Methylation with Dimethyl Carbonate/Dimethyl Sulfide Mixtures: An Integrated Process without Addition of Acid/Base and Formation of Residual Salts

ChemSusChem ◽  
2021 ◽  
Author(s):  
Yuen Wai Lui ◽  
Bun Chan ◽  
Matthew Yuk-Yu Lui
Keyword(s):  
Dimethyl Carbonate ◽  
Dimethyl Sulfide ◽  
Integrated Process ◽  
Acid Base

MgO nanoparticles confined in ZIF-8 as acid-base bifunctional catalysts for enhanced glycerol carbonate production from transesterification of glycerol and dimethyl carbonate

2020 ◽  
Vol 351 ◽  
pp. 21-29 ◽  
Author(s):  
Cheng-Wei Chang ◽  
Zi-Jie Gong ◽  
Nai-Chieh Huang ◽  
Cheng-Yu Wang ◽  
Wen-Yueh Yu
Keyword(s):  
Dimethyl Carbonate ◽  
Glycerol Carbonate ◽  
Bifunctional Catalysts ◽  
Acid Base ◽  
Carbonate Production ◽  
Mgo Nanoparticles

Tin Tetra(tert-butoxide) with Acid–Base Additives: Valid Catalyst Precursors for Direct Synthesis of Dimethyl Carbonate from CO2and CH3OH

2011 ◽  
Vol 40 (12) ◽  
pp. 1408-1410 ◽  
Author(s):  
Yoichi Masui ◽  
Shunsuke Haga ◽  
Makoto Onaka
Keyword(s):  
Dimethyl Carbonate ◽  
Direct Synthesis ◽  
Acid Base

scholarly journals Integrated and Metal Free Synthesis of Dimethyl Carbonate and Glycidol from Glycerol Derived 1,3-Dichloro-2-propanol via CO2 Capture

2021 ◽  
Vol 3 (4) ◽  
pp. 685-698
Author(s):  
Santosh Khokarale ◽  
Ganesh Shelke ◽  
Jyri-Pekka Mikkola
Keyword(s):  
Co2 Capture ◽  
Dimethyl Carbonate ◽  
Chemical Species ◽  
Cyclic Carbonate ◽  
Chloride Ions ◽  
Synthetic Approach ◽  
Integrated Process ◽  
Reaction Conditions ◽  
Metal Free ◽  
Analysis Technique

Dimethyl carbonate (DMC) and glycidol are considered industrially important chemical entities and there is a great benefit if these moieties can be synthesized from biomass-derived feedstocks such as glycerol or its derivatives. In this report, both DMC and glycidol were synthesized in an integrated process from glycerol derived 1,3-dichloro-2-propanol and CO2 through a metal-free reaction approach and at mild reaction conditions. Initially, the chlorinated cyclic carbonate, i.e., 3-chloro-1,2-propylenecarbonate was synthesized using the equivalent interaction of organic superbase 1,8-diazabicyclo [5.4.0] undec-7-ene (DBU) and 1,3-dichloro-2-propanol with CO2 at room temperature. Further, DMC and glycidol were synthesized by the base-catalyzed transesterification of 3-chloro-1,2-propylenecarbonate using DBU in methanol. The synthesis of 3-chloro-1,2-propylenecarbonate was performed in different solvents such as dimethyl sulfoxide (DMSO) and 2-methyltetrahydrofuran (2-Me-THF). In this case, 2-Me-THF further facilitated an easy separation of the product where a 97% recovery of the 3-chloro-1,2-propylenecarbonate was obtained compared to 63% with DMSO. The use of DBU as the base in the transformation of 3-chloro-1,2-propylenecarbonate further facilitates the conversion of the 3-chloro-1,2 propandiol that forms in situ during the transesterification process. Hence, in this synthetic approach, DBU not only eased the CO2 capture and served as a base catalyst in the transesterification process, but it also performed as a reservoir for chloride ions, which further facilitates the synthesis of 3-chloro-1,2-propylenecarbonate and glycidol in the overall process. The separation of the reaction components proceeded through the solvent extraction technique where a 93 and 89% recovery of the DMC and glycidol, respectively, were obtained. The DBU superbase was recovered from its chlorinated salt, [DBUH][Cl], via a neutralization technique. The progress of the reactions as well as the purity of the recovered chemical species was confirmed by means of the NMR analysis technique. Hence, a single base, as well as a renewable solvent comprising an integrated process approach was carried out under mild reaction conditions where CO2 sequestration along with industrially important chemicals such as dimethyl carbonate and glycidol were synthesized.

