H2O2-Based Allylic Oxidation of α-Pinene over Different Single Site Catalysts Full article
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Journal of Catalysis
ISSN: 0021-9517 , E-ISSN: 1090-2694 |
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| Output data | Year: 2005, Volume: 235, Number: 1, Pages: 175-183 Pages count : 9 DOI: 10.1016/j.jcat.2005.08.001 | ||||
| Tags | α-Pinene, Allylic oxidation, Hydrogen peroxide, Ti(IV), Zr(IV), 'Single site' catalysts, mesoporous catalysts, Verbenol, Verbenone | ||||
| Authors |
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| Affiliations |
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Funding (2)
| 1 | Civilian Research and Development Foundation | NO-008-X1 |
| 2 | Ministry of Science and Higher Education | 4 T09C 023 23 |
Abstract:
Catalytic properties of different solids, containing Ti(IV), Zr(IV), and Fe(III) isolated in inorganic matrixes, have been assessed in allylic oxidation of α-pinene with aqueous H2O2. Among the catalysts studied were mesostructured metal silicates Ti-MMM-2 and Fe-MMM-2, TiO2–SiO2 mixed oxides, Ti and Zr grafted on mesoporous silica cellular foams (Ti- and Zr-MCF), and a new composite material, H5PW11TiO40/silica, prepared by a sol–gel method. The catalysts were characterized by elemental analysis, N2 adsorption, and DRS-UV. The Ti- and Zr-containing materials showed catalytic properties superior to those of Fe-MMM-2. The reaction selectivity strongly depended on the solvent properties, substrate/oxidant molar ratio, reaction temperature, and α-pinene conversion. In optimized reaction conditions (MeCN, 30 °C), the total selectivity toward verbenol/verbenone reached the maximal value of 80–82% at 8–15% conversion. The H5PW11TiO40/silica catalyst can be used repeatedly without loss of activity and selectivity. No leaching of the active species occurs, and the oxidation is a true heterogeneous process operating via a radical nonchain mechanism.
Cite:
Maksimchuk N.V.
, Melgunov M.S.
, Mrowiec-Białoń J.
, Jarzębski A.B. A.
, Kholdeeva O.A.
H2O2-Based Allylic Oxidation of α-Pinene over Different Single Site Catalysts
Journal of Catalysis. 2005. V.235. N1. P.175-183. DOI: 10.1016/j.jcat.2005.08.001 WOS Scopus РИНЦ ANCAN OpenAlex
H2O2-Based Allylic Oxidation of α-Pinene over Different Single Site Catalysts
Journal of Catalysis. 2005. V.235. N1. P.175-183. DOI: 10.1016/j.jcat.2005.08.001 WOS Scopus РИНЦ ANCAN OpenAlex
Dates:
| Submitted: | Jul 8, 2005 |
| Accepted: | Aug 4, 2005 |
| Published online: | Sep 1, 2005 |
| Published print: | Oct 1, 2005 |
Identifiers:
| Web of science: | WOS:000232147500017 |
| Scopus: | 2-s2.0-24944505118 |
| Elibrary: | 13499316 |
| Chemical Abstracts: | 2005:1009253 |
| Chemical Abstracts (print): | 143:440568 |
| OpenAlex: | W1981673835 |