PDF Publication Title:
Text from PDF Page: 010
Fu et al. In situ Catalytic Transformation SCHEME 10 | Transcarboxylation of NHC-CO2 and NHO-CO2 adducts. (Wu et al., 2017). The resulting polycarbonates derived from CO2 and the anion is proved to be the key intermediate in this reaction (Scheme 11). The ILs [HDBU][MIm] and [HDBU][TFE] can capture CO2 and also show catalytic activity to the reaction of CO2 and propargylic amines for the synthesis of 2-oxazolidinones and the reaction of CO2 with 2-aminobenzonitrile derivatives to synthesis quinazoline-2,4-(1H,3H)-diones. By enhancing the mass transfer with gas-liquid laminar flow continuous-flow microreactor, the simultaneous capture and fixation CO2 to 2- oxazolidinones and quinazoline-2,4-(1H,3H)-diones is realized (Scheme 11) (Vishwakarma et al., 2017). Due to the dual function as CO2 absorbents and conversion catalysts, ionic liquids can realize the transformation of captured CO2 with several kinds of substrates. Furthermore, the non-volatility characteristic of ionic liquids can facilitate product separation. Thus, the ionic liquids are considered as promising absorbents for the CCU process. FRUSTRATED LEWIS PAIRS (FLPS) The CO2 capture capacity of FLPs has been reported soon after the FLPs concept was in 2006 proposed (Welch et al., 2006; Momming et al., 2009; Travis et al., 2013; Weicker and Stephan, 2015; Wolff et al., 2016). As early as 2010, Stephan group revealed that 1:2 mixtures of PMes3/AlX3 (X = Cl or Br) in bromobenzene can react with CO2, forming CO2 adduct which can be converted to CH3OH with ammonia borane as reductant (Scheme 12) (Ménard and Stephan, 2010). In the same year, Piers group found that CO2 captured by FLP consisting of 2,2,6,6-tetramethylpiperidine (TMP) and B(C6 F5 )3 can be reduced to methane with triethylsilane (Scheme 12) (Berkefeld et al., 2010). Soon, it is found that the FLP composed by bis-borane 1,2-C6 H4 (BCl2 )2 and PtBu3 can capture CO2 and the forming capture product can be reduced to methanol by reductant such as amine- borane Me2 NHBH3 or [C5 H6 Me4 NH2 ][HB(C6 F5 )2 (C7 H11 )] (Scheme12) (Sgro et al., 2012). Wang group reports the FLP comprising of bis(2,4,6-tris(trifluoromethyl)phenyl)borane and a secondary amine (such as HNiPr2 or HNEt2) readily reacts with CO2 at 80◦C, affording carbamate boryl esters which can function as an intramolecular FLP to activate H2, affording ammonium borylformate salt and formamide adducts (Scheme 12) (Lu et al., 2013). Recently, Yan group incorporates FLP acceptor and donor into the styrene-based monomers, respectively to prepare two diblock copolymers consisting of the complementary FLP blocks and common polystyrene block. These two diblock copolymers can bind CO2, forming nanoparticle. The nanoparticle is then used as CO2 reservoir and catalyst to facilitate the formylation of amines with phenylsilane (Scheme 12) (Chen et al., 2018). The CO2 capture and H2 activation capacity makes FLPs attractive for CCU strategy, especially for the hydrogenation of captured CO2. However, in the current study, the FLPs promoted CO2 hydrogenation encounters difficulty in FLPs regeneration (Ashley et al., 2009). By now, the FLPs are merely used as CO2 capture reagents and reductants are still needed. Thus, the hydrogen activation ability of FLPs hasn’t Frontiers in Chemistry | www.frontiersin.org 10 July 2019 | Volume 7 | Article 525PDF Image | CO2 Capture and in situ Catalytic Transformation
PDF Search Title:
CO2 Capture and in situ Catalytic TransformationOriginal File Name Searched:
fchem-07-00525.pdfDIY PDF Search: Google It | Yahoo | Bing
NFT (Non Fungible Token): Buy our tech, design, development or system NFT and become part of our tech NFT network... More Info
IT XR Project Redstone NFT Available for Sale: NFT for high tech turbine design with one part 3D printed counter-rotating energy turbine. Be part of the future with this NFT. Can be bought and sold but only one design NFT exists. Royalties go to the developer (Infinity) to keep enhancing design and applications... More Info
Infinity Turbine IT XR Project Redstone Design: NFT for sale... NFT for high tech turbine design with one part 3D printed counter-rotating energy turbine. Includes all rights to this turbine design, including license for Fluid Handling Block I and II for the turbine assembly and housing. The NFT includes the blueprints (cad/cam), revenue streams, and all future development of the IT XR Project Redstone... More Info
Infinity Turbine ROT Radial Outflow Turbine 24 Design and Worldwide Rights: NFT for sale... NFT for the ROT 24 energy turbine. Be part of the future with this NFT. This design can be bought and sold but only one design NFT exists. You may manufacture the unit, or get the revenues from its sale from Infinity Turbine. Royalties go to the developer (Infinity) to keep enhancing design and applications... More Info
Infinity Supercritical CO2 10 Liter Extractor Design and Worldwide Rights: The Infinity Supercritical 10L CO2 extractor is for botanical oil extraction, which is rich in terpenes and can produce shelf ready full spectrum oil. With over 5 years of development, this industry leader mature extractor machine has been sold since 2015 and is part of many profitable businesses. The process can also be used for electrowinning, e-waste recycling, and lithium battery recycling, gold mining electronic wastes, precious metals. CO2 can also be used in a reverse fuel cell with nafion to make a gas-to-liquids fuel, such as methanol, ethanol and butanol or ethylene. Supercritical CO2 has also been used for treating nafion to make it more effective catalyst. This NFT is for the purchase of worldwide rights which includes the design. More Info
NFT (Non Fungible Token): Buy our tech, design, development or system NFT and become part of our tech NFT network... More Info
Infinity Turbine Products: Special for this month, any plans are $10,000 for complete Cad/Cam blueprints. License is for one build. Try before you buy a production license. May pay by Bitcoin or other Crypto. Products Page... More Info
CONTACT TEL: 608-238-6001 Email: greg@infinityturbine.com (Standard Web Page)