Highly selective synthesis of trans-stilbene oxide over mesoporous Mn-MCM-41 and Zr-Mn-MCM-41 molecular sieves

M. Selvaraj, K. S. Seshadri, A. Pandurangan, Tai Gyu Lee

Research output: Contribution to journalArticle

28 Citations (Scopus)

Abstract

trans-Stilbene oxide have been synthesized under liquid phase reaction conditions using trans-stilbene in the presence of different oxidants and different solvents over synthesized and characterized Zr-Mn-MCM-41 and Mn-MCM-41 as catalysts. On increasing the Si/(Zr + Mn) ratios of Zr-Mn-MCM-41 and Si/Mn ratios of Mn-MCM-41 catalysts from 49 to 327 and 15 to 102, respectively, the conversion of trans-stilbene, yield and selectivity of trans-stilbene oxide decreased. This may be due to the number of Lewis acid sites in Zr-Mn-MCM-41 and Mn-MCM-41 are found to decrease almost linearly with increasing ratios of Si/(Zr + Mn) and Si/Mn, respectively. Both the Zr-Mn-MCM-41(49) and Mn-MCM-41(31) possesses stronger affinity with trans-stilbene and TBHP, but, the conversion of trans-stilbene, yield and selectivity of trans-stilbene oxide decreased in only recyclable Mn-MCM-41. This may be due to decreasing the catalytic activity on the surface of catalysts. In the context, the Si/(Zr + Mn) ratio of 49 is found to be more suitable for the epoxidation of trans-stilbene to highly selective synthesis of trans-stilbene oxide. Thus the yield (76.3%) and selectivity of trans-stilbene oxide (84.58%) are higher in Zr-Mn-MCM-41(49) than that in other Zr-Mn-MCM-41 and Mn-MCM-41 catalysts.

Original languageEnglish
Pages (from-to)261-268
Number of pages8
JournalMicroporous and Mesoporous Materials
Volume79
Issue number1-3
DOIs
Publication statusPublished - 2005 Apr 1

Fingerprint

stilbene
Molecular sieves
Multicarrier modulation
absorbents
Oxides
oxides
Stilbenes
synthesis
catalysts
selectivity
Catalysts
stilbene oxide
MCM-41
epoxidation
Lewis Acids
Epoxidation
affinity
catalytic activity
Oxidants
liquid phases

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials

Cite this

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title = "Highly selective synthesis of trans-stilbene oxide over mesoporous Mn-MCM-41 and Zr-Mn-MCM-41 molecular sieves",
abstract = "trans-Stilbene oxide have been synthesized under liquid phase reaction conditions using trans-stilbene in the presence of different oxidants and different solvents over synthesized and characterized Zr-Mn-MCM-41 and Mn-MCM-41 as catalysts. On increasing the Si/(Zr + Mn) ratios of Zr-Mn-MCM-41 and Si/Mn ratios of Mn-MCM-41 catalysts from 49 to 327 and 15 to 102, respectively, the conversion of trans-stilbene, yield and selectivity of trans-stilbene oxide decreased. This may be due to the number of Lewis acid sites in Zr-Mn-MCM-41 and Mn-MCM-41 are found to decrease almost linearly with increasing ratios of Si/(Zr + Mn) and Si/Mn, respectively. Both the Zr-Mn-MCM-41(49) and Mn-MCM-41(31) possesses stronger affinity with trans-stilbene and TBHP, but, the conversion of trans-stilbene, yield and selectivity of trans-stilbene oxide decreased in only recyclable Mn-MCM-41. This may be due to decreasing the catalytic activity on the surface of catalysts. In the context, the Si/(Zr + Mn) ratio of 49 is found to be more suitable for the epoxidation of trans-stilbene to highly selective synthesis of trans-stilbene oxide. Thus the yield (76.3{\%}) and selectivity of trans-stilbene oxide (84.58{\%}) are higher in Zr-Mn-MCM-41(49) than that in other Zr-Mn-MCM-41 and Mn-MCM-41 catalysts.",
author = "M. Selvaraj and Seshadri, {K. S.} and A. Pandurangan and Lee, {Tai Gyu}",
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Highly selective synthesis of trans-stilbene oxide over mesoporous Mn-MCM-41 and Zr-Mn-MCM-41 molecular sieves. / Selvaraj, M.; Seshadri, K. S.; Pandurangan, A.; Lee, Tai Gyu.

