Production of Ethyl Acetate Catalyzed by Activated Carbon-Based Solid Acid Catalyst

Author(s):  
Jia Li ◽  
Yan Li ◽  
Hua Zhao
Molecules ◽  
2010 ◽  
Vol 15 (10) ◽  
pp. 7188-7196 ◽  
Author(s):  
Xiao-Yan Liu ◽  
Miao Huang ◽  
Hai-Long Ma ◽  
Zeng-Qiang Zhang ◽  
Jin-Ming Gao ◽  
...  

2020 ◽  
Vol 56 (89) ◽  
pp. 13840-13843
Author(s):  
Zhou Fang ◽  
Danke Chen ◽  
Zhuoyi Li ◽  
Xu Ma ◽  
Xinyi Wan ◽  
...  

A solid acid catalyst POM@MOF thin film was prepared and utilized for the efficient hydrolysis of esters with a long durability.


2019 ◽  
Vol 7 (1) ◽  
pp. 55-80 ◽  
Author(s):  
Fatemeh Ghorbani ◽  
Seied Ali Pourmousavi ◽  
Hamzeh Kiyani

Background: Much attention has been focused on heterogeneous catalysts. Reactions with these recoverable and reusable catalysts are clean, selective with high efficiency. Among the heterogeneous solid acid catalyst in organic synthesis, Carbon-Based Solid Acids (CBSAs), which are important solid acid with many practical and research applications have been extensively studied. In this work, green Pistachio peel, a biomass waste, was converted into a novel carbon-based solid acid catalyst (Pis-SO3H). Objective: The aim of this work is to synthesize highly sulfonated carbon as an efficient, recyclable, nontoxic solid acid catalyst by simultaneous sulfonation, dehydration and carbonization of green Pistachio peel as biomass and investigate the catalytic activity of Pis-SO3H in acetalization, thioacetalization, acylation of aldehydes and synthesis of 3,3'-Arylmethylene-bis(4-hydroxycoumarin) derivatives. Method: Pis-SO3H was synthesized by an integrated fast one-step hydrothermal carbonization and sulfonation process in the presence of sulfuric acid. The characterization of the physicochemical properties of Pis-SO3H was achieved by XRD, FT-IR, FE-SEM, and elemental analysis. Results: The result of acid-base titration showed that the total acidity of the catalyst was 7.75 mmol H+g−1. This new heterogeneous catalyst has been efficiently used for the chemoselective thioacetalization, acetalization and acylation of aldehyde and the synthesis of biscoumarins under solvent-free conditions. All the reactions work easily in high yields. The antimicrobial activity of some of the biscoumarins was evaluated in screening by disk diffusion assay for the zone of inhibition. Conclusion: The catalytic activity of the Pis-SO3H was investigated during acetalization, thioacetalization, acylation and synthesis of biscoumarins. The results of protection of carbonyl groups and synthesis of biscoumarins in the present work offer effective alternatives for environmentally friendly utilization of abundant biomass waste.


RSC Advances ◽  
2019 ◽  
Vol 9 (50) ◽  
pp. 28902-28907 ◽  
Author(s):  
Runming Gong ◽  
Zihao Ma ◽  
Xing Wang ◽  
Ying Han ◽  
Yanzhu Guo ◽  
...  

Waste newspaper is one of the most common cellulosic materials.


2020 ◽  
Vol 44 (19) ◽  
pp. 7968-7975 ◽  
Author(s):  
Tao Yang ◽  
Wenzhi Li ◽  
Mingxue Su ◽  
Yang Liu ◽  
Minghou Liu

A novel carbon-based solid acid catalyst (SC-GCa-800) was prepared by the high-temperature carbonization of calcium gluconate followed by sulfonation with 4-diazoniobenzenesulfonate at room temperature.


2014 ◽  
Vol 53 (42) ◽  
pp. 16164-16169 ◽  
Author(s):  
Ummadisetti Chandrakala ◽  
Rachapudi B. N. Prasad ◽  
Bethala L. A. Prabhavathi Devi

2008 ◽  
Vol 17 (2) ◽  
pp. 149-152 ◽  
Author(s):  
Ling Liu ◽  
Yuechang Zhao ◽  
Shan Gan ◽  
Xuezheng Liang ◽  
Jianguo Yang ◽  
...  

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