The effects of particle size on the performance of Er2O3 and 30 mol% BaCl2/Er2O3 catalysts in the selective oxidation of ethane to ethylene

W. Zhong; H. X. Dai; C. F. Ng; C. T. Au

doi:10.1016/s0167-2991(00)80454-1

The effects of particle size on the performance of Er₂O₃ and 30 mol% BaCl₂/Er₂O₃ catalysts in the selective oxidation of ethane to ethylene

W. Zhong^*, H. X. Dai, C. F. Ng, C. T. Au

^*Corresponding author for this work

Department of Chemistry

Research output: Chapter in book/report/conference proceeding › Conference proceeding › peer-review

3 Citations (Scopus)

Abstract

A comparison of the nanoscale Er₂O₃ and BaCl₂/Er₂O₃ catalysts prepared by sol-gel method with their large-size counterparts has been made for the oxidative dehydrogenation of ethane (ODE) to ethylene. The nanoscale catalysts showed better catalytic performance than the corresponding large-size ones. We detected that the extent of cubic Er₂O₃ lattice enlargement in nanoscale BaCl₂/Er₂O₃ was larger than that in the large-size one and more defects were generated in the nanoscale catalyst. TPR results indicated that compared to the large-size catalysts, there were more reducible oxygen adspecies present on the nanoscale ones. In situ Raman studies revealed that the reduction in particle size was beneficial for the activation of oxygen molecules. Based on the activity and Raman results, we suggest that dioxygen species are responsible for the selective oxidation of C₂H₆ to C₂H₄.

Original language	English
Title of host publication	Proceedings of 12th International Congress on Catalysis, ICC 2000
Publisher	Springer
Pages	1751-1756
Number of pages	6
Edition	1st
DOIs	https://doi.org/10.1016/s0167-2991(00)80454-1
Publication status	Published - Mar 2000
Event	12th International Congress on Catalysis, ICC 2000 - Granada, Spain Duration: 9 Jul 2000 → 14 Jul 2000 https://www.sciencedirect.com/bookseries/studies-in-surface-science-and-catalysis/vol/130/suppl/C

Publication series

Name	Studies in Surface Science and Catalysis
Publisher	Springer
Volume	130, Part B
ISSN (Print)	0167-2991

Congress

Congress	12th International Congress on Catalysis, ICC 2000
Country/Territory	Spain
City	Granada
Period	9/07/00 → 14/07/00
Internet address	https://www.sciencedirect.com/bookseries/studies-in-surface-science-and-catalysis/vol/130/suppl/C

Scopus Subject Areas

Catalysis
Condensed Matter Physics
Physical and Theoretical Chemistry
Surfaces, Coatings and Films
Materials Chemistry

Access to Document

10.1016/s0167-2991(00)80454-1

Cite this

Zhong, W., Dai, H. X., Ng, C. F., & Au, C. T. (2000). The effects of particle size on the performance of Er₂O₃ and 30 mol% BaCl₂/Er₂O₃ catalysts in the selective oxidation of ethane to ethylene. In Proceedings of 12th International Congress on Catalysis, ICC 2000 (1st ed., pp. 1751-1756). (Studies in Surface Science and Catalysis; Vol. 130, Part B). Springer. https://doi.org/10.1016/s0167-2991(00)80454-1

@inproceedings{a972cb5845dd41709c24334d3f4c43bd,

title = "The effects of particle size on the performance of Er2O3 and 30 mol% BaCl2/Er2O3 catalysts in the selective oxidation of ethane to ethylene",

abstract = "A comparison of the nanoscale Er2O3 and BaCl2/Er2O3 catalysts prepared by sol-gel method with their large-size counterparts has been made for the oxidative dehydrogenation of ethane (ODE) to ethylene. The nanoscale catalysts showed better catalytic performance than the corresponding large-size ones. We detected that the extent of cubic Er2O3 lattice enlargement in nanoscale BaCl2/Er2O3 was larger than that in the large-size one and more defects were generated in the nanoscale catalyst. TPR results indicated that compared to the large-size catalysts, there were more reducible oxygen adspecies present on the nanoscale ones. In situ Raman studies revealed that the reduction in particle size was beneficial for the activation of oxygen molecules. Based on the activity and Raman results, we suggest that dioxygen species are responsible for the selective oxidation of C2H6 to C2H4.",