In: Microporous and Mesoporous Materials, Vol. 79, No. 1-3, 01.04.2005, p. 261-268.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Highly selective synthesis of trans-stilbene oxide over mesoporous Mn-MCM-41 and Zr-Mn-MCM-41 molecular sieves

AU - Selvaraj, M.

AU - Seshadri, K. S.

AU - Pandurangan, A.

AU - Lee, Tai Gyu

PY - 2005/4/1

Y1 - 2005/4/1

N2 - trans-Stilbene oxide have been synthesized under liquid phase reaction conditions using trans-stilbene in the presence of different oxidants and different solvents over synthesized and characterized Zr-Mn-MCM-41 and Mn-MCM-41 as catalysts. On increasing the Si/(Zr + Mn) ratios of Zr-Mn-MCM-41 and Si/Mn ratios of Mn-MCM-41 catalysts from 49 to 327 and 15 to 102, respectively, the conversion of trans-stilbene, yield and selectivity of trans-stilbene oxide decreased. This may be due to the number of Lewis acid sites in Zr-Mn-MCM-41 and Mn-MCM-41 are found to decrease almost linearly with increasing ratios of Si/(Zr + Mn) and Si/Mn, respectively. Both the Zr-Mn-MCM-41(49) and Mn-MCM-41(31) possesses stronger affinity with trans-stilbene and TBHP, but, the conversion of trans-stilbene, yield and selectivity of trans-stilbene oxide decreased in only recyclable Mn-MCM-41. This may be due to decreasing the catalytic activity on the surface of catalysts. In the context, the Si/(Zr + Mn) ratio of 49 is found to be more suitable for the epoxidation of trans-stilbene to highly selective synthesis of trans-stilbene oxide. Thus the yield (76.3%) and selectivity of trans-stilbene oxide (84.58%) are higher in Zr-Mn-MCM-41(49) than that in other Zr-Mn-MCM-41 and Mn-MCM-41 catalysts.

AB - trans-Stilbene oxide have been synthesized under liquid phase reaction conditions using trans-stilbene in the presence of different oxidants and different solvents over synthesized and characterized Zr-Mn-MCM-41 and Mn-MCM-41 as catalysts. On increasing the Si/(Zr + Mn) ratios of Zr-Mn-MCM-41 and Si/Mn ratios of Mn-MCM-41 catalysts from 49 to 327 and 15 to 102, respectively, the conversion of trans-stilbene, yield and selectivity of trans-stilbene oxide decreased. This may be due to the number of Lewis acid sites in Zr-Mn-MCM-41 and Mn-MCM-41 are found to decrease almost linearly with increasing ratios of Si/(Zr + Mn) and Si/Mn, respectively. Both the Zr-Mn-MCM-41(49) and Mn-MCM-41(31) possesses stronger affinity with trans-stilbene and TBHP, but, the conversion of trans-stilbene, yield and selectivity of trans-stilbene oxide decreased in only recyclable Mn-MCM-41. This may be due to decreasing the catalytic activity on the surface of catalysts. In the context, the Si/(Zr + Mn) ratio of 49 is found to be more suitable for the epoxidation of trans-stilbene to highly selective synthesis of trans-stilbene oxide. Thus the yield (76.3%) and selectivity of trans-stilbene oxide (84.58%) are higher in Zr-Mn-MCM-41(49) than that in other Zr-Mn-MCM-41 and Mn-MCM-41 catalysts.

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JF - Microporous and Mesoporous Materials

SN - 1387-1811

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