XPS, UPS, TPD and TPR studies of oxygen species active in silver-catalysed ethylene epoxidation

被引：32

作者：

Bukhtiyarov, VI ^{[1
]}

Kaichev, VV ^{[1
]}

Podgornov, EA ^{[1
]}

Prosvirin, IP ^{[1
]}

机构：

[1] Boreskov Inst Catalysis, Novosibirsk 630090, Russia

来源：

CATALYSIS LETTERS | 1999年 / 57卷 / 04期

基金：

俄罗斯基础研究基金会;

关键词：

silver; oxygen; ethylene; epoxidation; isotope; photoelectron spectroscopy; temperature-programmed desorption;

D O I：

10.1023/A:1019016120040

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：

The covalent oxygen chemisorbed on silver has been characterised by XPS, UPS, TPD and TPR. It has been shown that this oxygen species active in ethylene epoxidation is characterised by full isotope scrambling in TPD spectra of O-2 and the absence of UPS lines located below the silver 4d zone. Both the results testify its atomic origin.

引用

页码：233 / 239

页数：7

共 23 条

[21] ON THE RELATION BETWEEN CATALYTIC PERFORMANCE AND MICROSTRUCTURE OF POLYCRYSTALLINE SILVER IN THE PARTIAL OXIDATION OF METHANOL [J].

SCHUBERT, H ;

TEGTMEYER, U ;

HEREIN, D ;

BAO, X ;

MUHLER, M ;

SCHLOGL, R .

CATALYSIS LETTERS, 1995, 33 (3-4) :305-319

[22] THE MECHANISM OF ETHYLENE EPOXIDATION [J].

VANSANTEN, RA ;

DEGROOT, CPM .

JOURNAL OF CATALYSIS, 1986, 98 (02) :530-539

[23] THE MECHANISM OF ETHYLENE EPOXIDATION [J].

VANSANTEN, RA ;

KUIPERS, HPCE .

ADVANCES IN CATALYSIS, 1987, 35 :265-321

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