Effect of Alumina Modification on the Structure of Cobalt-Containing Fischer–Tropsch Synthesis Catalysts According to Internal-Field 59Co NMR Data
Full article
| Общее |
Language:
Английский,
Genre:
Full article,
Status:
Published,
Source type:
Translated
|
| Journal |
Journal of Structural Chemistry
ISSN: 0022-4766
, E-ISSN: 1573-8779
|
| Output data |
Year: 2013,
Volume: 54,
Number: S1,
Pages: S102-S110
Pages count
: 9
DOI:
10.1134/S0022476613070093
|
| Tags |
Cobalt, Cobalt-containing catalysts, Internal-field 59Co NMR |
| Authors |
Andreev A.S.
1,2,3,4
,
Lapina O.B.
1,2
,
d’Espinose de Lacaillerie J.-B.
3,4
,
Khassin A.A.
1,2
|
| Affiliations |
| 1 |
G. K. Boreskov Institute of Catalysis, Siberian Division, Russian Academy of Sciences, Novosibirsk, Russia
|
| 2 |
Novosibirsk State University, Novosibirsk, Russia
|
| 3 |
University of Paris VI: Pierre et Marie Curie, Paris, France
|
| 4 |
Soft Matter Sciences and Engineering, UMR CNRS 7615, ESPCI ParisTech, France
|
|
Funding (5)
|
1
|
The Ministry of Education and Science of the Russian Federation
|
8429
|
|
2
|
Russian Foundation for Basic Research
|
13-03-00482
|
|
3
|
Президиум РАН
|
3.3
|
|
4
|
French Embassy in Moscow
|
|
|
5
|
Council for Grants of the President of the Russian Federation
|
СП-389.2012.1
|
An internal-field 59 Co NMR study of cobalt-containing Fischer–Tropsch synthesis catalysts supported on different alumina modifications was reported. The Co/-Al2O3sample was shown to contain single-domain fcc packing and stacking faults, whereas Co/-Al2O3gave signals from the fcc domain walls, hcp and stacking faults, thus indicating differences in the particle size of the studied samples. T2relaxation times were measured; their distribution in a spectrum is non-uniform, which allows signals to be distinguished by their relaxation times. Quantitative measurements of the relative atoms content in different packings revealed that the catalysts have mostly a defect structure. A brief historical background was presented to characterize the internal-field 59 Co NMR technique, the related problems, and different approaches to acquired data interpretation.