Article Title

Au/CuSiO₃ nanotubes: High-performance robust catalysts for selective oxidation of ethanol to acetaldehyde

Authors

Xianjun Du, Department of Chemistry & Collaborative Innovation Center for Nanomaterial Science and Engineering, Tsinghua University, Beijing 100084, China
Ninghua Fu, Department of Chemistry & Collaborative Innovation Center for Nanomaterial Science and Engineering, Tsinghua University, Beijing 100084, China
Shaolong Zhang, Department of Chemistry & Collaborative Innovation Center for Nanomaterial Science and Engineering, Tsinghua University, Beijing 100084, China
Chen Chen, Department of Chemistry & Collaborative Innovation Center for Nanomaterial Science and Engineering, Tsinghua University, Beijing 100084, China
Dingsheng Wang, Department of Chemistry & Collaborative Innovation Center for Nanomaterial Science and Engineering, Tsinghua University, Beijing 100084, China
Yadong Li, Department of Chemistry & Collaborative Innovation Center for Nanomaterial Science and Engineering, Tsinghua University, Beijing 100084, China

Keywords

ultrathin, nanowires, AuPd alloy, catalysts

Abstract

Novel gold-supporting silicate nanotubes are synthesized via a hydrothermalmethod followed by colloid deposition. Their catalytic performance for theselective oxidation of ethanol to acetaldehyde is assessed. The results show thatAu/CuSiO3 nanotubes exhibit both high activity and selectivity at high gashourly space velocity (GHSV). Ethanol conversion can reach up to ~98%, andthe selectivity for acetaldehyde is ~93% at 250 °C and ~100,000 mL·gcat–1·h–1. Incomparison, the catalytic activity of Au/MgSiO3 nanotubes is relatively low, andethanol conversion reaches only ~25% at 250 °C. However, when Cu species areadded to Au/MgSiO3, the catalytic activity improves significantly, indicatingthat the interactions between Au nanoparticles and Cu species are responsiblefor the high performance for selective oxidation of ethanol to acetaldehyde.

Graphical Abstract

DOI

https://doi.org/10.1007/s12274-016-1155-1

Publisher

Tsinghua University Press

Recommended Citation

Xianjun Du,Ninghua Fu,Shaolong Zhang,Chen Chen,Dingsheng Wang,Yadong Li, Au/CuSiO3 nanotubes: High-performance robust catalysts for selective oxidation of ethanol to acetaldehyde. NanoRes.2016, 9(9): 2681–2686