“Performance and kinetic modeling of Purolite C160 solid acid resin in the esterification of glycerol with acetic acid” / “Desempenho e modelo cinético da resina sólida ácida Purolite C160 na esterificação de glicerol com ácido acético”

2021 ◽  
Vol 7 (7) ◽  
pp. 70241-70257
Author(s):  
Natália Cristina Dalibera ◽  
Vitor Pereira Barbosa ◽  
Guilherme Carmelo Ungar ◽  
Kelly Cristina Manhani ◽  
Giovanna Pastore Meneguetti ◽  
...  

Fuel ◽  
2021 ◽  
Vol 302 ◽  
pp. 121175
Author(s):  
Ronglin Mou ◽  
Xinji Wang ◽  
Ziqing Wang ◽  
Daoyou Zhang ◽  
Zhili Yin ◽  
...  


2012 ◽  
Vol 8 ◽  
pp. 227-233 ◽  
Author(s):  
Nan Wang ◽  
Ronghua Wang ◽  
Xia Shi ◽  
Gang Zou

A clean process has been developed for the synthesis of 2-adamantylphenol derivatives through adamantylation of substituted phenols with adamantanols catalyzed by commercially available and recyclable ion-exchange sulfonic acid resin in acetic acid. The sole byproduct of the adamantylation reaction, namely water, could be converted into the solvent acetic acid by addition of a slight excess of acetic anhydride during the work-up procedure, making the process waste-free except for regeneration of the ion-exchange resin, and facilitating the recycling of the resin catalyst. The ion-exchange sulfonic acid resin catalyst could be readily recycled by filtration and directly reused at least ten times without a significant loss of activity. The key intermediate of adapalene, 2-(1-adamantyl)-4-bromophenol, could be produced by means of this waste-free process.



2020 ◽  
Vol 349 ◽  
pp. 57-67 ◽  
Author(s):  
Antonio B.S. Neto ◽  
Alcineia C. Oliveira ◽  
Enrique Rodriguez-Castellón ◽  
Adriana F. Campos ◽  
Paulo T.C. Freire ◽  
...  


2019 ◽  
Vol 43 (37) ◽  
pp. 14694-14700 ◽  
Author(s):  
Hilda Gómez Bernal ◽  
Claudio Oldani ◽  
Tiziana Funaioli ◽  
Anna Maria Raspolli Galletti

Multivariate analysis allowed the optimization of a reaction catalyzed by a robust solid acid Aquivion® P87S.







RSC Advances ◽  
2015 ◽  
Vol 5 (25) ◽  
pp. 19652-19658 ◽  
Author(s):  
An-Qi Wang ◽  
Xiu-Ling Wu ◽  
Jun-Xia Wang ◽  
Hui Pan ◽  
Xiao-Yun Tian ◽  
...  

A new spinel-style S2O82−/ZnAl2O4 catalyst with the mesoporous structure exhibited the well catalytic activity and structural stability.



2021 ◽  
Vol 17 (1) ◽  
pp. 13-21
Author(s):  
Shofiyya Julaika ◽  
Agus Farid Fadli ◽  
Widiyastuti Widiyastuti ◽  
Heru Setyawan

Solid acid catalyst is a promising alternative to the counterpart homogeneous acid for esterification reaction from the viewpoint of reusability and environmental concerns. This work aims to develop sulfonated mesoporous silica-carbon composite as solid acid catalyst for the esterification. The catalyst was synthesized from sodium silicate as the silica precursor and polyethylene glycol (PEG) as both carbon precursor and template via a sol-gel route in an aqueous system. Then, it was carbonized to produce mesoporous silica-carbon composite. Using the proposed method, the surface area of the silica-carbon composite could reach as high as 1074.21 m2/g. Although the surface area decreased to 614.02 m²/g when it was functionalized with sulfonate groups, the composite had a high ionic capacity of 5.3 mEq/g and exhibited high catalytic activity for esterification reaction of acetic acid with ethanol. At a reaction temperature of 80 °C, the acetic acid conversion reached 76.55% in 4 h. In addition, the catalyst had good reusability, which can be comparable with the commercial catalyst Foltrol F-007. It appears that the sulfonated silica-carbon composite prepared from sodium silicate using PEG as the carbon source a promising candidate as catalyst for esterification and the related area. Copyright © 2021 by Authors, Published by BCREC Group. This is an open access article under the CC BY-SA License (https://creativecommons.org/licenses/by-sa/4.0). 





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