PdIn/Al2O3 Intermetallic Catalyst: Structure and Catalytic Characteristics in Selective Hydrogenation of Acetylene
Full article
| Общее |
Language:
Английский,
Genre:
Full article,
Status:
Published,
Source type:
Translated
|
| Journal |
Kinetics and Catalysis
ISSN: 0023-1584
, E-ISSN: 1608-3210
|
| Output data |
Year: 2019,
Volume: 60,
Number: 6,
Pages: 838-845
Pages count
: 8
DOI:
10.1134/S0023158419060065
|
| Tags |
gas-phase hydrogenation of acetylene, bimetallic catalysts, nanoparticles, catalyst structure, palladium, indium, isolated Pd centers, intermetallide |
| Authors |
Markov P.V.
1,2
,
Bukhtiyarov A.V.
2,3
,
Mashkovskii 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
|
| Affiliations |
| 1 |
Zelinskii Institute of Organic Chemistry, Russian Academy of Sciences
|
| 2 |
Boreskov Institute of Catalysis, Siberian Branch, Russian Academy of Sciences
|
| 3 |
Novosibirsk State University
|
|
Funding (2)
|
1
|
Russian Science Foundation
|
16-13-10530
|
|
2
|
Russian Science Foundation
|
19-13-00285
|
The structure and catalytic characteristics of a bimetallic catalyst containing Pd1In1 nanoparticles deposited on the surface of γ-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 (~86%) than monometallic Pd/Al2O3 (~35%). The high selectivity of PdIn/Al2O3 is explained by two factors: (1) the formation of monatomic Pd1 sites isolated from one another by In atoms and (2) the change in the electronic state of Pd atoms in the intermetallic nanoparticles