| Full text | |
| Author(s): |
Santos, Wagner C. C.
[1]
;
Dias, Kevin A.
[1]
;
Santos, Leidaiany P.
[1]
;
Kisukuri, Camila M.
[1]
;
Rodrigues, Thenner S.
[1]
;
Geonmonond, Rafael S.
[1]
;
Camargo, Pedro H. C.
[1]
;
Andrade, Leandro H.
[1]
Total Authors: 8
|
| Affiliation: | [1] Univ Sao Paulo, Inst Chem, Ave Prof Lineu Prestes 748, BR-05508000 Sao Paulo, SP - Brazil
Total Affiliations: 1
|
| Document type: | Journal article |
| Source: | ADVANCED SYNTHESIS & CATALYSIS; v. 360, n. 7, p. 1376-1383, APR 3 2018. |
| Web of Science Citations: | 3 |
| Abstract | |
Applications of gold and selenium chemistry are reported as novel approaches to promote lignin depolymerization into more valuable chemicals via selective oxidation reactions (alcohol oxidations and Baeyer-Villiger reactions). In this study, we proposed two different oxidative methodologies using Au/SiO2 and phenylseleninic acid resin (PAR) as stable and reusable catalysts to promote selective transformations of the -O-4 linkage of lignin model compounds. After evaluating the catalytic systems under batch conditions, they were both applied in a packed-bed reactor for continuous flow operations. By using Au/SiO2 as a catalyst under flow conditions, ketones were efficiently obtained (up to 86% conversion) from the oxidation of alcohols with a residence time (t(R)) of 30min. In the case of Baeyer-Villiger oxidations catalyzed by phenylseleninic acid resin, the corresponding esters were obtained in up to 91% conversion (t(R)=30min). Both systems efficiently catalyzed the conversion of the lignin model compounds. (AU) | |
| FAPESP's process: | 15/21366-9 - HYBRID MATERIALS CONTAINING METAL NANOPARTICLES FOR CATALYTIC APPLICATIONS |
| Grantee: | Pedro Henrique Cury Camargo |
| Support Opportunities: | Regular Research Grants |
| FAPESP's process: | 14/22457-5 - Development of biocatalytic systems for oxidation and reduction reactions |
| Grantee: | Leandro Helgueira de Andrade |
| Support Opportunities: | Regular Research Grants |