Results 231 to 240 of about 362,061 (261)

Synthesis of glycerol carbonate from glycerol and dimethyl carbonate catalyzed by K2CO3/MgO

Research on Chemical Intermediates, 2011
A series of M/MgO (M = CaO, KNO3, KOH, K2CO3) catalysts were prepared by a dry impregnation method and used for synthesis of glycerol carbonate from glycerol and dimethyl carbonate. It was found that K2CO3/MgO was the most efficient catalyst, with a glycerol carbonate yield of approximately 99% under the conditions: DMC/glycerol molar ratio 2.5:1 ...
Meimei Du, Qiuxiao Li, Wantian Dong, Tao Geng, Yajie Jiang   +4 more
openaire   +1 more source

Transesterification of Glycerol to Glycerol Carbonate Over Alkali Carbonate‐Carbon Hybrid Catalysts

ChemCatChem
AbstractSodium‐containing polymers and rapeseed meal were utilized as precursors for carbon‐inorganic hybrid catalysts offering the advantages of easily accessible raw materials and a straightforward preparation process. The resulting catalysts comprised inorganic components dispersed within a carbonaceous matrix and exhibited basic properties.
Anna Malaika, Martyna Rachela, Mieczysław Kozłowski   +2 more
openaire   +1 more source

On the deactivation of alkali solid catalysts for the synthesis of glycerol carbonate from glycerol and dimethyl carbonate

Reaction Kinetics, Mechanisms and Catalysis, 2010
The deactivation of alkali solid catalysts for the synthesis of glycerol carbonate from glycerol and dimethyl carbonate was investigated. Calcium oxide, calcium hydroxide and calcium methoxide were chosen as the representatives of the alkali solid catalysts. When the catalysts were recycled, the yield of glycerol carbonate decreased dramatically.
Jiabo Li, Tao Wang
openaire   +1 more source

An Efficient Palladium Catalyst System for the Oxidative Carbonylation of Glycerol to Glycerol Carbonate

ChemSusChem, 2011
AbstractGlycerol carbonate can be readily synthesized from the oxidative carbonylation of glycerol catalyzed by PdCl2(phen) (phen=1,10‐phenanthroline) with the aid of CuI. High conversion (95 %) and selectivity (98 %) are achieved and the turnover frequency (TOF) reaches 455 h−1.
Jianglin, Hu, Yanlong, Gu, Zhenhong, Guan, Jinjin, Li, Wanling, Mo, Tao, Li, Guangxing, Li   +6 more
openaire   +2 more sources

Synthesis of Glycerol Carbonate from Glycerol and Dimethyl Carbonate Using Ionic Liquid Catalysts

Journal of Biobased Materials and Bioenergy, 2016
Acidic, basic and neutral ionic liquids (ILs) were prepared by two-step method. Their IR and NMR spectra showed that their structures were in accordance with their theoretical structure. Then these ILs were used as catalysts in the Glycerol carbonate (GC) of glycerol with dimethyl carbonate (DMC).
Miao, Changlin, Fan, Pei, Zhuang, Xinshu, Wang, Zhongming, Li, Huiwen, Lv, Pengmei, Yuan, Zhenhong   +6 more
openaire   +2 more sources

Synthesis of glycerol carbonate from glycerol and urea with gold-based catalysts

Dalton Transactions, 2011
The reaction of glycerol with urea to form glycerol carbonate is mostly reported in the patent literature and to date there have been very few fundamental studies of the reaction mechanism. Furthermore, most previous studies have involved homogeneous catalysts whereas the identification of heterogeneous catalysts for this reaction would be highly ...
Hammond, Ceri, Lopez-Sanchez, Jose A., Hasbi Ab Rahim, Mohd, Dimitratos, Nikolaos, Jenkins, Robert L., Carley, Albert F., He, Qian, Kiely, Christopher J., Knight, David W., Hutchings, Graham J.   +9 more
openaire   +3 more sources

Catalytic Synthesis of Hydroxymethyl‐2‐oxazolidinones from Glycerol or Glycerol Carbonate and Urea

ChemSusChem, 2012
AbstractOxazolidinones have been synthesized by reacting glycerol carbonate or glycerol with urea in the presence of γ‐Zr phosphate as a catalyst. The conversion yield of the polyol or its carbonate depends on the temperature. Below 408 K the selectivity is 100 % with a conversion of up to 25 %, whereas increasing the temperature means that conversion ...
Angela Dibenedetto, Francesco Nocito, Antonella Angelini, Imre Papai, Michele Aresta, Raffaella Mancuso   +5 more
openaire   +4 more sources

Synthesis of Glycerol Carbonate from Glycerol, a By-Product of Biodiesel Production

International Journal of Chemical Reactor Engineering, 2009
Methyl esters of fatty acids (also known as biodiesel) made from transesterification of vegetable oils and animal fats with methanol, have shown a lot of promise as alternative diesel fuels. Glycerol is the inevitable byproduct of transesterification process.
Zsanett Herseczki, Tamás Varga, Gyula Marton   +2 more
openaire   +1 more source

Synthesis of glycerol carbonate from glycerol and dimethyl carbonate catalyzed by NaOH/γ-AlO

Fuel Processing Technology, 2013
Guangxing Li
exaly  

A review on the performance of glycerol carbonate production via catalytic transesterification: Effects of influencing parameters

Energy Conversion and Management, 2014
Mohamed Kheireddine Aroua, Rozita Yusoff, Gek Cheng Ngoh   +2 more
exaly