author = "W. Zhong and Dai, {H. X.} and Ng, {C. F.} and Au, {C. T.}",

note = "Funding Information: The work described above was fully supported by a grant from the Hong Kong Baptist University (FRG/97-98/II-04). HXD thanks the HKBU for a Ph.D. studentship.; 12th International Congress on Catalysis, ICC 2000 ; Conference date: 09-07-2000 Through 14-07-2000",

year = "2000",

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doi = "10.1016/s0167-2991(00)80454-1",

language = "English",

series = "Studies in Surface Science and Catalysis",

publisher = "Springer",

pages = "1751--1756",

booktitle = "Proceedings of 12th International Congress on Catalysis, ICC 2000",

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Zhong, W, Dai, HX, Ng, CF & Au, CT 2000, The effects of particle size on the performance of Er₂O₃ and 30 mol% BaCl₂/Er₂O₃ catalysts in the selective oxidation of ethane to ethylene. in Proceedings of 12th International Congress on Catalysis, ICC 2000. 1st edn, Studies in Surface Science and Catalysis, vol. 130, Part B, Springer, pp. 1751-1756, 12th International Congress on Catalysis, ICC 2000, Granada, Spain, 9/07/00. https://doi.org/10.1016/s0167-2991(00)80454-1

The effects of particle size on the performance of Er₂O₃ and 30 mol% BaCl₂/Er₂O₃ catalysts in the selective oxidation of ethane to ethylene. / Zhong, W.; Dai, H. X.; Ng, C. F. et al.
Proceedings of 12th International Congress on Catalysis, ICC 2000. 1st. ed. Springer, 2000. p. 1751-1756 (Studies in Surface Science and Catalysis; Vol. 130, Part B).

Research output: Chapter in book/report/conference proceeding › Conference proceeding › peer-review

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AU - Au, C. T.

N1 - Funding Information: The work described above was fully supported by a grant from the Hong Kong Baptist University (FRG/97-98/II-04). HXD thanks the HKBU for a Ph.D. studentship.

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N2 - A comparison of the nanoscale Er2O3 and BaCl2/Er2O3 catalysts prepared by sol-gel method with their large-size counterparts has been made for the oxidative dehydrogenation of ethane (ODE) to ethylene. The nanoscale catalysts showed better catalytic performance than the corresponding large-size ones. We detected that the extent of cubic Er2O3 lattice enlargement in nanoscale BaCl2/Er2O3 was larger than that in the large-size one and more defects were generated in the nanoscale catalyst. TPR results indicated that compared to the large-size catalysts, there were more reducible oxygen adspecies present on the nanoscale ones. In situ Raman studies revealed that the reduction in particle size was beneficial for the activation of oxygen molecules. Based on the activity and Raman results, we suggest that dioxygen species are responsible for the selective oxidation of C2H6 to C2H4.

AB - A comparison of the nanoscale Er2O3 and BaCl2/Er2O3 catalysts prepared by sol-gel method with their large-size counterparts has been made for the oxidative dehydrogenation of ethane (ODE) to ethylene. The nanoscale catalysts showed better catalytic performance than the corresponding large-size ones. We detected that the extent of cubic Er2O3 lattice enlargement in nanoscale BaCl2/Er2O3 was larger than that in the large-size one and more defects were generated in the nanoscale catalyst. TPR results indicated that compared to the large-size catalysts, there were more reducible oxygen adspecies present on the nanoscale ones. In situ Raman studies revealed that the reduction in particle size was beneficial for the activation of oxygen molecules. Based on the activity and Raman results, we suggest that dioxygen species are responsible for the selective oxidation of C2H6 to C2H4.

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