The Role of Chemisorbed Water in Formation and Stabilization of Active Sites on Pd/Alumina Oxidation Catalysts
Full article
| Общее |
Language:
Английский,
Genre:
Full article,
Status:
Published,
Source type:
Original
|
| Conference |
9th International Conference on Environmental Catalysis (ICEC2016)
10-13 Jul 2016
,
Newcastle
|
| Journal |
Catalysis Today
ISSN: 0920-5861
, E-ISSN: 1873-4308
|
| Output data |
Year: 2018,
Volume: 307,
Pages: 102-110
Pages count
: 9
DOI:
10.1016/j.cattod.2017.01.033
|
| Tags |
Alumina, Chemisorbed water, CO oxidation, Palladium catalysts, Stability |
| Authors |
Vedyagin Aleksey A.
1,2
,
Volodin Alexander M.
1
,
Kenzhin Roman M.
1
,
Stoyanovskii Vladimir O.
1
,
Rogov Vladimir A.
1,3
,
Kriventsov Vladimir V.
1
,
Mishakov Ilya V.
1,2
|
| Affiliations |
| 1 |
Boreskov Institute of Catalysis, Novosibirsk, 630090, Russian Federation
|
| 2 |
Novosibirsk State University, Novosibirsk 630090, Russian Federation
|
| 3 |
National Research Tomsk Polytechnic University, Tomsk 634050, Russian Federation
|
|
Funding (1)
|
1
|
Federal Agency for Scientific Organizations
|
0303-2016-0014
|
A series of Pd/Al2O3catalysts with different palladium loading was prepared by incipient wetness impreg-nation method. As it was shown by various physicochemical methods, palladium at concentrations notexceeding 0.5 wt.% favors to stabilize in an atomic dispersed ionic state. Appearance of PdO phase hasbeen firmly detected by TPR, DR UV–vis and EXAFS starting from Pd concentration of 1 wt.%. It was foundthat low-content Pd/Al2O3catalysts are characterized by high activity in CO oxidation due to atomicallydispersed palladium species tailored to the donor sites of the support. The presence of chemisorbed waterallows one to stabilize Pd in highly disperse state thus preventing the catalyst deactivation.