Efficient synthesis of glycerol carbonate from glycerol and urea with lanthanum oxide as a solid base catalyst

2011 ◽  
Vol 12 (15) ◽  
pp. 1458-1462 ◽  
Author(s):  
Liguo Wang ◽  
Yubo Ma ◽  
Ying Wang ◽  
Shimin Liu ◽  
Youquan Deng
Keyword(s):  
Lanthanum Oxide ◽  
Solid Base ◽  
Glycerol Carbonate ◽  
Base Catalyst ◽  
Efficient Synthesis ◽  
Solid Base Catalyst

UTILIZATION OF EGGSHELL-DERIVED MATERIAL AS A SOLID BASE CATALYST FOR EFFICIENT SYNTHESIS OF SUBSTITUTED CHALCONES

2017 ◽  
Vol 79 (5) ◽  
Author(s):  
Lina Mardiana ◽  
Bayu Ardiansah ◽  
Ridla Bakri ◽  
Antonius Herry Cahyana ◽  
Yulia Anita ◽  
...  
Keyword(s):  
Aldol Condensation ◽  
Biological Activities ◽  
Base Material ◽  
Solid Base ◽  
Base Catalyst ◽  
Efficient Synthesis ◽  
Facile Synthesis ◽  
Solid Base Catalyst ◽  
Simple Preparation ◽  
Short Time

A simple preparation of sodium impregnated on activated chicken eggshells (Na-ACE) as a solid base material for substituted chalcones synthesis is presented. After characterization using FTIR, XRD, SEM, EDS and total basicity, the catalyst was applied in Aldol condensation to produce corresponding chalcones 3a-3j. Confirmation of products structure has been done by FTIR, UV-Vis and MS instruments. Reaction can be carried out in relative short time with ethanol as the best solvent and gave the highest yield of 95 %. This research presented a facile synthesis of chalcone derivatives, the prominent class of organic compounds with interesting biological activities. 

Efficient Synthesis of Chalcones by a Solid Base Catalyst.

ChemInform ◽  
2005 ◽  
Vol 36 (49) ◽  
Author(s):  
M. Lakshmi Kantam ◽  
B. Veda Prakash ◽  
Ch. Venkat Reddy
Keyword(s):  
Solid Base ◽  
Base Catalyst ◽  
Efficient Synthesis ◽  
Solid Base Catalyst

Efficient Synthesis of Chalcones by a Solid Base Catalyst

2005 ◽  
Vol 35 (14) ◽  
pp. 1971-1978 ◽  
Author(s):  
M. Lakshmi Kantam ◽  
B. Veda Prakash ◽  
Ch. Venkat Reddy
Keyword(s):  
Solid Base ◽  
Base Catalyst ◽  
Efficient Synthesis ◽  
Solid Base Catalyst

scholarly journals Synthesis of Glycerol Carbonate from Glycerol and Dimethyl Carbonate Catalyzed by Solid Base Catalyst Derived from Waste Carbide Slag

2021 ◽  
Vol 2021 ◽  
pp. 1-14
Author(s):  
Jianye Wang ◽  
Zhu Wang ◽  
Haifeng Liu ◽  
Song Wang ◽  
Yifeng Sun
Keyword(s):  
Dimethyl Carbonate ◽  
Molar Ratio ◽  
Solid Base ◽  
Glycerol Carbonate ◽  
Significant Activity ◽  
Base Catalyst ◽  
Solid Base Catalyst ◽  
Glycerol Conversion ◽  
Carbide Slag ◽  
Calcination Method

Na2CO3 was loaded onto waste carbide slag (CS) by impregnation-calcination method to prepare the solid base catalyst, which was used to synthesize glycerol carbonate (GC) by the transesterification of glycerol with dimethyl carbonate (DMC). The prepared catalysts were characterized by a scanning electron microscope (SEM), thermogravimetric analysis (TGA), X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), and Brunner−Emmet−Teller (BET) techniques. The catalyst 15 wt.% Na2CO3-CS-800, which was prepared by impregnating CS to the Na2CO3 solution with the concentration of 15 wt.% weight of CS and calcined at 800°C for 3 hours, showed an excellent catalytic ability. When it was applied in the catalytic synthesis of GC, 98.1% glycerol conversion and 96.0% GC yield were achieved in 90 mins at 75°C with the catalyst dosage of 3 wt.% to total reactants and the DMC to glycerol molar ratio of 5. More importantly, the loading of Na2CO3 can effectively improve the reusability of catalyst. The 15 wt.% Na2CO3-CS-800 can still achieve 83.6% glycerol conversion and 80.5% GC yield after five-time reuse. Meanwhile, under the same reaction conditions, the CS-800, which was obtained by calcining CS at 800°C for 3 hours, experienced significant activity reduction with only 15.2% glycerol conversion and 14.1% GC yield after five-time reuse. FTIR and XRD characterization revealed that CO32- might play a key role in preserving active catalytic CaO component by forming protective CaCO3 shell on the catalyst surface.

Efficient synthesis of 2-oxazolidinone from epoxides and carbamates with binary Mg Fe oxides as a magnetic solid base catalyst

2012 ◽  
Vol 28 ◽  
pp. 13-17 ◽  
Author(s):  
Jianpeng Shang ◽  
Shimin Liu ◽  
Liujin Lu ◽  
Xiangyuan Ma ◽  
Yude He ◽  
...  
Keyword(s):  
Solid Base ◽  
Base Catalyst ◽  
Efficient Synthesis ◽  
Solid Base Catalyst ◽  
Fe Oxides ◽  
Magnetic Solid

Application of zirconia modified with KOH as heterogeneous solid base catalyst to new non-edible oil for biodiesel

2014 ◽  
Vol 80 ◽  
pp. 117-125 ◽  
Author(s):  
Mohammed Takase ◽  
Min Zhang ◽  
Weiwei Feng ◽  
Yao Chen ◽  
Ting Zhao ◽  
...  
Keyword(s):  
Edible Oil ◽  
Solid Base ◽  
Base Catalyst ◽  
Solid Base Catalyst ◽  
Heterogeneous Solid
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