CO2 + ionic liquid biphasic system for reaction/product separation in the synthesis of cyclic carbonates

被引：28

作者：

Paninho, Ana B. ^{[1
]}

Ventura, Alexandre L. R. ^{[1
]}

Branco, Luis C. ^{[1
]}

Pombeiro, Armando J. L. ^{[2
]}

Guedes da Silva, M. Fatima C. ^{[2
]}

da Ponte, Manuel Nunes ^{[1
]}

Mahmudov, Kamran T. ^{[2
,3
,4
]}

Nunes, Ana V. M. ^{[1
]}

机构：

[1] Univ Nova Lisboa, Fac Ciencias & Tecnol, Dept Quim, LAQV,REQUIMTE, P-2829516 Caparica, Portugal

[2] Univ Lisbon, Inst Super Tecn, Ctr Quim Estrut, Av Rovisco Pais, P-1049001 Lisbon, Portugal

[3] Baku State Univ, Dept Chem, Z Xalilov Str 23,Az 1148, Baku, Azerbaijan

[4] RUDN Univ, Organ Chem Dept, 6 Miklukho Maklaya Str, Moscow 117198, Russia

来源：

JOURNAL OF SUPERCRITICAL FLUIDS | 2018年 / 132卷

关键词：

CO2; utilization; Epoxides; Cyclic carbonates; Supercritical CO2 extraction; Ionic liquids; Propylene carbonate; CARBON-DIOXIDE; II COMPLEXES; CU-II; ARYLHYDRAZONES; CATALYSTS; EPOXIDES; PRECIPITATION; EXTRACTION; CONVERSION; EFFICIENT;

D O I：

10.1016/j.supflu.2017.07.039

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The possibility of using supercritical CO2 (scCO(2)) technology as a second step for extracting propylene carbonate produced from the coupling reaction between propylene oxide and CO2, was investigated. The coupling reaction was performed under biphasic gas-liquid conditions, using a zinc(II) complex of arylhydrazones of beta-diketones (Zn(II)-AHBD) as metal catalyst, combined with tetrabutylammonium bromide (TBABr). 1-Ethyl-3-methylimidazolium ethyl sulfate ([EMIM][EtSO4]) and methyltrioctylammonium chloride ([ALIQUAT][Cl]) were explored as reaction solvents, in order to efficiently solubilize the catalyst and retain the catalyst inside the reactor during the product extraction step. Results obtained were compared with other common used solvents as methyl ethyl ketone (MEK), ethyl lactate (EL), and polyethylene glycol 400 (PEG 400). [ALIQUAT] [Cl] was selected as the most promising solvent and scCO(2) extraction was effectively applied as a second step to isolate propylene carbonate from the catalyst system. Following this strategy, the catalyst system was reused three times, without loss of activity.

引用

页码：71 / 75

页数：5

共 37 条

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