By Zhen-Zhen Yang
During this quantity, Professor He and his coworkers summarize polyethylene glycol (PEG)-promoted CO2 chemistry at the foundation of realizing approximately section habit of PEG/CO2 process and response mechanism at molecular point. As PEG may be applied as a eco-friendly substitute for natural solvents, phase-transfer catalyst, surfactant, aid in numerous response platforms, considerably selling catalytic job and getting better pricey steel catalysts, fairly considered as a CO2-philic fabric, the authors concentrate on distinct purposes of PEG in CO2 seize and usage, together with PEG-functionalized catalysts for effective transformation of CO2 and PEG-functionalized absorbents for effective CO2 seize.
Furthermore, they describe carbon trap and usage approach instead method of tackle the strength penalty challenge in carbon catch and garage.
Interestingly, the authors additionally speak about PEG radical chemistry in dense CO2 as really inventive and weird use of PEG, most likely serves as a response medium and a thorough initiator for radical chemistry.
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Extra info for Capture and Utilization of Carbon Dioxide with Polyethylene Glycol (SpringerBriefs in Molecular Science: Green Chemistry for Sustainability)
J Macromol Sci Rev 38(1):77–142 47. Totten GE, Clinton NA (1988) Poly[ethylene glycol] derivatives as phase transfer catalysts and solvents for organic reactions. J Macromol Sci Rev 28(2):293–337 48. Dartt CB, Davis ME (1994) Catalysis for environmentally benign processing. Ind Eng Chem Res 33(12):2887–2899 49. Naik SD, Doraiswamy LK (1998) Phase transfer catalysis: chemistry and engineering. AIChE J 44(3):612–646 50. Chandler K, Culp CW, Lamb DR et al (1998) Phase-transfer catalysis in supercritical carbon dioxide: kinetic and mechanistic investigations of cyanide displacement on benzyl chloride.
Chem Commun 34:3562–3564 84. Wang J-Q, He L-N, Miao C-X (2009) Polyethylene glycol radical-initiated oxidation of benzylic alcohols in compressed carbon dioxide. , coal-fired power plants, represents a critical component of efforts aimed at stabilizing greenhouse gas levels in the atmosphere. In addition, removal of CO2 from natural gas is of vital importance to maintain and expand the availability of these clean-burning, efficient fuel sources. In recent years, worldwide efforts have been devoted to developing various technologies/processes for CCS, including adopting liquids, solids, and membranes as adsorbents.
1). Leitner et al. have synthesized the PEG-modified silica stabilized and immobilized palladium nanoparticles for aerobic alcohol oxidation in combination with scCO2 as reaction medium under mild conditions, which show high activity and excellent stability under continuous-flow operation . ScCO2 could diffuse the substrates and products from the active nanoparticles in a gas-like manner. This allows rapid chemical transformation at the active center, ensures efficient removal of the products from the surface, and minimizes the mobility of solid-supported catalytically active species .