Monolayer dispersion of oxide additives on SnO2 and their promoting effects on thermal stability of SnO2 ultrafine particles
Source abstract
Abstract
The dispersion behavior of some oxides on the surface of SnO2 and the effects on the thermal stability of SnO2 have been studied. The results show that many oxides such as NiO, CuO, ZnO, Bi2O3, MoO3, Cr2O3 and Sb2O3 can disperse onto the surface of SnO2 by impregnation method or dry method—mixing a compound with the support thoroughly, followed by calcination at an appropriate temperature. The utmost dispersion capacities of these oxides on the surface of SnO2 are measured and they are all in good agreement with those estimated by a close-packed monolayer model. These oxides dispersed on the surface of SnO2 can retard the decrease in the specific surface areas of the samples and the increase in the crystallite size of SnO2 during calcination. In numerous effect factors, the surface coverage is a key factor. It is easy to stabilize the size of SnO2 grains to be 6 nm by this means, and the higher the valence of the cation of oxide, the stronger the stabilizing effects.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Gas Sensing Nanomaterials and Sensors · Catalytic Processes in Materials Science · Industrial Gas Emission Control
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (20)
Show source-provided references
1. K. D. Schierbaum, U. Weimar and W. Gopel, Sensors and Actuators B2 (1990) 71.10.1016/0925-4005(90)80011-N ↗
2. G. Wolfgang and D. S. Klaus, ibid. B26-27 (1995) 1.
3. M. Labeau and U. Schmatz, ibid. B26-27 (1995) 49.10.1016/0925-4005(94)01554-U ↗
4. K. D. Schierbaum, U. Weimar and W. Gopel, ibid. B7 (1992) 709.10.1016/0925-4005(92)80390-J ↗
5. F. Lu and S. Y. Chen, Petrochemical Technology 23(9) (1994) 617 (Chin. Ed.).
6. A. Dieguez, Sensors and Actuators B31 (1996) 1.
7. C. Xu, J. Tamaki, N. Miura and N. Yamazoe, Chemistry Letters (1990) 441.10.1246/cl.1990.441 ↗
8. N. Yamazoe, Y. Kurekawa and T. Seiyama, Sensors and Actuators 4 (1983) 283.10.1016/0250-6874(83)85034-3 ↗
9. H. W. Cheong, J. J. Choi, H. P. Kim, J. M. Kim, J. Kim and G. S. Churn, ibid. B9 (1992) 227.10.1016/0925-4005(92)80221-I ↗
10. C. Xu, J. Tamaki, N. Miura and N. Yamazoe, ibid. B3 (1991) 147.10.1016/0925-4005(91)80207-Z ↗
11. J. Tamaki, N. Miura and N. Yamazoe Idem., J. Mater. Sci. Lett. 8 (1989) 1092.10.1007/BF01730498 ↗
12. Y. C. Xie and Y. Q. Tang, Advances in Catalysis 37 (1990) 1.
13. Y. C. Xie, Y. X. Zhu, B. Y. Zhao and Y. Q. Tang, in “Preparation of Catalysts VII,” edited by B. Delmon (Elsevier Science B.V.; 1998) p. 441.10.1016/S0167-2991(98)80210-3 ↗
14. Y. Chen and L. Dong, in “Studies in Surface Science and Catalysis,” edited by J. W. Hightower and W. N. Delgass, 101 (Elsevier, 1996) 1293.10.1016/S0167-2991(96)80341-7 ↗
15. B. Y. Zhao, X. P. Xu, H. R. Ma, J. M. Gao, R. Q. Wany, D. H. Sun and Y. Q. Tang, Acta Physico-Chimica Sinica 9 (1993) 8.10.3866/PKU.WHXB19930103 ↗
16. Y. C. Xie, M. X. Qian and Y. Q. Tang, Sci. Sin (B) 9 (1983) 788 (Chin. Ed).
17. L. L. Gui, Y. J. Liu, X. L. Guo, H. Z. Huang and Y. Q. Tang, ibid. 6 (1985) 509 (Chin. Ed).
18. D. Wang, H. X. Sang, L. Ma and S. Q. Wang, Chinese Journal of Catalysis 10 (1989) 251.
19. B. Y. Zhao, X. P. Xu, H. R. Ma, J. M. Gao, R. Q. Wang and D. H. Sun, Catalysis Letters 45 (1997) 474.
20. A. Cimino, D. Cordischi, S. De. rossi, G. Ferraris, D. Goggoli, G. Minelli, M. Occhiuzzi and M. Valigi, J. Catal 127 (1991) 744.10.1016/0021-9517(91)90196-B ↗