Supported basic ionic liquid: Highly effective catalyst for the synthesis of 1,2-propylene glycol from hydrolysis of propylene carbonate

Xiao, Linfei; Yue, Qunfeng; Xia, Chungu; Xu, Li‐Wen

doi:10.1016/j.molcata.2007.03.044

Cited by 63 publications

(17 citation statements)

References 31 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Divinylbenzene cross-linked polystyrene (PS) was widely used as a heterogeneous catalyst support due to its compatibility with a wide range of reaction conditions, simple preparation, recyclability, environmental stability, low cost, and nonsolubility in commonly organic solvents and water. In the previous works, we found the basic ionic liquid supported on PS showed highly catalytic activity [65] in the hydrolysis of propylene carbonate to form 1,2-propylene glycol. In 2009, polystyrene resin-supported hydroxyl-functionalized ionic liquids were prepared by Sun et al and used as catalysts in the cycloaddition of carbon dioxide and epoxide [66].…”

Section: Introductionmentioning

confidence: 94%

Immobilized protic ionic liquids: Efficient catalysts for CO2 fixation with epoxides

Zhang

Xiao

et al. 2017

Journal of CO2 Utilization

View full text Add to dashboard Cite

A series of immobilized protic ionic liquids were prepared and used as catalysts for chemical fixation of carbon dioxide with epoxide to form cyclic carbonate. The effects of reaction temperature, carbon dioxide pressure and the loading of immobilized ionic liquid on the synthesis of cyclic carbonate from carbon dioxide and epoxide were investigated. Under the optimized reaction conditions, PS-ImHI showed the highest catalytic activity, and propylene carbonate was yield to 98.1% with more than 99% of selectivity. In the coupling reaction of carbon dioxide and epoxide, the immobilized ionic liquids showed high stability and could be reused ten times and used in a continuous flow reaction with a fixed-bed reactor for more than 120 h without loss of catalytic activity.

show abstract

Section: Introductionmentioning

confidence: 94%

Immobilized protic ionic liquids: Efficient catalysts for CO2 fixation with epoxides

Zhang

Xiao

et al. 2017

Journal of CO2 Utilization

View full text Add to dashboard Cite

show abstract

“…Excellent selectivity (>99%) and yield (>99%) of 1,2-propylene glycol was obtained in the presence of SBIL 3. The activity of SBIL 3 is higher than that of SBIL 2 and a simple hydroxide containing ion exchange resin was probably due to the reaction of OH -, CO 2 and H 2 O (Scheme 30) [51].…”

Section: Scheme 25mentioning

confidence: 99%

“…For preparation of supported basic ionic liquid 2 and 3 solid potassium hydroxide or potassium hydrogen carbonate and SIL 1 (10.0 g) were added to water and the mixture was stirred vigorously at room temperature for 24 h. Then the mixture was filtrated and washed with water until neutral, followed by drying under reduced pressure to give the supported basic ionic liquid 2 (SBIL 2) and supported basic ionic liquid 3 (SBIL 3) (Scheme 4) [51].…”

Section: Preparation Of Supported Basic Ionic Liquidmentioning

confidence: 99%

See 1 more Smart Citation

Basic ionic liquids. A short review

Hajipour

Rafiee

2009

JICS

166

View full text Add to dashboard Cite

Basic ionic liquids as environmental-friendly solvents and catalysts with high activity and selectivity and easily recovered materials were used to replace traditional bases such as KOH, NaOH, K 2 CO 3 , NaHCO 3 , NaOAc, triethylamine, or tetrabutylammonium acetate. Using the traditional bases generally suffered from disadvantages such as waste production, corrosion and environmental problems. Basic ionic liquids offering a new possibility for developing environmentally friendly basic catalysts due to the combination of the advantages of inorganic bases and ionic liquids. They are flexible, nonvolatile, noncorrosive, and immiscible with many organic solvents. Basic ionic liquids (BILs) have been used in base-catalyzed processes such as Michael addition, Markovnikov addition, Knoevenagel condensation, Henry reaction, Mannich reaction, oximation, FeistBenary reaction and etc. In this short review, we wish to present an overview of the types, properties, synthesis and applications of basic ionic liquids.

show abstract

“…More green and environmentally benign synthetic procedures are highly recommended for the organic synthesis. In the past few years, the utilization of ionic liquids in place of conventional organic solvents have much significance [98][99][100][101][102]. The effectiveness of synthetic route is not only measured by parameters such as yield and selectivity, but other factors like time, raw material, human resources, hazard and toxicity of the chemicals and energy consumption are also considered.…”

Section: Introductionmentioning

confidence: 99%

Ionic liquid assisted synthesis of six-membered oxygen heterocycles

Kaur

2019

SN Appl. Sci.

View full text Add to dashboard Cite

Due to special properties of ionic liquids (ILs) like their wide liquid range, good solvating ability, negligible vapour pressure, non-inflammability, environment friendly medium, high thermal stability, easy recycling and rate promoters etc. they are used in organic synthesis. The investigation for replacement of organic solvents in organic synthesis is a growing area of interest due to increasing environmental issues. Therefore, ILs have attracted the attention of chemists and act as catalyst and reaction medium in organic reaction with high activity. There is no doubt that ILs have become a major subject of study for modern chemistry. In comparison to traditional processes the use of ILs resulted in improved, complimentary or alternative selectivities in organic synthesis. The aim of present review is to focus on the applications of ILs for the synthesis of six-membered oxygen heterocycles (pyrans, chromenes, coumarins and dioxanes). Scheme 8 Synthesis of furans and pyran Scheme 27 Synthesis of 4H-benzo[b]pyrans Scheme 28 Synthesis of biscoumarins Scheme 29 Synthesis of 4-methyl-4,5-diphenyl-1,3-dioxane

show abstract

Supported basic ionic liquid: Highly effective catalyst for the synthesis of 1,2-propylene glycol from hydrolysis of propylene carbonate

Cited by 63 publications

References 31 publications

Immobilized protic ionic liquids: Efficient catalysts for CO2 fixation with epoxides

Immobilized protic ionic liquids: Efficient catalysts for CO2 fixation with epoxides

Basic ionic liquids. A short review

Ionic liquid assisted synthesis of six-membered oxygen heterocycles

Contact Info

Product

Resources

About