Oxy-functionalization of olefins with neat and heterogenized binuclear V(IV)O and Fe(II) complexes: Effect of steric hindrance on product selectivity and output in homogeneous and heterogeneous phase.
Saved in:
| Title: | Oxy-functionalization of olefins with neat and heterogenized binuclear V(IV)O and Fe(II) complexes: Effect of steric hindrance on product selectivity and output in homogeneous and heterogeneous phase. |
|---|---|
| Authors: | Parmar, Digvijaysinh K.1 parmardk@outlook.com, Butani, Pinal M.2, Thumar, Niraj J.2, Jasani, Pinal M.2, Padaliya, Ravi V.2, Sandhiya, Paba R.2, Nakum, Haresh D.3, Khan, Md. Nasim4, Makwana, Dipak5 |
| Source: | Molecular Catalysis. Sep2019, Vol. 474, pN.PAG-N.PAG. 1p. |
| Subjects: | Alkenes, Zeolite Y, Steric hindrance, X-ray diffraction, Hydrogen peroxide |
| Abstract: | [Display omitted] • Binuclear complexes of V(IV)O and Fe(II) have been prepared and characterized by various Physico-chemical analysis. • Catalysts have efficiently catalyzed the oxidation of olefins. • Effect of steric hindrance on product selectivity has been studied. • Catalytic path for oxidation of cyclohexene has been proposed. • Recovered catalysts showed intact results up to two successive runs. Neat {[VO(sal 2 bz)] 2 ; [Fe(sal 2 bz)(H 2 O) 2 ] 2 ·2H 2 O} and zeolite-Y immobilized {[VO(sal 2 bz)] 2 -Y; [Fe(sal 2 bz)(H 2 O) 2 ] 2 -Y} binuclear complexes have been prepared and characterized by spectroscopic techniques (IR, UV–vis), elemental analyses (CHN, ICP-OES), thermal study (TGA), scanning electron micrograph (SEM), adsorption study (BET) and X-ray diffraction (XRD) patterns. Neat (homogeneous) and immobilized (heterogeneous) complexes were employed as catalysts in the oxidation of olefins, namely, cyclohexene, limonene and α-pinene in the presence of 30% hydrogen peroxide. 100% conversion of cyclohexene and α-pinene was obtained while limonene was oxidized up to 90%. Homogeneous catalysts showed highly selective result as neat [VO(sal 2 bz)] 2 complex has provided 87% cyclohexane-1,2-diol and neat [Fe(sal 2 bz)(H 2 O) 2 ] 2 ·2H 2 O complex has provided 79% verbenone in oxidation of cyclohexene and α-pinene, respectively. We have observed that due to steric hindrance, formation of olefinic oxidation products increases on moving from α-pinene to limonene and limonene to cyclohexene. Additionally. recovered heterogeneous catalysts showed intact results up to two consecutive runs. Probable catalytic mechanism has been proposed for oxidation of cyclohexene. [ABSTRACT FROM AUTHOR] |
| Copyright of Molecular Catalysis is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
| FullText | Text: Availability: 0 |
|---|---|
| Header | DbId: egs DbLabel: Engineering Source An: 162175657 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
| IllustrationInfo | |
| Items | – Name: Title Label: Title Group: Ti Data: Oxy-functionalization of olefins with neat and heterogenized binuclear V(IV)O and Fe(II) complexes: Effect of steric hindrance on product selectivity and output in homogeneous and heterogeneous phase. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Parmar%2C+Digvijaysinh+K%2E%22">Parmar, Digvijaysinh K.</searchLink><relatesTo>1</relatesTo><i> parmardk@outlook.com</i><br /><searchLink fieldCode="AR" term="%22Butani%2C+Pinal+M%2E%22">Butani, Pinal M.</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Thumar%2C+Niraj+J%2E%22">Thumar, Niraj J.</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Jasani%2C+Pinal+M%2E%22">Jasani, Pinal M.</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Padaliya%2C+Ravi+V%2E%22">Padaliya, Ravi V.</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Sandhiya%2C+Paba+R%2E%22">Sandhiya, Paba R.</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Nakum%2C+Haresh+D%2E%22">Nakum, Haresh D.