The state of palladium and copper on the surface of freshly prepared low temperature carbon monoxide oxidadation catalyst PdCl2-CuCl2/γ-Al2O3
Abstract
The EXAFS/XANES, XRD, SEM methods were used for examination of freshly prepared low temperature carbon monoxide oxidation in air catalyst PdCl2-CuCl2/γ-Al2O3 active components states. The Cu2Cl(OH)3 phase with particle size 100-300 nm and tetrachloropalladat particles were identified on γ-Al2O3 surface. According to EXAFS data one of the palladium chloride bonds is longer then another ones. There is no direct interaction between palladium and copper, i.e. there is no common active center including palladium and copper on the γ-Al2O3 surface responsible on the low temperature carbon monoxide oxidation in air.
Keywords
catalyst,
low temperature oxidation,
carbon monoxide,
palladium(II) chloride,
copper(II) chloride,
γ-aluminum oxide,
trihydroxide-chloride copper(II),
XANES,
EXAFS,
SEM
541.128.13; 546.262.3-31
About the Authors
D. N. Titov
M.V. Lomonosov Moscow State University of Fine Chemical Technologies, 86, Vernadskogo pr., Moscow 119571
Russian Federation
Russian Federation
L. G. Bruk
M.V. Lomonosov Moscow State University of Fine Chemical Technologies, 86, Vernadskogo pr., Moscow 119571
Russian Federation
Russian Federation
I. V. Oshanina
M.V. Lomonosov Moscow State University of Fine Chemical Technologies, 86, Vernadskogo pr., Moscow 119571
Russian Federation
Russian Federation
O. N. Temkin
M.V. Lomonosov Moscow State University of Fine Chemical Technologies, 86, Vernadskogo pr., Moscow 119571
Russian Federation
Russian Federation
G. M. Kuz’micheva
M.V. Lomonosov Moscow State University of Fine Chemical Technologies, 86, Vernadskogo pr., Moscow 119571
Russian Federation
Russian Federation
Ya. V. Zubavichus
РНЦ «Курчатовский институт»
Russian Federation
Russian Federation
A. A. Veligzhanin
РНЦ «Курчатовский институт»
Russian Federation
Russian Federation
N. V. Sadovskaya
ФГУП «НИФХИ им. Л.Я. Карпова»
Russian Federation
Russian Federation
References
1. Ракитская, Т. Л. Катализаторы низкотемпературного окисления монооксида углерода / Т. Л. Ракитская, А. А. Эннан, В. Я. Паина. - М.: ЦИНТИХИМНЕФТЕМАШ, 1991. - 40 с.
2. Кинетика и механизм окисления монооксида углерода на нанесённом металлокомплексном катализаторе PdCl2*CuCl2/γ-Al2O3 / И. А. Котарева [и др.] // Кинетика и катализ. - 2008. - Т. 49, № 5. - С. 22-30.
3. Pat. 3790662 U.S., C01b 31/20, 17/68. Palladium compositions suitable as oxidation catalysts / W. G. Lloyd, D. R. Rowe. - № 223970; filed 07.02.72; patented 05.02.74.
4. Low-temperature oxidation of CO by a heterogenized Wacker catalyst / M. N. Desai [et. al.] // J. of catalysis. - 1983. - Vol. 79, № 2. - P. 95-103.
5. Восстановление солей меди(II) окисью углерода в водных растворах комплексов палладия(II) / В. А. Голодов [и др.] // Кинетика и катализ. - 1984. - Т. 25, № 2. - С. 330.
6. Окисление оксида углерода дикислородом в присутствии палладиевых катализаторов. Перспективы создания новых низкотемпературных катализаторов реакции / Л. И. Кузнецова [и др.] // Кинетика и катализ. - 1985. - Т. 25, № 5. - С. 1029-1043.
7. Palladium-copper-DMF complexes involved in the oxidation alkenes / Takahiro Hosokawa [et. al.] // J. of Organometallic Chemistry. - 1998. - Vol. 551. - P. 387-389.
8. Выбор носителя для приготовления катализатора низкотемпературного окисления монооксида углерода / И. А. Котарева [и др.] // Вестник МИТХТ. - 2007. - Т. 2, № 4. - С. 72-77
9. Effects of copper phase on CO oxidation over supported wacker-type catalysts / E. D. Park, J. S. Lee // J. of catalysis. - 1998. - Vol. 180. - P. 123-131.
