Dendrimeric silanes for formation of metallosilicates: New heterogeneous catalysts for the epoxidation of alkenes with tert-butylhydroperoxide

David Juwiler; Ronny Neumann

doi:10.1023/A:1009068728139

Dendrimeric silanes for formation of metallosilicates: New heterogeneous catalysts for the epoxidation of alkenes with tert-butylhydroperoxide

David Juwiler, Ronny Neumann^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

10 Scopus citations

Abstract

New metallosilicate catalysts were prepared by reacting a silanol capped dendrimer, Si[CH₂CH₂Si(CH₃)₂OH]₄ with MCp₂Cl₂ (M = Ti^IV, Mo^VI, W^VI and V^V). The resulting Si[CH₂CH₂Si(CH₃)₂OMCp ₂Cl]₄ compounds were incorporated in a silica matrix by the sol-gel method. The catalytic activity of the metallosilicates after calcination revealed excellent activity and selectivity towards epoxidation of alkenes with tert-butylhydroperoxide. Maximum activity was observed with molybdenum-containing materials. Analysis of the catalytic activity revealed that the catalysts were truly heterogeneous.

Original language	English
Pages (from-to)	241-243
Number of pages	3
Journal	Catalysis Letters
Volume	72
Issue number	3-4
DOIs	https://doi.org/10.1023/A:1009068728139
State	Published - Apr 2001
Externally published	Yes

Keywords

Dendrimer
Epoxidation
Metallosilicate

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title = "Dendrimeric silanes for formation of metallosilicates: New heterogeneous catalysts for the epoxidation of alkenes with tert-butylhydroperoxide",

abstract = "New metallosilicate catalysts were prepared by reacting a silanol capped dendrimer, Si[CH2CH2Si(CH3)2OH]4 with MCp2Cl2 (M = TiIV, MoVI, WVI and VV). The resulting Si[CH2CH2Si(CH3)2OMCp 2Cl]4 compounds were incorporated in a silica matrix by the sol-gel method. The catalytic activity of the metallosilicates after calcination revealed excellent activity and selectivity towards epoxidation of alkenes with tert-butylhydroperoxide. Maximum activity was observed with molybdenum-containing materials. Analysis of the catalytic activity revealed that the catalysts were truly heterogeneous.",

keywords = "Dendrimer, Epoxidation, Metallosilicate",

author = "David Juwiler and Ronny Neumann",

year = "2001",

month = apr,

doi = "10.1023/A:1009068728139",

language = "אנגלית",

volume = "72",

pages = "241--243",

journal = "Catalysis Letters",

issn = "1011-372X",

publisher = "Kluwer Academic Publishers",

number = "3-4",

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TY - JOUR

T1 - Dendrimeric silanes for formation of metallosilicates

T2 - New heterogeneous catalysts for the epoxidation of alkenes with tert-butylhydroperoxide

AU - Juwiler, David

AU - Neumann, Ronny

PY - 2001/4

Y1 - 2001/4

N2 - New metallosilicate catalysts were prepared by reacting a silanol capped dendrimer, Si[CH2CH2Si(CH3)2OH]4 with MCp2Cl2 (M = TiIV, MoVI, WVI and VV). The resulting Si[CH2CH2Si(CH3)2OMCp 2Cl]4 compounds were incorporated in a silica matrix by the sol-gel method. The catalytic activity of the metallosilicates after calcination revealed excellent activity and selectivity towards epoxidation of alkenes with tert-butylhydroperoxide. Maximum activity was observed with molybdenum-containing materials. Analysis of the catalytic activity revealed that the catalysts were truly heterogeneous.

AB - New metallosilicate catalysts were prepared by reacting a silanol capped dendrimer, Si[CH2CH2Si(CH3)2OH]4 with MCp2Cl2 (M = TiIV, MoVI, WVI and VV). The resulting Si[CH2CH2Si(CH3)2OMCp 2Cl]4 compounds were incorporated in a silica matrix by the sol-gel method. The catalytic activity of the metallosilicates after calcination revealed excellent activity and selectivity towards epoxidation of alkenes with tert-butylhydroperoxide. Maximum activity was observed with molybdenum-containing materials. Analysis of the catalytic activity revealed that the catalysts were truly heterogeneous.

KW - Dendrimer

KW - Epoxidation

KW - Metallosilicate

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AN - SCOPUS:0035323742

SN - 1011-372X

VL - 72

SP - 241

EP - 243

JO - Catalysis Letters

JF - Catalysis Letters

IS - 3-4

ER -

Dendrimeric silanes for formation of metallosilicates: New heterogeneous catalysts for the epoxidation of alkenes with tert-butylhydroperoxide

Abstract

Keywords

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