Supported nano-sized gold catalysts for selective reduction of 4,4'-dinitrostilbene-2,2'-disulfonic acid using different reductants
Gold nanoparticles supported on three metal oxides, TiO2, Al2O3 and Fe2O3, were prepared by a modified precipitation-deposition method using urea as an additive. These catalysts were tested in chemoselective reduction of 4,4’-dinitrostilbene-2,2’-disulfonic acid to 4,4’-diaminostilbene-2,2’-disulfon...
| Main Authors: | , , , , , |
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| Format: | Journal Article |
| Published: |
Elsevier
2012
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| Online Access: | http://hdl.handle.net/20.500.11937/25090 |
| _version_ | 1848751611443150848 |
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| author | Chen, Y. Peng, Wenchao. Wang, Shaobin Zhang, F. Zhang, G. Fan, X. |
| author_facet | Chen, Y. Peng, Wenchao. Wang, Shaobin Zhang, F. Zhang, G. Fan, X. |
| author_sort | Chen, Y. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | Gold nanoparticles supported on three metal oxides, TiO2, Al2O3 and Fe2O3, were prepared by a modified precipitation-deposition method using urea as an additive. These catalysts were tested in chemoselective reduction of 4,4’-dinitrostilbene-2,2’-disulfonic acid to 4,4’-diaminostilbene-2,2’-disulfonic acid. Three reagents, hydrogen, carbon monoxide, and sodium formate, were employed as reductants. It was found that >94% of the nitrostilbene was transformed into the aminostilbene without the reduction of olefinic group. In addition, these catalysts exhibited stable performance after regeneration by calcination at 400 °C for 5 h. This clean approach provides a promising application for synthesis of amino substituted stilbene sulfonic acid on an industrial scale. |
| first_indexed | 2025-11-14T07:55:29Z |
| format | Journal Article |
| id | curtin-20.500.11937-25090 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T07:55:29Z |
| publishDate | 2012 |
| publisher | Elsevier |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-250902017-09-13T15:19:08Z Supported nano-sized gold catalysts for selective reduction of 4,4'-dinitrostilbene-2,2'-disulfonic acid using different reductants Chen, Y. Peng, Wenchao. Wang, Shaobin Zhang, F. Zhang, G. Fan, X. Reduction Catalyst regeneration Chemoselective Heterogeneous catalysis Gold Supported catalysis Gold nanoparticles supported on three metal oxides, TiO2, Al2O3 and Fe2O3, were prepared by a modified precipitation-deposition method using urea as an additive. These catalysts were tested in chemoselective reduction of 4,4’-dinitrostilbene-2,2’-disulfonic acid to 4,4’-diaminostilbene-2,2’-disulfonic acid. Three reagents, hydrogen, carbon monoxide, and sodium formate, were employed as reductants. It was found that >94% of the nitrostilbene was transformed into the aminostilbene without the reduction of olefinic group. In addition, these catalysts exhibited stable performance after regeneration by calcination at 400 °C for 5 h. This clean approach provides a promising application for synthesis of amino substituted stilbene sulfonic acid on an industrial scale. 2012 Journal Article http://hdl.handle.net/20.500.11937/25090 10.1016/j.dyepig.2012.03.009 Elsevier restricted |
| spellingShingle | Reduction Catalyst regeneration Chemoselective Heterogeneous catalysis Gold Supported catalysis Chen, Y. Peng, Wenchao. Wang, Shaobin Zhang, F. Zhang, G. Fan, X. Supported nano-sized gold catalysts for selective reduction of 4,4'-dinitrostilbene-2,2'-disulfonic acid using different reductants |
| title | Supported nano-sized gold catalysts for selective reduction of 4,4'-dinitrostilbene-2,2'-disulfonic acid using different reductants |
| title_full | Supported nano-sized gold catalysts for selective reduction of 4,4'-dinitrostilbene-2,2'-disulfonic acid using different reductants |
| title_fullStr | Supported nano-sized gold catalysts for selective reduction of 4,4'-dinitrostilbene-2,2'-disulfonic acid using different reductants |
| title_full_unstemmed | Supported nano-sized gold catalysts for selective reduction of 4,4'-dinitrostilbene-2,2'-disulfonic acid using different reductants |
| title_short | Supported nano-sized gold catalysts for selective reduction of 4,4'-dinitrostilbene-2,2'-disulfonic acid using different reductants |
| title_sort | supported nano-sized gold catalysts for selective reduction of 4,4'-dinitrostilbene-2,2'-disulfonic acid using different reductants |
| topic | Reduction Catalyst regeneration Chemoselective Heterogeneous catalysis Gold Supported catalysis |
| url | http://hdl.handle.net/20.500.11937/25090 |