Au promotional effects on the synthesis of H2O2 directly from H2 and O2 on supported Pd-Au alloy catalysts

Yi Fan Han; Ziyi Zhong; Kanaparthi Ramesh; Fengxi Chen; Luwei Chen; Tim White; Qiuling Tay; Siti Nurbaya Yaakub; Zhan Wang

doi:10.1021/jp072934g

Au promotional effects on the synthesis of H₂O₂ directly from H₂ and O₂ on supported Pd-Au alloy catalysts

Yi Fan Han^*, Ziyi Zhong, Kanaparthi Ramesh, Fengxi Chen, Luwei Chen, Tim White, Qiuling Tay, Siti Nurbaya Yaakub, Zhan Wang

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

114 Scopus citations

Abstract

Supported Pd, Au, and Pd-Au alloy catalysts are characterized with in situ diffuse reflectance infrared Fourier transform spectroscopy of CO adsorption (DRIFTS), quantitative powder X-ray diffraction, and X-ray photoelectron spectroscopy. The spectroscopic results presented in the paper demonstrate the existence of electron density transfer between Pd and Au atoms in alloy surfaces. In particular, the modification of the Pd electronic structure by the addition of Au is confirmed probably for the first time by the DRIFT spectra. The relationship between surface composition and catalyst performance in the synthesis of hydrogen peroxide directly from hydrogen and oxygen was established. Preliminary results indicate that the activity and selectivity of Pd-Au alloy catalysts can be significantly enhanced through adjusting the surface structures by changing the Au content in alloys.

Original language	English
Pages (from-to)	8410-8413
Number of pages	4
Journal	Journal of Physical Chemistry C
Volume	111
Issue number	24
DOIs	https://doi.org/10.1021/jp072934g
State	Published - 21 Jun 2007
Externally published	Yes

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title = "Au promotional effects on the synthesis of H2O2 directly from H2 and O2 on supported Pd-Au alloy catalysts",

abstract = "Supported Pd, Au, and Pd-Au alloy catalysts are characterized with in situ diffuse reflectance infrared Fourier transform spectroscopy of CO adsorption (DRIFTS), quantitative powder X-ray diffraction, and X-ray photoelectron spectroscopy. The spectroscopic results presented in the paper demonstrate the existence of electron density transfer between Pd and Au atoms in alloy surfaces. In particular, the modification of the Pd electronic structure by the addition of Au is confirmed probably for the first time by the DRIFT spectra. The relationship between surface composition and catalyst performance in the synthesis of hydrogen peroxide directly from hydrogen and oxygen was established. Preliminary results indicate that the activity and selectivity of Pd-Au alloy catalysts can be significantly enhanced through adjusting the surface structures by changing the Au content in alloys.",

author = "Han, {Yi Fan} and Ziyi Zhong and Kanaparthi Ramesh and Fengxi Chen and Luwei Chen and Tim White and Qiuling Tay and Yaakub, {Siti Nurbaya} and Zhan Wang",

year = "2007",

month = jun,

day = "21",

doi = "10.1021/jp072934g",

language = "英语",

volume = "111",

pages = "8410--8413",

journal = "Journal of Physical Chemistry C",

issn = "1932-7447",

publisher = "American Chemical Society",

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TY - JOUR

T1 - Au promotional effects on the synthesis of H2O2 directly from H2 and O2 on supported Pd-Au alloy catalysts

AU - Han, Yi Fan

AU - Zhong, Ziyi

AU - Ramesh, Kanaparthi

AU - Chen, Fengxi

AU - Chen, Luwei

AU - White, Tim

AU - Tay, Qiuling

AU - Yaakub, Siti Nurbaya

AU - Wang, Zhan

PY - 2007/6/21

Y1 - 2007/6/21

N2 - Supported Pd, Au, and Pd-Au alloy catalysts are characterized with in situ diffuse reflectance infrared Fourier transform spectroscopy of CO adsorption (DRIFTS), quantitative powder X-ray diffraction, and X-ray photoelectron spectroscopy. The spectroscopic results presented in the paper demonstrate the existence of electron density transfer between Pd and Au atoms in alloy surfaces. In particular, the modification of the Pd electronic structure by the addition of Au is confirmed probably for the first time by the DRIFT spectra. The relationship between surface composition and catalyst performance in the synthesis of hydrogen peroxide directly from hydrogen and oxygen was established. Preliminary results indicate that the activity and selectivity of Pd-Au alloy catalysts can be significantly enhanced through adjusting the surface structures by changing the Au content in alloys.

AB - Supported Pd, Au, and Pd-Au alloy catalysts are characterized with in situ diffuse reflectance infrared Fourier transform spectroscopy of CO adsorption (DRIFTS), quantitative powder X-ray diffraction, and X-ray photoelectron spectroscopy. The spectroscopic results presented in the paper demonstrate the existence of electron density transfer between Pd and Au atoms in alloy surfaces. In particular, the modification of the Pd electronic structure by the addition of Au is confirmed probably for the first time by the DRIFT spectra. The relationship between surface composition and catalyst performance in the synthesis of hydrogen peroxide directly from hydrogen and oxygen was established. Preliminary results indicate that the activity and selectivity of Pd-Au alloy catalysts can be significantly enhanced through adjusting the surface structures by changing the Au content in alloys.

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U2 - 10.1021/jp072934g

DO - 10.1021/jp072934g

M3 - 文章

AN - SCOPUS:34447559969

SN - 1932-7447

VL - 111

SP - 8410

EP - 8413

JO - Journal of Physical Chemistry C

JF - Journal of Physical Chemistry C

IS - 24

ER -

Au promotional effects on the synthesis of H₂O₂ directly from H₂ and O₂ on supported Pd-Au alloy catalysts

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