Promotional effect of bismuth as dopant in Bi-doped vanadyl pyrophosphate catalysts for selective oxidation of n-butane to maleic anhydride
Bismuth-promoted (1% and 3%) vanadyl pyrophosphate catalysts were prepared by refluxing Bi(NO3)3·5H2O and VOPO4·2H2O in isobutanol. The incorporation of Bi into the catalysts lattice increased the surface area and lowered the overall V oxidation state. Profiles of temperature programmed reduction (T...
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2006
|
| Online Access: | http://psasir.upm.edu.my/id/eprint/7916/1/Promotional%20effect%20of%20bismuth%20as%20dopant%20in%20Bi.pdf |
| _version_ | 1825944298832527360 |
|---|---|
| author | Yap, Taufiq Yun Hin Kamiya, Yuichi Tan, K. P. |
| author_facet | Yap, Taufiq Yun Hin Kamiya, Yuichi Tan, K. P. |
| author_sort | Yap, Taufiq Yun Hin |
| collection | UPM |
| description | Bismuth-promoted (1% and 3%) vanadyl pyrophosphate catalysts were prepared by refluxing Bi(NO3)3·5H2O and VOPO4·2H2O in isobutanol. The incorporation of Bi into the catalysts lattice increased the surface area and lowered the overall V oxidation state. Profiles of temperature programmed reduction (TPR) in H2 show a significant shift of the maxima of major reduction peaks to lower temperatures for the Bi-promoted catalysts. A new peak was also observed at the low temperature region for the catalyst with 3% of Bi dopant. The addition of Bi also increased the total amount of oxygen removed from the catalysts. The reduction pattern and reactivity information provide fundamental insight into the catalytic properties of the catalysts. Bi-promoted catalysts were found to be highly active (71% and 81% conversion for 1% and 3% Bi promoted catalysts, respectively, at 703 K), as compared to the unpromoted material (47% conversion). The higher activity of the Bi-promoted catalysts is due to that these catalysts possess highly active and labile lattice oxygen. The better catalytic performance can also be attributed to the larger surface area. |
| first_indexed | 2024-03-06T07:13:39Z |
| format | Article |
| id | upm.eprints-7916 |
| institution | Universiti Putra Malaysia |
| language | English |
| last_indexed | 2024-03-06T07:13:39Z |
| publishDate | 2006 |
| publisher | Elsevier |
| record_format | dspace |
| spelling | upm.eprints-79162016-11-25T01:40:36Z http://psasir.upm.edu.my/id/eprint/7916/ Promotional effect of bismuth as dopant in Bi-doped vanadyl pyrophosphate catalysts for selective oxidation of n-butane to maleic anhydride Yap, Taufiq Yun Hin Kamiya, Yuichi Tan, K. P. Bismuth-promoted (1% and 3%) vanadyl pyrophosphate catalysts were prepared by refluxing Bi(NO3)3·5H2O and VOPO4·2H2O in isobutanol. The incorporation of Bi into the catalysts lattice increased the surface area and lowered the overall V oxidation state. Profiles of temperature programmed reduction (TPR) in H2 show a significant shift of the maxima of major reduction peaks to lower temperatures for the Bi-promoted catalysts. A new peak was also observed at the low temperature region for the catalyst with 3% of Bi dopant. The addition of Bi also increased the total amount of oxygen removed from the catalysts. The reduction pattern and reactivity information provide fundamental insight into the catalytic properties of the catalysts. Bi-promoted catalysts were found to be highly active (71% and 81% conversion for 1% and 3% Bi promoted catalysts, respectively, at 703 K), as compared to the unpromoted material (47% conversion). The higher activity of the Bi-promoted catalysts is due to that these catalysts possess highly active and labile lattice oxygen. The better catalytic performance can also be attributed to the larger surface area. Elsevier 2006-12 Article PeerReviewed application/pdf en http://psasir.upm.edu.my/id/eprint/7916/1/Promotional%20effect%20of%20bismuth%20as%20dopant%20in%20Bi.pdf Yap, Taufiq Yun Hin and Kamiya, Yuichi and Tan, K. P. (2006) Promotional effect of bismuth as dopant in Bi-doped vanadyl pyrophosphate catalysts for selective oxidation of n-butane to maleic anhydride. Journal of Natural Gas Chemistry, 15 (4). pp. 297-302. ISSN 1003-9953 http://dx.doi.org/10.1016/S1003-9953(07)60009-7 10.1016/S1003-9953(07)60009-7 |
| spellingShingle | Yap, Taufiq Yun Hin Kamiya, Yuichi Tan, K. P. Promotional effect of bismuth as dopant in Bi-doped vanadyl pyrophosphate catalysts for selective oxidation of n-butane to maleic anhydride |
| title | Promotional effect of bismuth as dopant in Bi-doped vanadyl pyrophosphate catalysts for selective oxidation of n-butane to maleic anhydride |
| title_full | Promotional effect of bismuth as dopant in Bi-doped vanadyl pyrophosphate catalysts for selective oxidation of n-butane to maleic anhydride |
| title_fullStr | Promotional effect of bismuth as dopant in Bi-doped vanadyl pyrophosphate catalysts for selective oxidation of n-butane to maleic anhydride |
| title_full_unstemmed | Promotional effect of bismuth as dopant in Bi-doped vanadyl pyrophosphate catalysts for selective oxidation of n-butane to maleic anhydride |
| title_short | Promotional effect of bismuth as dopant in Bi-doped vanadyl pyrophosphate catalysts for selective oxidation of n-butane to maleic anhydride |
| title_sort | promotional effect of bismuth as dopant in bi doped vanadyl pyrophosphate catalysts for selective oxidation of n butane to maleic anhydride |
| url | http://psasir.upm.edu.my/id/eprint/7916/1/Promotional%20effect%20of%20bismuth%20as%20dopant%20in%20Bi.pdf |
| work_keys_str_mv | AT yaptaufiqyunhin promotionaleffectofbismuthasdopantinbidopedvanadylpyrophosphatecatalystsforselectiveoxidationofnbutanetomaleicanhydride AT kamiyayuichi promotionaleffectofbismuthasdopantinbidopedvanadylpyrophosphatecatalystsforselectiveoxidationofnbutanetomaleicanhydride AT tankp promotionaleffectofbismuthasdopantinbidopedvanadylpyrophosphatecatalystsforselectiveoxidationofnbutanetomaleicanhydride |