scholarly journals The effect of synthesis reaction medium polarity on the degree of substitution (DS) value of carboxymethyl Kappa carrageenan (CMKC) synthesis: case study of isopropanolethanol-ethyl acetate mixture uses as synthesis reaction medium

2020 ◽  
Vol 456 ◽  
pp. 012078
Author(s):  
N N Purnama ◽  
I K Kusumaningrum ◽  
A R Wijaya ◽  
B Zuhroti
Keyword(s):  
Ethyl Acetate ◽  
Reaction Medium ◽  
Degree Of Substitution ◽  
Synthesis Reaction ◽  
Medium Polarity ◽  
Kappa Carrageenan ◽  
Acetate Mixture ◽  
Ethyl Acetate Mixture

Chromatography Using Ternary Water–Acetonitrile–Ethyl Acetate Mixture as a Carrier Solution on a Microchip Incorporating Microchannels

2012 ◽  
Vol 41 (11) ◽  
pp. 1448-1450 ◽  
Author(s):  
Takafumi Matsuda ◽  
Naoya Jinno ◽  
Kenichi Yamashita ◽  
Hideaki Maeda ◽  
Akihiro Arai ◽  
...  
Keyword(s):  
Ethyl Acetate ◽  
Carrier Solution ◽  
Acetate Mixture ◽  
Ethyl Acetate Mixture

Simulation and Analysis of Process Behavior of Ultrasonic Distillation System for Separation Azeotropic Mixtures

2014 ◽  
Vol 625 ◽  
pp. 677-679
Author(s):  
Taha Mahdi ◽  
Arshad Ahmad ◽  
Mohamed M. Nasef ◽  
Adnan Ripin
Keyword(s):  
Ethyl Acetate ◽  
Aspen Plus ◽  
Azeotropic Mixtures ◽  
Distillation System ◽  
Process Behavior ◽  
Aspen Custom Modeler ◽  
Flowsheet Development ◽  
Process Simulator ◽  
Acetate Mixture

The performance of an ultrasonic distillation (USD) system is evaluated in Aspen Plus simulation environment. To facilitate the flowsheet development, a mathematical model of a single stage USD developed using Aspen Custom Modeler software is exported to Aspen Plus process simulator. As a case study, the separation of ethanol-ethyl acetate mixture that is known to form azeotrope 55 mole % of ethyl acetate at minimum boiling point of 71.8oC is considered. Simulation results revealed the achievable purity of ethyl acetate of 99 mole % from azeotropic mixture, thus reinforcing the anticipated potentials of sonication phenomena in intensifying distillation process to overcome azeotropes.

Michrochip chromatography using an open-tubular microchannel and a ternary water-ACN-ethyl acetate mixture carrier solution

2013 ◽  
Vol 36 (5) ◽  
pp. 965-970 ◽  
Author(s):  
Takafumi Matsuda ◽  
Kenichi Yamashita ◽  
Hideaki Maeda ◽  
Masahiko Hashimoto ◽  
Kazuhiko Tsukagoshi
Keyword(s):  
Ethyl Acetate ◽  
Carrier Solution ◽  
Acetate Mixture ◽  
Ethyl Acetate Mixture

Polymer structure and catalytic activity of ion exchangers

1981 ◽  
Vol 46 (7) ◽  
pp. 1577-1587 ◽  
Author(s):  
Karel Jeřábek
Keyword(s):  
Catalytic Activity ◽  
Ethyl Acetate ◽  
Active Sites ◽  
Crosslinking Agent ◽  
Reaction Medium ◽  
Polymer Structure ◽  
Local Concentration ◽  
Ion Exchangers ◽  
Styrene Divinylbenzene ◽  
Kinetics Of

Catalytic activity of ion exchangers prepared by partial sulphonation of styrene-divinylbenzene copolymers in reesterifications of ethyl acetate by methanol and propanol, hydrolysis of ethyl acetate and in synthesis of bisphenol A has been compared with data on polymer structure of these catalysts and with distribution of the crosslinking agent, divinylbenzene, calculated from literature data on kinetics of copolymerisation of styrene with divinylbenzene. It was found that the polymer structure of ion exchangers influences catalytic activity predominantly by changing the local concentration of acid active sites. The results obtained indicated that the effect of transport phenomena on the rate of catalytic reactions does not depend on the degree of swelling of the ion exchangers in reaction medium but it is mainly dependent on the relative affinity of reaction components to the acid groups or to the polymer skeleton.

Techno-economic and environmental assessment of bioethanol-based chemical process: A case study on ethyl acetate

2010 ◽  
Vol 30 (4) ◽  
pp. 675-684 ◽  
Author(s):  
Nguyen T. Hong Thuy ◽  
Yasunori Kikuchi ◽  
Hirokazu Sugiyama ◽  
Masaru Noda ◽  
Masahiko Hirao
Keyword(s):  
Ethyl Acetate ◽  
Environmental Assessment ◽  
Chemical Process
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