scholarly journals Amine-Functionalized Sugarcane Bagasse: A Renewable Catalyst for Efficient Continuous Flow Knoevenagel Condensation Reaction at Room Temperature

Molecules ◽  
2017 ◽  
Vol 23 (1) ◽  
pp. 43 ◽  
Author(s):  
Yanhui Qiao ◽  
Junjiang Teng ◽  
Shuangfei Wang ◽  
Hao Ma
Keyword(s):  
Sugarcane Bagasse ◽  
Continuous Flow ◽  
Room Temperature ◽  
Knoevenagel Condensation ◽  
Condensation Reaction ◽  
Amine Functionalized ◽  
Knoevenagel Condensation Reaction

N-Doped Carbon as a Solid Base Catalyst for Continuous Flow Knoevenagel Condensation

2021 ◽  
Author(s):  
Alina Brzęczek-Szafran ◽  
Magdalena Gwóźdź ◽  
Anna Chrobok ◽  
Anna Kolanowska ◽  
Maciej Krzywiecki ◽  
...  
Keyword(s):  
Continuous Flow ◽  
Knoevenagel Condensation ◽  
Condensation Reaction ◽  
Solid Base ◽  
Base Catalyst ◽  
Solid Base Catalyst ◽  
Flow Process ◽  
Knoevenagel Condensation Reaction ◽  
Continuous Flow Process ◽  
First Time

The application of N-doped carbon as a basic, heterogeneous catalyst in a continuous-flow process is described for the first time. The Knoevenagel condensation reaction was chosen to demonstrate the potential...

scholarly journals Evaluation of Structural Properties and Catalytic Activities in Knoevenagel Condensation Reaction of Zeolitic Imidazolate Framework-8 Synthesized under Different Conditions

2019 ◽  
Vol 2019 ◽  
pp. 1-8 ◽  
Author(s):  
Pham Dinh Du ◽  
Nguyen Viet Duy Thanh ◽  
Nguyen Trung Hieu
Keyword(s):  
Reaction Time ◽  
Structural Properties ◽  
High Temperatures ◽  
Room Temperature ◽  
Knoevenagel Condensation ◽  
Condensation Reaction ◽  
Zeolitic Imidazolate Framework ◽  
Catalytic Activities ◽  
Molar Ratios ◽  
Knoevenagel Condensation Reaction

In the present study, the zeolitic imidazolate framework-8 (ZIF-8) was synthesized at both room temperature and high temperatures. The effects of solvents, molar ratios of precursors, reaction time, and temperature on the structural properties of the as-prepared materials were investigated. Moreover, the surface morphologies of the obtained specimens were characterized using X-ray diffraction, scanning electron microscopy, Fourier-transform infrared spectroscopy, and nitrogen adsorption methods. The results show that ZIF-8 was formed in methanol and water at room temperature and in dimethylformamide (DMF) at high temperatures. Further, in methanol, the molar ratios of precursors and reaction time have negligible effects on the morphologies and structures of ZIF-8; however, in DMF, the reaction temperature has a significant influence on the microstructures of ZIF-8. The catalytic activities of the obtained materials were evaluated using the Knoevenagel condensation reaction, and ZIF-8 proves to be an excellent solid base catalyst.

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