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

被引：32

作者：

Mierczynski, Pawel ^{[1
]}

Vasilev, Krasimir ^{[2
]}

Mierczynska, Agnieszka ^{[3
]}

Maniukiewicz, Waldemar ^{[1
]}

Ciesielski, Radoslaw ^{[1
]}

Rogowski, Jacek ^{[1
]}

Szynkowska, Iwona M. ^{[1
]}

Trifonov, A. Yu ^{[4
]}

Dubkov, Sergey V. ^{[4
]}

Gromov, Dmitry G. ^{[4
]}

Maniecki, Tomasz P. ^{[1
]}

机构：

[1] Lodz Univ Technol, Inst Gen & Ecol Chem, Zeromskiego 116, PL-90924 Lodz, Poland

[2] Univ S Australia, Mawson Inst, Adelaide, SA 5095, Australia

[3] Australian Wine Res Inst, Hartley Grove Cnr Paratoo Rd, Urrbrae Adelaide, SA 5064, Australia

[4] Natl Res Univ Elect Technol MIET, Pr 4806 5, Moscow 124498, Russia

来源：

CATALYSIS SCIENCE & TECHNOLOGY | 2016年 / 6卷 / 12期

关键词：

WALLED CARBON NANOTUBES; WATER-GAS SHIFT; HYDROGEN-PRODUCTION; PARTIAL OXIDATION; CU/ZNO/AL2O3; CATALYSTS; DEPOSITION-PRECIPITATION; HOMOGENEOUS PRECIPITATION; SELECTIVE HYDROGENATION; AU-CU/TIO2; SUPPORTED CATALYSTS;

D O I：

10.1039/c5cy01667c

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

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.

引用

页码：4168 / 4183

页数：16

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