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Synthesis and characterization of a new epoxidation catalyst by grafting cis-MoO2(salpr) complex to functionalized MCM-41

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Title: Synthesis and characterization of a new epoxidation catalyst by grafting cis-MoO2(salpr) complex to functionalized MCM-41
Authors: Masteri-Farahani, M.1, Farzaneh, F.2 faezeh_farzaneh@yahoo.com, Ghandi, M.1
Source: Journal of Molecular Catalysis A: Chemistry. Jan2006, Vol. 243 Issue 2, p170-175. 6p.
Subjects: Chromium group, Organic compounds, Molybdenum, Chemical engineering
Abstract: Abstract: The mesoporous molecular sieve MCM-41 was covalently grafted with 3-chloropropyl trimethoxylsilane and was then reacted with N,N′-bis(3-salicylidenaminopropyl)amine(salpr) to afford MCM-41 containing salpr ligand, salpr/Si-MCM-41. Powder X-ray diffraction and nitrogen adsorption–desorption analyses revealed that not only the textural characteristics of the support were preserved during the grafting experiments but also the channels remained accessible despite sequential reduction in surface area, pore volume and pore size. The salpr/Si-MCM-41 material was then reacted with MoO2(acac)2 to give MoO2(salpr)/Si-MCM-41 catalyst with molybdenum loading of 1.75wt.%. The molybdenum-containing MCM-41 was shown to successfully catalyze the epoxidation of 1-hexene, 1-octene, cyclohexene and cyclooctene with tert-butylhydroperoxide (TBHP) quantitatively with 95–99% selectivity toward the corresponding epoxides under mild conditions. [Copyright &y& Elsevier]
Copyright of Journal of Molecular Catalysis A: Chemistry 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
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Header DbId: egs
DbLabel: Engineering Source
An: 19202262
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
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  Data: Synthesis and characterization of a new epoxidation catalyst by grafting cis-MoO<subscript>2</subscript>(salpr) complex to functionalized MCM-41
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  Data: <searchLink fieldCode="JN" term="%22Journal+of+Molecular+Catalysis+A%3A+Chemistry%22">Journal of Molecular Catalysis A: Chemistry</searchLink>. Jan2006, Vol. 243 Issue 2, p170-175. 6p.
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  Data: <searchLink fieldCode="DE" term="%22Chromium+group%22">Chromium group</searchLink><br /><searchLink fieldCode="DE" term="%22Organic+compounds%22">Organic compounds</searchLink><br /><searchLink fieldCode="DE" term="%22Molybdenum%22">Molybdenum</searchLink><br /><searchLink fieldCode="DE" term="%22Chemical+engineering%22">Chemical engineering</searchLink>
– Name: Abstract
  Label: Abstract
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  Data: Abstract: The mesoporous molecular sieve MCM-41 was covalently grafted with 3-chloropropyl trimethoxylsilane and was then reacted with N,N′-bis(3-salicylidenaminopropyl)amine(salpr) to afford MCM-41 containing salpr ligand, salpr/Si-MCM-41. Powder X-ray diffraction and nitrogen adsorption–desorption analyses revealed that not only the textural characteristics of the support were preserved during the grafting experiments but also the channels remained accessible despite sequential reduction in surface area, pore volume and pore size. The salpr/Si-MCM-41 material was then reacted with MoO2(acac)2 to give MoO2(salpr)/Si-MCM-41 catalyst with molybdenum loading of 1.75wt.%. The molybdenum-containing MCM-41 was shown to successfully catalyze the epoxidation of 1-hexene, 1-octene, cyclohexene and cyclooctene with tert-butylhydroperoxide (TBHP) quantitatively with 95–99% selectivity toward the corresponding epoxides under mild conditions. [Copyright &y& Elsevier]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Journal of Molecular Catalysis A: Chemistry 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.)
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        Value: 10.1016/j.molcata.2005.08.013
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        Text: English
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        Type: general
      – SubjectFull: Organic compounds
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      – SubjectFull: Molybdenum
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      – TitleFull: Synthesis and characterization of a new epoxidation catalyst by grafting cis-MoO2(salpr) complex to functionalized MCM-41
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              Text: Jan2006
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              Y: 2006
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