The Influence of the Synthesis Method on the Formation of Phase Composition and Catalytic Centers Gd2Zr2O7

Article Preview

Abstract:

The influence of the type of crystal structure of complex gadolinium oxides on their catalytic activity was studied using a wide range of physicochemical methods. It was shown that the synthesized nanocrystalline powders Gd2Zr2O7 form highly symmetric face-centered cubic crystal structures. In the course of catalytic experiments, it was found that the formation of a cubic structure increases the degree of conversion of propane and the shift of cracking temperatures to a lower area. The formation of various defects contributes to the course of the dehydrogenation or degradation reaction due to the different number of catalytic centers.

You might also be interested in these eBooks

Info:

Periodical:

Materials Science Forum (Volume 1009)

Pages:

69-74

Citation:

Online since:

August 2020

Export:

Price:

Permissions CCC:

Permissions PLS:

Сopyright:

© 2020 Trans Tech Publications Ltd. All Rights Reserved

Share:

Citation:

* - Corresponding Author

[1] E. B. Markova, A. S. Lyadov, and V. V. Kurilkin Features of Propane Conversion in the Presence of SmVO3 and SmVO4 // Russian Journal of Physical Chemistry A, 2016, V. 90, No. 9, P. 1754–1759.

DOI: 10.1134/s0036024416090193

Google Scholar

[2] Gurav H.R., Dama S., Samuel V., Chilukuri S. Influence of preparation method on activity and stability of Ni catalysts supported on Gd doped ceria in dry reforming of methane // J. of CO2 utilization. 2017. V. 20. P. 357–367. https://doi.org/10.1016/j.jcou.2017.06.014.

DOI: 10.1016/j.jcou.2017.06.014

Google Scholar

[3] Zhang Z., Avdeev M., Reyes M., Lumpkin G.R., Kennedy B.J., Blanchard P.E.R., Liu S., Tadich A., Cowie B.C.C. Probing Long- and Short-Range Disorder in Y2Ti2–xHfxO7 by Diffraction and Spectroscopy Techniques // J. Phys. Chem. 2016. V. 120. P. 26465 –26479. https://doi.org/10.1021/acs.jpcc.6b07076.

DOI: 10.1021/acs.jpcc.6b07076

Google Scholar

[4] Dubinin M.M. Chemistry and Physics of Carbon // Marcel Dekker. N.Y.–1966.- V. 2. – P. 51.

Google Scholar

[5] Vartapetyan R.Sh., Voloshchuk A.M., Dubinin M.M., Polyakov N.S., Serpinskii V.V. Adsorption of water vapor and the microporous structures of carbonaceous adsorbents. communication 4. adsorption isotherms of water vapor in the region of low relative pressures // Russian Chemical Bulletin. - 1982. - Т. 31. - № 6. - С. 1078-1080.

DOI: 10.1007/bf00955950

Google Scholar

[6] D. M. Ruthven, M. Hussain, and R. Desai, in Proceedings of the 4th International Conference on Fundamentals of Adsorption, Kyoto, May 17, 1992, Ed. by M. Suzuki (Kodansha, Tokyo, 1992), p.52.

Google Scholar