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- Title
Decomposition of cyclohexyl hydroperoxide over bimetallic mesoporous materials containing cobalt and chromium.
- Authors
Li, Lixia; Wu, Zhaowei; Guo, Lulu; Yuan, Xia
- Abstract
Bimetallic mesoporous Co-Cr-TUD-1 and its counterparts Co-TUD-1 and Cr-TUD-1 were synthesized by a direct hydrothermal treatment (DHT) method with triethanolamine as a template. The products were characterized by many techniques. Results show that Co and Cr are incorporated into the framework of TUD-1. The catalytic behaviours of the samples were tested in decomposition of cyclohexyl hydroperoxide (CHHP). Co-Cr-TUD-1 (Si/(Co + Cr) = 25) shows the highest catalytic efficiency with a CHHP conversion of 96.9 % and total selectivity of cyclohexanone and cyclohexanol of 95.9 %, which outperforms Co-TUD-1 and Cr-TUD-1 and indicates a synergistic effect between Co and Cr in Co-Cr-TUD-1. The catalysts are mainly heterogeneous as shown in various experiments, while the catalytic performances of recovered catalysts declined modestly, indicating non-negligible amounts of Co and Cr are leached after some cycles.
- Subjects
CYCLOHEXYLAMINE; HYDROPEROXIDES; HYDROTHERMAL synthesis
- Publication
Canadian Journal of Chemical Engineering, 2016, Vol 94, Issue 10, p1987
- ISSN
0008-4034
- Publication type
Article
- DOI
10.1002/cjce.22563