PdIn/Al2O3 Intermetallic Catalyst: Structure and Catalytic Characteristics in Selective Hydrogenation of Acetylene

被引：17

作者：

Markov, P., V ^{[1
,2
]}

Bukhtiyarov, A., V ^{[2
,3
]}

Mashkovsky, I. S. ^{[1
]}

Smirnova, N. S. ^{[2
]}

Prosvirin, I. P. ^{[2
]}

Vinokurov, Z. S. ^{[2
,3
]}

Panafidin, M. A. ^{[2
]}

Baeva, G. N. ^{[1
]}

Zubavichus, Ya, V ^{[2
,3
]}

Bukhtiyarov, V., I ^{[2
]}

Stakheev, A. Yu ^{[1
]}

机构：

[1] Russian Acad Sci, Zelinsky Inst Organ Chem, Moscow 119991, Russia

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

[3] Novosibirsk State Univ, Novosibirsk 630090, Russia

来源：

KINETICS AND CATALYSIS | 2019年 / 60卷 / 06期

关键词：

gas-phase hydrogenation of acetylene; bimetallic catalysts; nanoparticles; catalyst structure; palladium; indium; isolated Pd sites; intermetallics; LIQUID-PHASE HYDROGENATION; ATOM PD SITES; SURFACE DYNAMICS; PART II; GA; SEMIHYDROGENATION; DEHYDROGENATION; REACTIVITY; STABILITY; PD2GA;

D O I：

10.1134/S0023158419060065

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 structure and catalytic characteristics of a bimetallic catalyst containing Pd1In1 nanoparticles deposited on the surface of gamma-Al2O3 were studied. The formation of intermetallic nanoparticles was determined by X-ray diffraction analysis and confirmed by X-ray photoelectron spectroscopy and IR spectroscopy of adsorbed CO. In the hydrogenation of acetylene in excess ethylene, PdIn/Al2O3 had significantly higher selectivity of ethylene formation (similar to 86%) than monometallic Pd/Al2O3 (similar to 35%). The high selectivity of PdIn/Al2O3 is explained by two factors: (1) the formation of monatomic Pd-1 sites isolated from one another by In atoms and (2) the change in the electronic state of Pd atoms in the intermetallic nanoparticles.

引用

页码：842 / 850

页数：9

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