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Capture and Utilization of Carbon Dioxide with Polyethylene Glycol pp 17–40Cite as

PEG/scCO2 Biphasic Solvent System

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Abstract

PEG is an inexpensive, non-volatile and environmentally benign solvent, which represents an interesting reaction medium for conventional solvent replacement. More importantly, PEG could be regarded as a CO2-philic material through interaction of CO2 with the oxygen atoms of the ether linkages of PEG. In other words, “CO2-expansion” effect could lead to changes in the physical properties of the liquid phase mixture including lowered viscosity and increased gas/liquid diffusion rates. This chapter describes various functions of PEGs in catalytic reactions involving PEG/scCO2 biphasic solvent system, including PEG as a green replacement for organic solvents for the RhCl(PPh3)3-catalyzed hydrogenation of styrene to ethyl benzene, lipase-catalyzed acylation of alcohols, aerobic oxidation of alcohols and olefins, hydrogenation of α, β-unsaturated aldehydes (Sect. 3.1); PEG as PTC for catalytic reduction reactions (Sect. 3.2); PEG as surfactant for Aldol- and Mannich-type reactions (Sect. 3.3); PEG as support for oxidation of alcohols, hydroformylation of olefins (Sect. 3.4); and PEG as radical initiator for formylation of alcohols benzylic C=C cleavage reactions (Sect. 3.5).

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  1. State Key Lab of Elemento-Organic Chemistry, Nankai University, Tianjin, 300071, People’s Republic of China

    Zhen-Zhen Yang, Qing-Wen Song & Liang-Nian He

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  1. Zhen-Zhen Yang
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  2. Qing-Wen Song
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Correspondence to Liang-Nian He .

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Yang, ZZ., Song, QW., He, LN. (2012). PEG/scCO2 Biphasic Solvent System. In: Capture and Utilization of Carbon Dioxide with Polyethylene Glycol. SpringerBriefs in Molecular Science(). Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-31268-7_3

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