Supported Pd catalyst preparation using liquid carbon dioxide

Jaehoon Kim; George W. Roberts; Douglas J. Kiserow

doi:10.1021/cm061440d

Supported Pd catalyst preparation using liquid carbon dioxide

Jaehoon Kim, George W. Roberts, Douglas J. Kiserow

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

19 Scopus citations

Abstract

The use of liquid carbon dioxide(LCO 2) for synthesis of supported metal catalysts was investigated. The extremely low surface tension of LCO 2 makes it an excellent wetting agent, even on very low surface energy substrates. This low surface tension may help to reduce the redistribution of metal compounds caused by the high surface tension of typical liquid solvents. In addition the low surface tension of LCO 2 is advantageous in preventing capillary collapse of sol-gels and high-aspect-ratio structures during drying and facilitates the permeation of organomettallic compounds into small pores. The low viscosity of LCO 2 can result in faster diffusion and can help reduce solute concentration gradients. Particle diameters in the range 20-60 nm were obtained on an α alumina support by adjusting the solution concentration and on a γ-alumina support, Pd diameters in the range 2-7 nm can also be controlled by varying the concentration.

Original language	English
Pages (from-to)	4710-4712
Number of pages	3
Journal	Chemistry of Materials
Volume	18
Issue number	20
DOIs	https://doi.org/10.1021/cm061440d
State	Published - 3 Oct 2006
Externally published	Yes

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title = "Supported Pd catalyst preparation using liquid carbon dioxide",

abstract = "The use of liquid carbon dioxide(LCO 2) for synthesis of supported metal catalysts was investigated. The extremely low surface tension of LCO 2 makes it an excellent wetting agent, even on very low surface energy substrates. This low surface tension may help to reduce the redistribution of metal compounds caused by the high surface tension of typical liquid solvents. In addition the low surface tension of LCO 2 is advantageous in preventing capillary collapse of sol-gels and high-aspect-ratio structures during drying and facilitates the permeation of organomettallic compounds into small pores. The low viscosity of LCO 2 can result in faster diffusion and can help reduce solute concentration gradients. Particle diameters in the range 20-60 nm were obtained on an α alumina support by adjusting the solution concentration and on a γ-alumina support, Pd diameters in the range 2-7 nm can also be controlled by varying the concentration.",

author = "Jaehoon Kim and Roberts, \{George W.\} and Kiserow, \{Douglas J.\}",

year = "2006",

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doi = "10.1021/cm061440d",

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T1 - Supported Pd catalyst preparation using liquid carbon dioxide

AU - Kim, Jaehoon

AU - Roberts, George W.

AU - Kiserow, Douglas J.

PY - 2006/10/3

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N2 - The use of liquid carbon dioxide(LCO 2) for synthesis of supported metal catalysts was investigated. The extremely low surface tension of LCO 2 makes it an excellent wetting agent, even on very low surface energy substrates. This low surface tension may help to reduce the redistribution of metal compounds caused by the high surface tension of typical liquid solvents. In addition the low surface tension of LCO 2 is advantageous in preventing capillary collapse of sol-gels and high-aspect-ratio structures during drying and facilitates the permeation of organomettallic compounds into small pores. The low viscosity of LCO 2 can result in faster diffusion and can help reduce solute concentration gradients. Particle diameters in the range 20-60 nm were obtained on an α alumina support by adjusting the solution concentration and on a γ-alumina support, Pd diameters in the range 2-7 nm can also be controlled by varying the concentration.

AB - The use of liquid carbon dioxide(LCO 2) for synthesis of supported metal catalysts was investigated. The extremely low surface tension of LCO 2 makes it an excellent wetting agent, even on very low surface energy substrates. This low surface tension may help to reduce the redistribution of metal compounds caused by the high surface tension of typical liquid solvents. In addition the low surface tension of LCO 2 is advantageous in preventing capillary collapse of sol-gels and high-aspect-ratio structures during drying and facilitates the permeation of organomettallic compounds into small pores. The low viscosity of LCO 2 can result in faster diffusion and can help reduce solute concentration gradients. Particle diameters in the range 20-60 nm were obtained on an α alumina support by adjusting the solution concentration and on a γ-alumina support, Pd diameters in the range 2-7 nm can also be controlled by varying the concentration.

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U2 - 10.1021/cm061440d

DO - 10.1021/cm061440d

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SN - 0897-4756

VL - 18

SP - 4710

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JO - Chemistry of Materials

JF - Chemistry of Materials

IS - 20

ER -

Supported Pd catalyst preparation using liquid carbon dioxide

Abstract

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