STABLE SILICA-GRAFTED POLYMER-BOUND BULKY-PHOSPHITE MODIFIED RHODIUM HYDROFORMYLATION CATALYSTS

T JONGSMA; H VANAERT; M FOSSEN; G CHALLA; PWNM VANLEEUWEN

STABLE SILICA-GRAFTED POLYMER-BOUND BULKY-PHOSPHITE MODIFIED RHODIUM HYDROFORMYLATION CATALYSTS

T JONGSMA, H VANAERT, M FOSSEN, G CHALLA, PWNM VANLEEUWEN

Polymer Chemistry and Bioengineering

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

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Abstract

The present study demonstrates that silica-grafted polymer-bound phosphite modified rhodium complexes can be used in continuous flow reactors. The hydroformylation of styrene was carried out at moderate pressure (p(CO/H-2) = 30 bar) and temperature (T = 100-degrees-C), yielding constant conversions over a period of at least ten days. Leakage of rhodium is prevented totally and no decay in catalyst activity was observed. These positive results were obtained in benzene as a solvent and for a ligand to rhodium ratio of only 4. When toluene was used as solvent, considerable rhodium leaching was observed. This could be attributed to contraction of the grafted polymer coils in this solvent, leading to incomplete coordination of rhodium.

Original language	English
Pages (from-to)	37-50
Number of pages	14
Journal	Journal of Molecular Catalysis
Volume	83
Issue number	1-2
Publication status	Published - 14-Jul-1993

Keywords

HYDROFORMYLATION
PHOSPHITES
POLYMER-BOUND CATALYSTS
RHODIUM
CHEMISTRY

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@article{c1b13ec3901e441991861c308c396002,

title = "STABLE SILICA-GRAFTED POLYMER-BOUND BULKY-PHOSPHITE MODIFIED RHODIUM HYDROFORMYLATION CATALYSTS",

abstract = "The present study demonstrates that silica-grafted polymer-bound phosphite modified rhodium complexes can be used in continuous flow reactors. The hydroformylation of styrene was carried out at moderate pressure (p(CO/H-2) = 30 bar) and temperature (T = 100-degrees-C), yielding constant conversions over a period of at least ten days. Leakage of rhodium is prevented totally and no decay in catalyst activity was observed. These positive results were obtained in benzene as a solvent and for a ligand to rhodium ratio of only 4. When toluene was used as solvent, considerable rhodium leaching was observed. This could be attributed to contraction of the grafted polymer coils in this solvent, leading to incomplete coordination of rhodium.",

keywords = "HYDROFORMYLATION, PHOSPHITES, POLYMER-BOUND CATALYSTS, RHODIUM, CHEMISTRY",

author = "T JONGSMA and H VANAERT and M FOSSEN and G CHALLA and PWNM VANLEEUWEN",

year = "1993",

month = jul,

day = "14",

language = "English",

volume = "83",

pages = "37--50",

journal = "Journal of Molecular Catalysis",

issn = "0304-5102",

number = "1-2",

}

TY - JOUR

T1 - STABLE SILICA-GRAFTED POLYMER-BOUND BULKY-PHOSPHITE MODIFIED RHODIUM HYDROFORMYLATION CATALYSTS

AU - JONGSMA, T

AU - VANAERT, H

AU - FOSSEN, M

AU - CHALLA, G

AU - VANLEEUWEN, PWNM

PY - 1993/7/14

Y1 - 1993/7/14

N2 - The present study demonstrates that silica-grafted polymer-bound phosphite modified rhodium complexes can be used in continuous flow reactors. The hydroformylation of styrene was carried out at moderate pressure (p(CO/H-2) = 30 bar) and temperature (T = 100-degrees-C), yielding constant conversions over a period of at least ten days. Leakage of rhodium is prevented totally and no decay in catalyst activity was observed. These positive results were obtained in benzene as a solvent and for a ligand to rhodium ratio of only 4. When toluene was used as solvent, considerable rhodium leaching was observed. This could be attributed to contraction of the grafted polymer coils in this solvent, leading to incomplete coordination of rhodium.

AB - The present study demonstrates that silica-grafted polymer-bound phosphite modified rhodium complexes can be used in continuous flow reactors. The hydroformylation of styrene was carried out at moderate pressure (p(CO/H-2) = 30 bar) and temperature (T = 100-degrees-C), yielding constant conversions over a period of at least ten days. Leakage of rhodium is prevented totally and no decay in catalyst activity was observed. These positive results were obtained in benzene as a solvent and for a ligand to rhodium ratio of only 4. When toluene was used as solvent, considerable rhodium leaching was observed. This could be attributed to contraction of the grafted polymer coils in this solvent, leading to incomplete coordination of rhodium.

KW - HYDROFORMYLATION

KW - PHOSPHITES

KW - POLYMER-BOUND CATALYSTS

KW - RHODIUM

KW - CHEMISTRY

M3 - Article

SN - 0304-5102

VL - 83

SP - 37

EP - 50

JO - Journal of Molecular Catalysis

JF - Journal of Molecular Catalysis

IS - 1-2

ER -

STABLE SILICA-GRAFTED POLYMER-BOUND BULKY-PHOSPHITE MODIFIED RHODIUM HYDROFORMYLATION CATALYSTS

Abstract

Keywords

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