Glycerol Conversion to Diglycerol via Etherification under Microwave Irradiation

Author(s):  
Muhammad Ayoub ◽  
Wan Jie Wei ◽  
Manzoor Ahmad ◽  
Ranitha Mathialagan ◽  
Sarah Farrukh ◽  
...  
2020 ◽  
Vol 99 (1) ◽  
pp. 16-19
Author(s):  
Muhammad SAJID ◽  
Muhammad AYOUB ◽  
Yoshimitsu UEMURA ◽  
Suzana YUSUP ◽  
Bawadi B ABDULLAH ◽  
...  

2019 ◽  
Vol 16 ◽  
pp. 2101-2107
Author(s):  
Muhammad Sajid ◽  
Muhammad Ayoub ◽  
Yoshimitsu Uemura ◽  
Suzana Yusup ◽  
Mahmood Saleem ◽  
...  

2019 ◽  
Vol 8 (1) ◽  
pp. 01-07
Author(s):  
Dzikri Hamzah ◽  
Taufik Rinaldi ◽  
Marwan Marwan ◽  
Wahyu Rinaldi

Esterification of glycerol with acetic acid under microwave irradiation in the presence of activated natural zeolite was investigated. Natural zeolite was collected from Ujung Pancu (Aceh Besar) and chemically activated with hydrochloric acid. The reaction was carried out in a stirred glass flask reactor placed inside microwave oven. Experimental variables include microwave transmission time, molar ratio of glycerol to acetic acid, and catalyst loading. XRD profile of activated zeolite showed an increase of Si/Al ratio to 6.042 and the crystallinity decreased slightly by 12.23%, mainly due to dealumination during chemical treatment. Qualitative analysis by FTIR shows that the reaction product obtained by microwave heating contains ester group (triacetin) at wavelength 1706.669 cm-1, while the quantitative analysis by acidi-alkalimetry titration indicates the highest glycerol conversion of 93.033% at the reaction condition of the molar ratio of 1:9, catalyst loading of 3%, and microwave transmission of 10 minutes. The present work suggests that microwave can be utilized as efficient heating technique in esterification of glycerol to triacetin.


Author(s):  
Mahesh G. Kharatmol ◽  
Deepali Jagdale

Pyrazoline class of compounds serve as better moieties for an array of treatments, they have antibacterial, antifungal, antiinflammatory, antipyretic, diuretic, cardiovascular activities. Apart from these they also have anticancer activities. So, pertaining to its importance, many attempts are made to synthesize pyrazolines. Since conventional methods of organic synthesis are energy and time consuming. There are elaborate pathways for green and eco-friendly synthesis of pyrazoline derivatives including microwave irradiation, ultrasonic irradiation, grinding and use of ionic liquids which assures the synthesis of the same within much lesser time and by use of minimal energy


2015 ◽  
Vol 14 (3) ◽  
pp. 509-517 ◽  
Author(s):  
Ionut Banu ◽  
Georgiana Guta ◽  
Costin Sorin Bildea ◽  
Grigore Bozga

2014 ◽  
Vol 29 (2) ◽  
pp. 149-154 ◽  
Author(s):  
Shan HUANG ◽  
Ji-Gang WANG ◽  
Song LIU ◽  
Fan LI

2013 ◽  
Vol 30 (4) ◽  
pp. 398
Author(s):  
Wei DING ◽  
Ling WANG ◽  
Tao YU ◽  
Guangmiao QU ◽  
Xiang GAO ◽  
...  

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