The oxidation of styrene by chromium–silica heterogeneous catalyst prepared from rice husk
Chromium was incorporated into the silica matrix extracted from rice husk in basic, neutral and acidic medium. The prepared catalysts were labeled as RHCr-10, RHCr-7 and RHCr-3 according to their pH. The specific surface area of RHCr-10, RHCr-7 and RHCr-3 was determined to be 144, 143 and 564 m2 g−1...
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| Format: | Article |
| Language: | English |
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Elsevier
2010
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| Online Access: | http://irep.iium.edu.my/22278/ http://irep.iium.edu.my/22278/1/Chemical_Engineering_Journal_160_%282010%29_742%E2%80%93750.pdf |
| _version_ | 1848778984364441600 |
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| author | Adam, Farook Mohamed Iqbal, Mohammad Anwar |
| author_facet | Adam, Farook Mohamed Iqbal, Mohammad Anwar |
| author_sort | Adam, Farook |
| building | IIUM Repository |
| collection | Online Access |
| description | Chromium was incorporated into the silica matrix extracted from rice husk in basic, neutral and acidic medium. The prepared catalysts were labeled as RHCr-10, RHCr-7 and RHCr-3 according to their pH. The specific surface area of RHCr-10, RHCr-7 and RHCr-3 was determined to be 144, 143 and 564 m2 g−1, respectively. The XRD results showed the catalysts to be amorphous. RHCr-3 showed better catalytic activity with 99.92% conversion of styrene. Benzaldehyde was the major product with styrene oxide, phenyl acetaldehyde, acetophenone, 1-phenylethanol, phenylglyoxal, styrene glycol and benzoic acid as by-products. Leaching of chromium was minimal and RHCr-3 could be recycled several times. |
| first_indexed | 2025-11-14T15:10:34Z |
| format | Article |
| id | iium-22278 |
| institution | International Islamic University Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-14T15:10:34Z |
| publishDate | 2010 |
| publisher | Elsevier |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | iium-222782012-05-17T04:08:53Z http://irep.iium.edu.my/22278/ The oxidation of styrene by chromium–silica heterogeneous catalyst prepared from rice husk Adam, Farook Mohamed Iqbal, Mohammad Anwar QD Chemistry Chromium was incorporated into the silica matrix extracted from rice husk in basic, neutral and acidic medium. The prepared catalysts were labeled as RHCr-10, RHCr-7 and RHCr-3 according to their pH. The specific surface area of RHCr-10, RHCr-7 and RHCr-3 was determined to be 144, 143 and 564 m2 g−1, respectively. The XRD results showed the catalysts to be amorphous. RHCr-3 showed better catalytic activity with 99.92% conversion of styrene. Benzaldehyde was the major product with styrene oxide, phenyl acetaldehyde, acetophenone, 1-phenylethanol, phenylglyoxal, styrene glycol and benzoic acid as by-products. Leaching of chromium was minimal and RHCr-3 could be recycled several times. Elsevier 2010-04-01 Article PeerReviewed application/pdf en http://irep.iium.edu.my/22278/1/Chemical_Engineering_Journal_160_%282010%29_742%E2%80%93750.pdf Adam, Farook and Mohamed Iqbal, Mohammad Anwar (2010) The oxidation of styrene by chromium–silica heterogeneous catalyst prepared from rice husk. Chemical Engineering Journal, 160 (2). pp. 742-750. ISSN 1385-8947/$ http://www.sciencedirect.com/science/article/pii/S1385894710003293 http://dx.doi.org/10.1016/j.cej.2010.04.003 |
| spellingShingle | QD Chemistry Adam, Farook Mohamed Iqbal, Mohammad Anwar The oxidation of styrene by chromium–silica heterogeneous catalyst prepared from rice husk |
| title | The oxidation of styrene by chromium–silica heterogeneous catalyst prepared from rice husk |
| title_full | The oxidation of styrene by chromium–silica heterogeneous catalyst prepared from rice husk |
| title_fullStr | The oxidation of styrene by chromium–silica heterogeneous catalyst prepared from rice husk |
| title_full_unstemmed | The oxidation of styrene by chromium–silica heterogeneous catalyst prepared from rice husk |
| title_short | The oxidation of styrene by chromium–silica heterogeneous catalyst prepared from rice husk |
| title_sort | oxidation of styrene by chromium–silica heterogeneous catalyst prepared from rice husk |
| topic | QD Chemistry |
| url | http://irep.iium.edu.my/22278/ http://irep.iium.edu.my/22278/ http://irep.iium.edu.my/22278/ http://irep.iium.edu.my/22278/1/Chemical_Engineering_Journal_160_%282010%29_742%E2%80%93750.pdf |