</searchLink><relatesTo>3</relatesTo><br /><searchLink fieldCode="AR" term="%22Khan%2C+Md%2E+Nasim%22">Khan, Md. Nasim</searchLink><relatesTo>4</relatesTo><br /><searchLink fieldCode="AR" term="%22Makwana%2C+Dipak%22">Makwana, Dipak</searchLink><relatesTo>5</relatesTo> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Molecular+Catalysis%22">Molecular Catalysis</searchLink>. Sep2019, Vol. 474, pN.PAG-N.PAG. 1p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Alkenes%22">Alkenes</searchLink><br /><searchLink fieldCode="DE" term="%22Zeolite+Y%22">Zeolite Y</searchLink><br /><searchLink fieldCode="DE" term="%22Steric+hindrance%22">Steric hindrance</searchLink><br /><searchLink fieldCode="DE" term="%22X-ray+diffraction%22">X-ray diffraction</searchLink><br /><searchLink fieldCode="DE" term="%22Hydrogen+peroxide%22">Hydrogen peroxide</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: [Display omitted] • Binuclear complexes of V(IV)O and Fe(II) have been prepared and characterized by various Physico-chemical analysis. • Catalysts have efficiently catalyzed the oxidation of olefins. • Effect of steric hindrance on product selectivity has been studied. • Catalytic path for oxidation of cyclohexene has been proposed. • Recovered catalysts showed intact results up to two successive runs. Neat {[VO(sal 2 bz)] 2 ; [Fe(sal 2 bz)(H 2 O) 2 ] 2 ·2H 2 O} and zeolite-Y immobilized {[VO(sal 2 bz)] 2 -Y; [Fe(sal 2 bz)(H 2 O) 2 ] 2 -Y} binuclear complexes have been prepared and characterized by spectroscopic techniques (IR, UV–vis), elemental analyses (CHN, ICP-OES), thermal study (TGA), scanning electron micrograph (SEM), adsorption study (BET) and X-ray diffraction (XRD) patterns. Neat (homogeneous) and immobilized (heterogeneous) complexes were employed as catalysts in the oxidation of olefins, namely, cyclohexene, limonene and α-pinene in the presence of 30% hydrogen peroxide. 100% conversion of cyclohexene and α-pinene was obtained while limonene was oxidized up to 90%. Homogeneous catalysts showed highly selective result as neat [VO(sal 2 bz)] 2 complex has provided 87% cyclohexane-1,2-diol and neat [Fe(sal 2 bz)(H 2 O) 2 ] 2 ·2H 2 O complex has provided 79% verbenone in oxidation of cyclohexene and α-pinene, respectively. We have observed that due to steric hindrance, formation of olefinic oxidation products increases on moving from α-pinene to limonene and limonene to cyclohexene. Additionally. recovered heterogeneous catalysts showed intact results up to two consecutive runs. Probable catalytic mechanism has been proposed for oxidation of cyclohexene. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Molecular Catalysis is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
| PLink | https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=egs&AN=162175657 |
| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1016/j.mcat.2019.110424 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 1 StartPage: N.PAG Subjects: – SubjectFull: Alkenes Type: general – SubjectFull: Zeolite Y Type: general – SubjectFull: Steric hindrance Type: general – SubjectFull: X-ray diffraction Type: general – SubjectFull: Hydrogen peroxide Type: general Titles: – TitleFull: Oxy-functionalization of olefins with neat and heterogenized binuclear V(IV)O and Fe(II) complexes: Effect of steric hindrance on product selectivity and output in homogeneous and heterogeneous phase. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Parmar, Digvijaysinh K. – PersonEntity: Name: NameFull: Butani, Pinal M. – PersonEntity: Name: NameFull: Thumar, Niraj J. – PersonEntity: Name: NameFull: Jasani, Pinal M. – PersonEntity: Name: NameFull: Padaliya, Ravi V. – PersonEntity: Name: NameFull: Sandhiya, Paba R. – PersonEntity: Name: NameFull: Nakum, Haresh D. – PersonEntity: Name: NameFull: Khan, Md. Nasim – PersonEntity: Name: NameFull: Makwana, Dipak IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 09 Text: Sep2019 Type: published Y: 2019 Identifiers: – Type: issn-print Value: 24688231 Numbering: – Type: volume Value: 474 Titles: – TitleFull: Molecular Catalysis Type: main |
| ResultId | 1 |
