Aerosol route to nanostructured WO3-SiO2-Al2O3 metathesis catalysts: Toward higher propene yield. Debecker, D. P., Stoyanova, M., Rodemerck, U., Colbeau-Justin, F., Boissère, C., Chaumonnot, A., Bonduelle, A., & Sanchez, C. Applied Catalysis A: General, 470:458--466, January, 2014. ![Aerosol route to nanostructured WO3-SiO2-Al2O3 metathesis catalysts: Toward higher propene yield [link]](https://bibbase.org/img/filetypes/link.svg "link")
Paper doi abstract bibtex Aerosol processing is presented as a powerful new method to yield in one step highly efficient olefin metathesis catalysts. Combined with sol–gel chemistry, evaporation induced self-assembly and polyanions, it allows a fine tuning of the dispersion of WOx species and the generation of acidic matrices which are key parameters controlling the formation of active metathesis sites. These spray dried catalysts are characterized by N2-physisorption, XRD, TEM, NH3-TPD, TPO, TPR, ICP-AES and systematically compared to relevant reference catalysts prepared by impregnation methods on different carriers (silica, alumina and silica–alumina). Tested in the industrially relevant cross-metathesis of ethene and 2-butene to propene, the new catalyst outcompetes reference catalysts, reaching 68 mmolpropene g−1 h−1 at 250 °C. By-products formed by isomerization reactions remain very low and high propene yields (39%) are reached.
@article{ debecker_aerosol_2014,
title = {Aerosol route to nanostructured {WO}3-{SiO}2-{Al}2O3 metathesis catalysts: {Toward} higher propene yield},
volume = {470},
shorttitle = {Aerosol route to nanostructured {WO}3-{SiO}2-{Al}2O3 metathesis catalysts},
url = {http://www.sciencedirect.com/science/article/pii/S0926860X13003827},
doi = {10.1016/j.apcata.2013.06.041},
abstract = {Aerosol processing is presented as a powerful new method to yield in one step highly efficient olefin metathesis catalysts. Combined with sol–gel chemistry, evaporation induced self-assembly and polyanions, it allows a fine tuning of the dispersion of WOx species and the generation of acidic matrices which are key parameters controlling the formation of active metathesis sites. These spray dried catalysts are characterized by N2-physisorption, XRD, TEM, NH3-TPD, TPO, TPR, ICP-AES and systematically compared to relevant reference catalysts prepared by impregnation methods on different carriers (silica, alumina and silica–alumina). Tested in the industrially relevant cross-metathesis of ethene and 2-butene to propene, the new catalyst outcompetes reference catalysts, reaching 68 mmolpropene g−1 h−1 at 250 °C. By-products formed by isomerization reactions remain very low and high propene yields (39%) are reached.},
language = {en},
urldate = {2014-11-05},
journal = {Applied Catalysis A: General},
author = {Debecker, Damien P. and Stoyanova, Mariana and Rodemerck, Uwe and Colbeau-Justin, Frédéric and Boissère, Cédric and Chaumonnot, Alexandra and Bonduelle, Audrey and Sanchez, Clément},
month = {January},
year = {2014},
pages = {458--466},
file = {ScienceDirect Snapshot:C\:\\Users\̧onsultation\\AppData\\Roaming\\Mozilla\\Firefox\\Profiles\\1rk8mjlp.julien\\zotero\\storage\\IEZDAG92\\S0926860X13003827.html:text/html}
}
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These spray dried catalysts are characterized by N2-physisorption, XRD, TEM, NH3-TPD, TPO, TPR, ICP-AES and systematically compared to relevant reference catalysts prepared by impregnation methods on different carriers (silica, alumina and silica–alumina). Tested in the industrially relevant cross-metathesis of ethene and 2-butene to propene, the new catalyst outcompetes reference catalysts, reaching 68 mmolpropene g−1 h−1 at 250 °C. 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Combined with sol–gel chemistry, evaporation induced self-assembly and polyanions, it allows a fine tuning of the dispersion of WOx species and the generation of acidic matrices which are key parameters controlling the formation of active metathesis sites. These spray dried catalysts are characterized by N2-physisorption, XRD, TEM, NH3-TPD, TPO, TPR, ICP-AES and systematically compared to relevant reference catalysts prepared by impregnation methods on different carriers (silica, alumina and silica–alumina). Tested in the industrially relevant cross-metathesis of ethene and 2-butene to propene, the new catalyst outcompetes reference catalysts, reaching 68 mmolpropene g−1 h−1 at 250 °C. 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