Direct synthesis of dimethyl carbonate from CO2 and methanol over CaO–CeO2 catalysts: the role of acid–base properties and surface oxygen vacancies

2017 ◽  
Vol 41 (20) ◽  
pp. 12231-12240 ◽  
Author(s):  
Bin Liu ◽  
Congming Li ◽  
Guoqiang Zhang ◽  
Lifei Yan ◽  
Zhong Li
Keyword(s):  
Oxygen Vacancies ◽  
Dimethyl Carbonate ◽  
Direct Synthesis ◽  
Surface Oxygen ◽  
Acid Base ◽  
Base Properties

The addition of CaO to the CeO2 catalyst had a significant impact on the acid–base properties and amounts of oxygen vacancies on the surface catalyst.

Insight into the Hard−Soft Acid−Base Properties of Differently Substituted Phenylhydrazines in Reactions with Dimethyl Carbonate†

2008 ◽  
Vol 112 (46) ◽  
pp. 14525-14529 ◽  
Author(s):  
Anthony E. Rosamilia ◽  
Fabio Aricò ◽  
Pietro Tundo
Keyword(s):  
Dimethyl Carbonate ◽  
Acid Base ◽  
Soft Acid ◽  
Insight Into ◽  
Base Properties

scholarly journals Greener synthesis of dimethyl carbonate from carbon dioxide and methanol using a tunable ionic liquid catalyst

2019 ◽  
Vol 17 (1) ◽  
pp. 1252-1265
Author(s):  
Atul A. Pawar ◽  
Avinash A. Chaugule ◽  
Hern Kim
Keyword(s):  
Catalytic System ◽  
Oxide Catalyst ◽  
Dimethyl Carbonate ◽  
Raw Materials ◽  
Absorption Capacity ◽  
High Thermal Stability ◽  
Acid Base ◽  
Reaction Conditions ◽  
Optimum Reaction ◽  
Greener Synthesis

AbstractSeveral types of ionic liquids (ILs) performance towards dimethyl carbonate (DMC) synthesis using cheap reactant (methanol) and waste CO2 which is abundantly available in the environment are discussed. We synthesized ILs with cheap raw materials such as ethylene glycol. The main aim of this study is to synthesize efficient catalysts for the production of profitable fuel additives. ILs show high thermal stability, less viscosity, and low vapor pressure. In addition, some ILs have high CO2 absorption capacity due to moderate acid-base properties. These ILs reversibly capture more CO2 which is more efficient towards mass transport of methanol at optimum reaction conditions which enhance the DMC yield. This catalytic system is easily reusable for several reactions without decreased performance under the same reaction conditions. These reaction conditions had an effect on the synthesis of DMC. Temperature, pressure, IL loading, and IL/DMAP ratio were fine tuned. We propose a mechanism which the reaction may follow. The synthesized ILs required moderate reaction conditions and reduce waste gases (CO2) from the environments as they have high CO2 absorption capacity compared to the metal oxide catalyst. Therefore, this catalytic system helps and gives new direction to synthesize new catalyst for other application.

Magnesium Aluminum Spinel as an Acid–Base Catalyst for Transesterification of Diethyl Carbonate with Dimethyl Carbonate

2014 ◽  
Vol 144 (9) ◽  
pp. 1602-1608 ◽  
Author(s):  
Jun Wang ◽  
Lu Han ◽  
Shuping Wang ◽  
Jingcai Zhang ◽  
Yanzhao Yang
Keyword(s):  
Dimethyl Carbonate ◽  
Diethyl Carbonate ◽  
Base Catalyst ◽  
Acid Base ◽  
Aluminum Spinel ◽  
Magnesium Aluminum Spinel
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