Investigation of concentration hysteresis in methane oxidation on bimetallic Pt-Pd/Al2O3 catalyst by in situ XPS and mass spectrometry

被引：13

作者：

Chetyrin, Igor A. ^{[1
]}

Bukhtiyarov, Andrey, V ^{[1
]}

Prosvirin, Igor P. ^{[1
]}

Bukhtiyarov, Valerii, I ^{[1
]}

机构：

[1] Russian Acad Sci, Siberian Branch, GK Boreskov Inst Catalysis, Novosibirsk 630090, Russia

来源：

MENDELEEV COMMUNICATIONS | 2021年 / 31卷 / 05期

关键词：

concentration hysteresis; methane; oxidation; platinum; palladium; bimetallic catalysts; in situ XPS; mass spectrometry; IDENTIFICATION; PD(111); STATE; ESCA;

D O I：

10.1016/j.mencom.2021.09.014

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A combination of in situ XPS and mass spectrometry was used to investigate concentration hysteresis in the lowtemperature oxidation of methane over a bimetallic Pt-Pd catalyst. It was shown that a decrease in the oxygen concentration leads to a sharp increase in the catalytic activity of the sample under study. The transition of the catalyst to a high/low activity state occurs due to the partial reduction/oxidation of the active component, with both platinum and palladium participating in the methane oxidation reaction.

引用

页码：635 / 637

页数：3

共 24 条

[1] Nanoporous alloy aggregates: synthesis and electrocatalytic activity [J].

Anumol, E. A. ;

Halder, Aditi ;

Nethravathi, C. ;

Viswanath, B. ;

Ravishankar, N. .

JOURNAL OF MATERIALS CHEMISTRY, 2011, 21 (24) :8721-8726

[2] Nature of the N-Pd Interaction in Nitrogen-Doped Carbon Nanotube Catalysts [J].

Arrigo, Rosa ;

Schuster, Manfred E. ;

Xie, Zailai ;

Yi, Youngmi ;

Wowsnick, Gregor ;

Sun, Li L. ;

Hermann, Klaus E. ;

Friedrich, Matthias ;

Kast, Patrick ;

Haevecker, Michael ;

Knop-Gericke, Axel ;

Schloegl, Robert .

ACS CATALYSIS, 2015, 5 (05) :2740-2753

[3] ESCA STUDY OF SPUTTERED PLATINUM FILMS [J].

BANCROFT, GM ;

ADAMS, I ;

COATSWORTH, LL ;

BENNEWITZ, CD ;

BROWN, JD ;

WESTWOOD, WD .

ANALYTICAL CHEMISTRY, 1975, 47 (03) :586-588

[4] ESCA STUDY OF TERMINATION OF PASSIVATION OF ELEMENTAL METALS [J].

BARR, TL .

JOURNAL OF PHYSICAL CHEMISTRY, 1978, 82 (16) :1801-1810

[5] Anomalous steady-state and spatio-temporal features of methane oxidation on Pt/Pd/Al2O3 monolith spanning lean and rich conditions [J].

Bugosh, Gregory S. ;

Easterling, Vencon G. ;

Rusakova, Irene A. ;

Harold, Michael P. .

APPLIED CATALYSIS B-ENVIRONMENTAL, 2015, 165 :68-78

[6]

Chetyrin IA, 2017, CHEM SUSTAIN DEV, V25, P91, DOI 10.15372/KhUR20170113

[7] In Situ XPS and MS Study of Methane Oxidation on the Pd-Pt/Al2O3 Catalysts [J].

Chetyrin, Igor A. ;

Bukhtiyarov, Andrey V. ;

Prosvirin, Igor P. ;

Khudorozhkov, Alexander K. ;

Bukhtiyarov, Valerii I. .

TOPICS IN CATALYSIS, 2020, 63 (1-2) :66-74

[8] Bimetallic Pt-Metal catalysts for the decomposition of methanol: Effect of secondary metal on the oxidation state, activity, and selectivity of Pt [J].

Croy, Jason R. ;

Mostafa, S. ;

Hickman, L. ;

Heinrich, H. ;

Roldan Cuenya, B. .

APPLIED CATALYSIS A-GENERAL, 2008, 350 (02) :207-216

[9] Effects of Ce on catalytic combustion of methane over Pd-Pt/Al2O3 catalyst [J].

Fan, Xing ;

Wang, Fan ;

Zhu, Tianle ;

He, Hong .

JOURNAL OF ENVIRONMENTAL SCIENCES, 2012, 24 (03) :507-511

[10] Methane oxidation on Pd(111):: In situ XPS identification of active phase [J].

Gabasch, Harald ;

Hayek, Konrad ;

Kloetzer, Bernhard ;

Unterberger, Werner ;

Kleimenov, Evgueni ;

Teschner, Detre ;

Zafeiratos, Spiros ;

Haevecker, Michael ;

Knop-Gericke, Axel ;

Schloegl, Robert ;

Aszalos-Kiss, Balazs ;

Zemlyanov, Dmitry .

JOURNAL OF PHYSICAL CHEMISTRY C, 2007, 111 (22) :7957-7962

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