10. Park, E. D. Effect of surface treatment of the support on CO oxidation over carbone-supported wacker-type catalysts / E. D. Park, J. S. Lee // J. of catalysis. - 2000. - Vol. 193. - P. 5-15.
11. Механизм низкотемпературного окисления оксида углерода в воздухе на катализаторе PdCl2*CuCl2/γ-Al2O3 / Д. Н. Титов [и др.] // Актуальные проблемы нефтехимии : докл. III Рос. конф., Звенигород, Россия, 27 - 30 окт. 2009. - Звенигород, - 2009. - Ч. 2. - С. 141-142.
12. Supported PdCl2-CuCl2 catalysts for carbon monoxide oxidation II. XAFS characterization / J. S. Lee [et. al.] // Applied catalysis B: environmental. - 1996. - Vol. 7. - P. 199-212.
13. Structure and electronic state of PdCl2-CuCl2 catalysts supported on activated carbon / Yasushi Yamamoto [et. al.] // J. of catalysis. - 1996. - Vol. 161. - P. 577-586.
14. Choi, K. I. CO oxidation over Pd and Cu catalysts II. Unreduced bimetallic PdCl2-CuCl2 dispersed on Al2O3 or carbon / K. I. Choi, M. A. Vannice // J. of catalysis. - 1991. - Vol. 127. - P. 489-511.
15. Пат. № 2267354 PФ, МПК B 01 J 23/89, B 01 J 31/30, B 01 D 53/62. Катализатор для очистки воздуха от монооксида углерода / Л. Г. Брук [и др.]. - № 2004126047/04 ; заявл. 27.08.04 ; опубл. 10.01.06, Бюл. № 1.
16. Hammersley, A. P. FIT2D V9.129. Reference Manual. V3.1. ESRF Internal Report: ESRF98HA01T / A. P. Hammersley. - 1998.
17. Ravel, B. ATHENA, ARTEMIS, HEPHAESTUS: data analysis for X-ray absorption spectroscopy using IFEFFIT / B. Ravel, M. Newville // J. synchrotron rad. - 2005. - Vol. 12. - P. 537.
18. Real-space multiple-scattering calculation of XANES / A. L. Ankudinov [et. al] // Phys. rev. B. - 1998. - Vol. 58. - P. 7565.
19. Structural Materials Science end-station at the Kurchatov Synchrotron Radiation Source: Recent instrumentation upgrades and experimental results / A. A. Chernyshov [et. al] // Nucl. instr. meth. phys. res. A. - 2009. - Vol. 603. - P. 95.
20. Molecular structure of Pd6Cl12 on single crystals chemically grown at room temperature / D. B. Dell'Amico [et. al.] // Angew. chem. (int. ed. engl.). - 1996. - Vol. 35. - P.1331-1333.
21. A redetermination of the crystal structure of cupric chloride dehydrate / S. Brownstein [et. al] // Z. kristallogr. - 1989. - Vol. 189. - P. 13-15.
22. The crystal structure of paratacamite / M.E. Fleet // Acta crystallogr. B. - 1975. - Vol. 31. - P. 183-187.
23. Ohtaki, H. Structure and Dynamics of Hydrated Ions / H. Ohtaki, T. Radnai // Chem. rev. - 1993. -Vol. 93. - P. 1157-1204.
24. A computational and experimental study on the Jahn-Teller effect in the hydrated copper(II) ion. Comparisons with hydrated nickel(II) ions in aqueous solution and solid Tutton's salts / B. Beagley [et. al.] // J. phys.: Condens. Matter. - 1989. - Vol. 1. - P. 2395-2408.
Review
For citations:
Titov D.N., Bruk L.G., Oshanina I.V., Temkin O.N., Kuz’micheva G.M., Zubavichus Ya.V., Veligzhanin A.A., Sadovskaya N.V. The state of palladium and copper on the surface of freshly prepared low temperature carbon monoxide oxidadation catalyst PdCl2-CuCl2/γ-Al2O3. Fine Chemical Technologies. 2010;5(3):62-68. (In Russ.)
Views:
462
Email this article 
