Surface Characteristics and Catalytic Oxidation of CO on Silicalites and Silicalites Containing Cobalt, Copper and Silver Oxides
Two silicalite samples, S 1 and S 2 , were prepared hydrothermally in the presence of tetrapropylammonium bromide (TPA–Br) and tetrabutylammonium bromide (TBA–Br), respectively. Cobalt oxide, copper oxide or silver oxide (all at 10 wt% concentration) were incorporated into the S 1 and S 2 silicalite...
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| Format: | Article |
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SAGE Publishing
2001-05-01
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| Series: | Adsorption Science & Technology |
| Online Access: | https://doi.org/10.1260/0263617011494178 |
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| author | Farid Sh. Mohamed |
| author_facet | Farid Sh. Mohamed |
| author_sort | Farid Sh. Mohamed |
| collection | DOAJ |
| description | Two silicalite samples, S 1 and S 2 , were prepared hydrothermally in the presence of tetrapropylammonium bromide (TPA–Br) and tetrabutylammonium bromide (TBA–Br), respectively. Cobalt oxide, copper oxide or silver oxide (all at 10 wt% concentration) were incorporated into the S 1 and S 2 silicalites by impregnation methods. The structural and textural properties of the prepared samples were studied using a variety of techniques together with their ability to catalyze the oxidation of CO. The results obtained indicated that S 1 and S 2 existed as pure phases with structures analogous to those of ZSM-5 and ZSM-11 zeolites, respectively. Electron microscopic analysis showed that the crystalline morphology of S 1 and S 2 consisted of intergrown discs and shelf-like shapes with diameters in the range 10–15 μm and 29–33 μm, respectively. Differences noted during kinetic studies of CO oxidation over the prepared samples were discussed. |
| format | Article |
| id | doaj-art-017d88f2263a41e590a6d8c0e272ef13 |
| institution | Kabale University |
| issn | 0263-6174 2048-4038 |
| language | English |
| publishDate | 2001-05-01 |
| publisher | SAGE Publishing |
| record_format | Article |
| series | Adsorption Science & Technology |
| spelling | doaj-art-017d88f2263a41e590a6d8c0e272ef132025-02-03T10:08:09ZengSAGE PublishingAdsorption Science & Technology0263-61742048-40382001-05-011910.1260/0263617011494178Surface Characteristics and Catalytic Oxidation of CO on Silicalites and Silicalites Containing Cobalt, Copper and Silver OxidesFarid Sh. MohamedTwo silicalite samples, S 1 and S 2 , were prepared hydrothermally in the presence of tetrapropylammonium bromide (TPA–Br) and tetrabutylammonium bromide (TBA–Br), respectively. Cobalt oxide, copper oxide or silver oxide (all at 10 wt% concentration) were incorporated into the S 1 and S 2 silicalites by impregnation methods. The structural and textural properties of the prepared samples were studied using a variety of techniques together with their ability to catalyze the oxidation of CO. The results obtained indicated that S 1 and S 2 existed as pure phases with structures analogous to those of ZSM-5 and ZSM-11 zeolites, respectively. Electron microscopic analysis showed that the crystalline morphology of S 1 and S 2 consisted of intergrown discs and shelf-like shapes with diameters in the range 10–15 μm and 29–33 μm, respectively. Differences noted during kinetic studies of CO oxidation over the prepared samples were discussed.https://doi.org/10.1260/0263617011494178 |
| spellingShingle | Farid Sh. Mohamed Surface Characteristics and Catalytic Oxidation of CO on Silicalites and Silicalites Containing Cobalt, Copper and Silver Oxides Adsorption Science & Technology |
| title | Surface Characteristics and Catalytic Oxidation of CO on Silicalites and Silicalites Containing Cobalt, Copper and Silver Oxides |
| title_full | Surface Characteristics and Catalytic Oxidation of CO on Silicalites and Silicalites Containing Cobalt, Copper and Silver Oxides |
| title_fullStr | Surface Characteristics and Catalytic Oxidation of CO on Silicalites and Silicalites Containing Cobalt, Copper and Silver Oxides |
| title_full_unstemmed | Surface Characteristics and Catalytic Oxidation of CO on Silicalites and Silicalites Containing Cobalt, Copper and Silver Oxides |
| title_short | Surface Characteristics and Catalytic Oxidation of CO on Silicalites and Silicalites Containing Cobalt, Copper and Silver Oxides |
| title_sort | surface characteristics and catalytic oxidation of co on silicalites and silicalites containing cobalt copper and silver oxides |
| url | https://doi.org/10.1260/0263617011494178 |
| work_keys_str_mv | AT faridshmohamed surfacecharacteristicsandcatalyticoxidationofcoonsilicalitesandsilicalitescontainingcobaltcopperandsilveroxides |