Effect of Cation on Physical Properties and CO2 Solubility for Phosphonium-Based Ionic Liquids with 2-Cyanopyrrolide Anions
摘要:
A series of tetraalkylphosphonium 2-cyanopyrrolide ([P-nnnn][2-CNPyr]) ionic liquids (ILs) were prepared to investigate the effect of cation size on physical properties and CO2 solubility. Each IL was synthesized in our laboratory and characterized by NMR spectroscopy. Their physical properties, including density, viscosity, and ionic conductivity, were determined as a function of temperature and fit to empirical equations. The density gradually increased with decreasing cation size, while the viscosity decreased noticeably. In addition, the [P-nnnn] [2-CNPyr] ILs with large cations exhibited relatively low degrees of ionicity based on analysis of the Walden plots. This implies the presence of extensive ion pairing or formation of aggregates resulting from van der Waals interactions between the long hydrocarbon substituents. The CO2 solubility in each IL was measured at 22 degrees C using a volumetric method. While the anion is typically known to be predominantly responsible for the CO2 capture reaction, the [P-nnnn][2-CNPyr] ILs with shorter alkyl chains on the cations exhibited slightly stronger CO2 binding ability than the ILs with longer alkyl chains. We attribute this to the difference in entropy of reaction, as well as the variation in the relative degree of ionicity.
在 Etudie les 反应中,去取代芳香亲核试剂去组成 G-C 6 H 4 -OTs avec les 卤代月桂基三丁基鏻(G=NO 2 , CO 2 C 2 H 5 , H, OCH 3 )。在 etudie egalement les 反应 de NO 2 -C 6 H 4 -OSO 2 -C 6 H 4 -Y avec l'iodure de lauryltributylphosphonium (Y=p-CH 3 , p-B 2 , m-NO 2 )
在 Etudie les 反应中,去取代芳香亲核试剂去组成 G-C 6 H 4 -OTs avec les 卤代月桂基三丁基鏻(G=NO 2 , CO 2 C 2 H 5 , H, OCH 3 )。在 etudie egalement les 反应 de NO 2 -C 6 H 4 -OSO 2 -C 6 H 4 -Y avec l'iodure de lauryltributylphosphonium (Y=p-CH 3 , p-B 2 , m-NO 2 )
[EN] HALOGENATED HETEROALKENYL- AND HETEROALKYL-FUNCTIONALIZED ORGANIC COMPOUNDS AND METHODS FOR PREPARING SUCH COMPOUNDS<br/>[FR] COMPOSÉS ORGANIQUES HALOGÉNÉS À FONCTION HÉTÉROALCÉNYLE ET HÉTÉROALKYLE ET LEURS PROCÉDÉS DE PRÉPARATION
申请人:ARKEMA INC
公开号:WO2019067394A1
公开(公告)日:2019-04-04
A method for synthesizing halogenated organic compounds, such as halogenated alkenyl group-containing and halogenated alkyl group-containing compounds having a heteroatom (e.g., O,N.S) coupled to a carbon atom of a halogenated alkenyl or halogenated alkyl group, involves reacting a halogenated olefin such as a chloro-substituted trifluoropropenyl compound with an active hydrogen-containing organic compound such as an alcohol (e.g., an aliphatic monoalcohol, aliphatic polyalcohol, or a phenolic compound), a primary amine, a secondary amine or a thiol.
and properties that are due to their supramolecular structure. We synthesized a series of alkylated and fluorinated phosphonium dicyanamide ILs to study the relation between molecular structure and assembly with a focus on the roles of cation chain length and fluorination. Small angle X-ray scattering indicated a lamellar structure with long-range order for all fluorinated ILs, while alkylated ILs
EPOXY COMPOUND, EPOXY RESIN, EPOXY RESIN COMPOSITION, CURED RESIN PRODUCT, PREPREG, FIBER-REINFORCED COMPOSITE MATERIAL, AND PRODUCTION METHODS FOR THESE
申请人:Teijin Limited
公开号:US20210292471A1
公开(公告)日:2021-09-23
The present invention provides an epoxy compound indicated by chemical formula (1) (in chemical formula (1), X indicates a C1-10 aliphatic hydrocarbon group, R
1
and R
2
each independently indicate one selected from the group consisting of a hydrogen atom, an aliphatic hydrocarbon group, an aromatic group, an alkoxy group, and a halogen atom.)
PRODUCTION PROCESS FOR FLUOROSULFONYLIMIDE AMMONIUM SALT
申请人:Tsubokura Shiro
公开号:US20130331609A1
公开(公告)日:2013-12-12
A compound [II] such as ammonium N,N-di(fluorosulfonyl)imide is obtained by reacting a compound [I] such as N,N-di(chlorosulfonyl)imide and NH
4
F (HF)
p
. A compound [IV] such as an N,N-di(fluorosulfonyl)imide alkali metal salt is obtained by reacting the obtained compound [II] and an alkali metal compound or the like.
[EN] PROCESSES FOR PREPARING PARTIALLY FLUORINATED EPOXIDES AND PERFLUORINATED EPOXIDES AND COMPOSITIONS RELATED THERETO<br/>[FR] PROCÉDÉS DE PRÉPARATION D'ÉPOXYDES PARTIELLEMENT FLUORÉS ET D'ÉPOXYDES PERFLUORÉS ET COMPOSITIONS ASSOCIÉES
申请人:CHEMOURS CO FC LLC
公开号:WO2018165608A1
公开(公告)日:2018-09-13
This application relates to the preparation of partially fluorinated epoxides and perfluorinated epoxides which may be useful in various applications including refrigerants, heat transfer media, high-temperature heat pumps, organic Rankine cycles, fire extinguishing/fire suppression, propellants, foam blowing, solvents, gaseous dielectrics, and/or cleaning fluids. Compositions comprising the fluorinated epoxide compounds are also provided.