scholarly journals Thermodynamic and Kinetic Study on the Catalysis of Isoamyl Acetate by a Cation-Exchange Resin in an Intensified Fixed-Bed Reactor

ACS Omega ◽  
2020 ◽  
Vol 5 (40) ◽  
pp. 25810-25818
Author(s):  
Lei Chen ◽  
Ying Liu ◽  
Zhi Cao ◽  
Gaodong Yang ◽  
Aidong Zhou ◽  
...  
Keyword(s):  
Kinetic Study ◽  
Cation Exchange ◽  
Exchange Resin ◽  
Fixed Bed ◽  
Cation Exchange Resin ◽  
Isoamyl Acetate ◽  
Fixed Bed Reactor

Study on Methyl Esterification of Salicylic Acid Using an Intensified Fixed Bed Reactor

2019 ◽  
Vol 17 (8) ◽  
Author(s):  
Gaodong Yang ◽  
Si Chen ◽  
Xiabing Li ◽  
Chengzhi Liu ◽  
Jian He ◽  
...  
Keyword(s):  
Salicylic Acid ◽  
Exchange Resin ◽  
Fixed Bed ◽  
Cation Exchange Resin ◽  
Fixed Bed Reactor ◽  
Catalyst Loading ◽  
Optimal Conditions ◽  
Methyl Esterification ◽  
Acid Catalyzed ◽  
Good Agreement

Abstract Methyl esterification of salicylic acid catalyzed by strong acidic cation exchange resin NKC-9 was carried out on an intensified fixed bed reactor (IFBR) to investigate the effects of different parameters and the results showed that the optimal conditions were as follows: circulation speed is 1.5 L· h−1, catalyst loading is 20 %, initial mole ratio of salicylic acid and methanol is 1:6 and reaction temperature is 343.15 K. The thermodynamics for the methyl esterification of salicylic acid have been studied to obtain the equilibrium constant from the experimental data at different temperature. PH, E-R and LHHW models were used to correlate the kinetic data in the temperature range from 328.15 to 348.15 K. The calculated value is in good agreement with experimental value, indicating that all the models can be used to accurately describe the process of the methyl esterification of salicylic acid.

scholarly journals A Catalyst Reusability Study in Palm Fatty Acid Distillate and Glycerol Esterification using Multi-Criteria Decision Analysis and Reaction Kinetics Approach

2020 ◽  
Vol 37 (2) ◽  
Author(s):  
Hanifrahmawan Sudibyo ◽  
Febbie Setyaningrum ◽  
Rochmadi ◽  
Mohammad Fahrurrozi
Keyword(s):  
Fatty Acid ◽  
Free Fatty Acid ◽  
Kinetic Study ◽  
Cation Exchange ◽  
Exchange Resin ◽  
Cation Exchange Resin ◽  
Palm Fatty Acid Distillate ◽  
Catalyst Reusability ◽  
Glycerol Esterification ◽  
Fatty Acid Distillate

As a byproduct of the physical refinement of crude palm oil, palm fatty acid distillate or PFAD has a potential to be transformed into monoglycerides by means of irreversible esterification with glycerol over a cation exchange resin catalyst. Irreversibility of the esterification can be assured by continuous azeotropic removal of water by adding xylene as an entrainer. Because PFAD-glycerol esterification demands high temperatures for fast conversion and high selectivity of monoglycerides, it is necessary to test catalyst reusability performance. In this research, evaluation of catalyst reusability performance was based on five parameters: free fatty acid conversion, the rate of free fatty acid decomposition, the selectivity of monoglycerides, monoglyceride concentration, and the cation exchange capacity of the catalyst. The cation exchange resin used was Tulsion T-42 SM. The evaluation was conducted using the simple multi-attribute rating technique extended to ranking (SMARTER) method. The results showed that the optimum reaction temperature was 180°C. Ultimately, a kinetic study at 180°C was also performed to model the reaction after using similar catalysts for certain times. This kinetic study revealed that the reaction mechanism changed from Langmuir-Hinshelwood to Eley-Rideal after several cycles of catalyst reuse.  

Synthesis of Biodiesel from by-Product of Plant Oil by the Catalysis of Solid Acid in Fixed Bed

2011 ◽  
Vol 322 ◽  
pp. 15-20
Author(s):  
Li Min Xi ◽  
Shu Yong Cao
Keyword(s):  
Solid Acid ◽  
Exchange Resin ◽  
Fixed Bed ◽  
Cation Exchange Resin ◽  
Acid Methyl Ester ◽  
Fixed Bed Reactor ◽  
National Standard ◽  
Deodorizer Distillate ◽  
Plant Oil ◽  
Acid Methyl

Fatty acid methyl ester biodiesel was successfully synthesized by the esterification of the palm oil deodorizer distillate (PODD) with methanol, catalyzed by the strongly acidic cation-exchange resin as solid acid in a self-made fixed bed reactor. The reaction condition was optimized, and the product could basically reach both national standard and Germany standard.

Removal of Ni(II), Zn(II) and Pb(II) from aqueous solutions using cation-exchange resin in fixed-bed column

2015 ◽  
Vol 57 (40) ◽  
pp. 18770-18781 ◽  
Author(s):  
Myzairah Hamdzah ◽  
Zaini Ujang ◽  
Mohamed Mahmoud Nasef ◽  
Norhayati Abdullah ◽  
Farrah Aini Dahalan
Keyword(s):  
Aqueous Solutions ◽  
Cation Exchange ◽  
Exchange Resin ◽  
Fixed Bed ◽  
Cation Exchange Resin ◽  
Fixed Bed Column
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