Synthetic Niobium Oxyhydroxide as a Bifunctional Catalyst for Production of Ethers and Allyl Alcohol from Waste Glycerol
AUTOR(ES)
Oliveira, Henrique S., Resende, Jarbas M., Souza, Patterson P., Patrício, Patricia S. O., Oliveira, Luiz C. A.
FONTE
J. Braz. Chem. Soc.
DATA DE PUBLICAÇÃO
2017-11
RESUMO
A synthetic niobia was modified by treatment with hydrogen peroxide to be used as a catalyst for converting glycerol into petrochemical compounds. The catalytic properties of niobium oxyhydroxide were obtained by generating acidic and oxygenated groups (peroxo groups) on the solid surface. Compounds like ethers and allyl alcohol were obtained. A very active H2O2-modified catalyst showed high activity for the oxidation and dehydration of 91% of glycerol conversion using H2O2 and 46% of allyl alcohol selectivity in volatile phase. The product was analyzed by gas chromatography-mass spectrometry (GC-MS), thermogravimetry-mass spectrometry (TGA-MS) and nuclear magnetic ressonance (NMR). These results strongly suggest that the reactions involve acid and oxidizing species generated after the reaction of niobium with H2O2. 1H and 13C multidimensional NMR spectroscopy confirmed the results obtained with GC-MS and showed the production of several compounds after niobia treatment.
Documentos Relacionados
- Statistic evaluation of cysteine and allyl alcohol as additives for Cu-Zn coatings from citrate baths
- MECHANISM OF ALLYL ALCOHOL TOXICITY
- Niobium(V) chloride as catalyst in Diels-Alder reaction of furan ring
- The Antimicrobial Action of Certain Glycerol Ethers and Related Compounds
- Production of struvite from beverage waste as phosphorus source