Porous Silicas and Respective Carbon Replicates for Adsorption and Catalysis
A recent pathway for obtaining regular mesoporous materials (silicas and carbons) in one step was explored in this work using TEOS, P123 and sucrose as a starting base template. The synthesis was catalyzed by H 2 SO 4 . The mesoporous carbon was obtained by carbonization of the previous mixture and...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
SAGE Publishing
2010-11-01
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| Series: | Adsorption Science & Technology |
| Online Access: | https://doi.org/10.1260/0263-6174.28.8-9.717 |
| Summary: | A recent pathway for obtaining regular mesoporous materials (silicas and carbons) in one step was explored in this work using TEOS, P123 and sucrose as a starting base template. The synthesis was catalyzed by H 2 SO 4 . The mesoporous carbon was obtained by carbonization of the previous mixture and the removal of the silica template. In contrast, when the composite mixture was heated in air, a mesoporous silica was obtained. The results showed that the “one-pot” method presented some difficulties in controlling the synthesis variables. All the silica samples presented a more regular pore-size distribution than the respective carbon replicate. The specific surface areas (A BET ) of the prepared materials were in the range 500–600 m 2 /g for the silica samples and within the range 1000–1200 m 2 /g for the carbon samples. |
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| ISSN: | 0263-6174 2048-4038 |