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,*^a Krasimir Vasilev,^b Agnieszka Mierczynska,^c Waldemar Maniukiewicz,^a Radoslaw Ciesielski,^a Jacek Rogowski,^a Iwona M. Szynkowska,^a A. Yu. Trifonov,^d Sergey V. Dubkov,^d Dmitry G. Gromov^d and Tomasz P. Maniecki^a

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^a Institute of General and Ecological Chemistry, Lodz University of Technology, Zeromskiego 116, 90-924 Lodz, Poland
E-mail: pawel.mierczynski@p.lodz.pl, mierczyn25@wp.pl
Fax: 0048 42 631 31 28
Tel: + 48 42 631 31 24

^b Mawson Institute, University of South Australia, Mawson Lakes SA 5095, Adelaide, Australia

^c The Australian Wine Research Institute, Waite Precinct, Hartley Grove cnr Paratoo Road, Urrbrae (Adelaide), SA 5064, Australia

^d National Research University of Electronic Technology (MIET), pr. 4806 5, Zelenograd, Moscow, 124498 Russia

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.

Catalysis Science & Technology

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

Abstract

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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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