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doi = "10.1039/c5cy01667c",

language = "English",

volume = "6",

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T1 - The effect of gold on modern bimetallic Au-Cu/MWCNT catalysts for the oxy-steam reforming of methanol

AU - Mierczynski, Pawel

AU - Vasilev, Krasimir

AU - Mierczynska, Agnieszka

AU - Maniukiewicz, Waldemar

AU - Ciesielski, Radoslaw

AU - Rogowski, Jacek

AU - Szynkowska, Iwona M.

AU - Trifonov, A. Yu

AU - Dubkov, Sergey V.

AU - Gromov, Dmitry G.

AU - Maniecki, Tomasz P.

PY - 2016/6/21

Y1 - 2016/6/21

N2 - Copper and gold doped copper catalysts supported on multi-walled carbon nanotubes were prepared by wet impregnation and deposition-precipitation methods, respectively. The catalysts were tested in the oxy-steam reforming of methanol (OSRM) and characterized by XRD, SEM-EDS, TOF-SIMS, thermo-gravimetric analysis and temperature-programmed desorption of ammonia. The reactivity results showed the promotion effect of gold on the activity and selectivity of the copper catalysts in the OSRM. The formed Cu-Au alloy as an active phase was responsible for the activity and selectivity improvement of the bimetallic catalysts in the oxy-steam reforming of methanol. The formation of an Au-Cu alloy was confirmed by the XRD, TOF-SIMS and SEM-EDS techniques. The reducibility and acidity of the tested catalysts are important factors, which influence the activity of the copper and gold-copper catalysts.

AB - Copper and gold doped copper catalysts supported on multi-walled carbon nanotubes were prepared by wet impregnation and deposition-precipitation methods, respectively. The catalysts were tested in the oxy-steam reforming of methanol (OSRM) and characterized by XRD, SEM-EDS, TOF-SIMS, thermo-gravimetric analysis and temperature-programmed desorption of ammonia. The reactivity results showed the promotion effect of gold on the activity and selectivity of the copper catalysts in the OSRM. The formed Cu-Au alloy as an active phase was responsible for the activity and selectivity improvement of the bimetallic catalysts in the oxy-steam reforming of methanol. The formation of an Au-Cu alloy was confirmed by the XRD, TOF-SIMS and SEM-EDS techniques. The reducibility and acidity of the tested catalysts are important factors, which influence the activity of the copper and gold-copper catalysts.

KW - Bimetallic catalysts

KW - Au–Cu/MWCNT

KW - doped catalysts

KW - Copper catalyst

KW - gold catalyst

KW - multi-walled carbon nanotubes

KW - OSRM

KW - Au-Cu

KW - ToF-SIMS

KW - SEM-EDS

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The effect of gold on modern bimetallic Au-Cu/MWCNT catalysts for the oxy-steam reforming of methanol

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