Phosphotungstic acid impregnated niobium coated superparamagnetic iron oxide nanoparticles as recyclable catalyst for selective isomerization of terpenes

dc.contributor.authorNAME, L. L.
dc.contributor.authorTOMA, S. H.
dc.contributor.authorNOGUEIRA, H. P.
dc.contributor.authorLuis Humberto Avanzi
dc.contributor.authorPEREIRA, R. dos S.
dc.contributor.authorFERREIRA, P. L. F.
dc.contributor.authorARAKI, K.
dc.contributor.authorCELLA, R.
dc.contributor.authorTOYAMA, M. M.
dc.contributor.authorLatteshttp://lattes.cnpq.br/1916904792102470pt_BR
dc.contributor.authorOrcidhttps://orcid.org/0000-0002-2537-6181pt_BR
dc.contributor.authorOrcidhttps://orcid.org/0000-0002-2537-6181
dc.date.accessioned2022-03-07T18:17:59Z
dc.date.available2022-03-07T18:17:59Z
dc.date.issued2021-04-01
dc.description.abstractConversion efficiency as high as 80–100% and 50% selectivity for camphene and limonene was achieved with low production of polymeric byproducts (18–28%), easy recovery with a magnet and reuse for up to five cycles maintaining similar activity and distribution of products, using a new magnetically recyclable catalyst based on niobium oxide coated on superparamagnetic iron oxide nanoparticles (SPION) impregnated with phosphotungstic acid (HPW). The catalyst was demonstrated to be effective in the selective conversion of alpha and beta-pinenes into valuable terpenes, under ultrasonic probe activation and with toluene as solvent. A unique synergic effect between the components generating more active and selective catalytic sites was demonstrated, indicating that the SPION covered with 30 wt% of Nb2O5 gives the best performance when impregnated with HPW as co-catalyst. The materials were fully characterized by XRD, EDX, XPS, TEM, BET, VSM and FTIRpt_BR
dc.format.extentRSC Advances, 2021, 11, 14203-14212pt_BR
dc.identifier.citationNAME, L. L.; TOMA, S. H.; NOGUEIRA, H. P.; AVANZI, L. H.; PEREIRA, R. dos S.; FERREIRA, P. L. F.; ARAKI, K.; CELLA, R.; TOYAMA, M. M. Phosphotungstic acid impregnated niobium coated superparamagnetic iron oxide nanoparticles as recyclable catalyst for selective isomerization of terpenes. RSC Advances, 2021.
dc.identifier.urihttps://repositorio.fei.edu.br/handle/FEI/4432
dc.language.isoenpt_BR
dc.rightsAbertopt_BR
dc.subjectSPIONSpt_BR
dc.subjectPhosphotungstic acidpt_BR
dc.titlePhosphotungstic acid impregnated niobium coated superparamagnetic iron oxide nanoparticles as recyclable catalyst for selective isomerization of terpenespt_BR
dc.typeArtigopt_BR
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