Preparation of Granular Carbon‐Based Solid Acid Catalyst from White Poplar and the Catalytic Activities in Esterification

2019 ◽  
Vol 4 (30) ◽  
pp. 8855-8859
Author(s):  
Hemiao Lu ◽  
Wei Tang ◽  
Jie Ji ◽  
Xuezheng Liang ◽  
Genzhong Ji
Keyword(s):  
Solid Acid ◽  
Solid Acid Catalyst ◽  
Acid Catalyst ◽  
White Poplar ◽  
Catalytic Activities ◽  
Carbon Based

Novel Carbon-based Solid Acid from Green Pistachio Peel as an Efficient Catalyst for the Chemoselective Acylation, Acetalization and Thioacetalization of Aldehydes, Synthesis of Biscoumarins and Antimicrobial Evaluation

2019 ◽  
Vol 7 (1) ◽  
pp. 55-80 ◽  
Author(s):  
Fatemeh Ghorbani ◽  
Seied Ali Pourmousavi ◽  
Hamzeh Kiyani
Keyword(s):  
Catalytic Activity ◽  
High Efficiency ◽  
Solid Acid ◽  
Solid Acid Catalyst ◽  
Acid Catalyst ◽  
Hydrothermal Carbonization ◽  
Biomass Waste ◽  
Efficient Catalyst ◽  
Solvent Free Conditions ◽  
Carbon Based

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.

scholarly journals Sulfonic-acid-functionalized carbon fiber from waste newspaper as a recyclable carbon based solid acid catalyst for the hydrolysis of cellulose

RSC Advances ◽  
2019 ◽  
Vol 9 (50) ◽  
pp. 28902-28907 ◽  
Author(s):  
Runming Gong ◽  
Zihao Ma ◽  
Xing Wang ◽  
Ying Han ◽  
Yanzhu Guo ◽  
...  
Keyword(s):  
Carbon Fiber ◽  
Sulfonic Acid ◽  
Solid Acid ◽  
Solid Acid Catalyst ◽  
Acid Catalyst ◽  
Cellulosic Materials ◽  
Hydrolysis Of Cellulose ◽  
Hydrolysis Of ◽  
Carbon Based

Waste newspaper is one of the most common cellulosic materials.

Production of furfural from xylose catalyzed by a novel calcium gluconate derived carbon solid acid in 1,4-dioxane

2020 ◽  
Vol 44 (19) ◽  
pp. 7968-7975 ◽  
Author(s):  
Tao Yang ◽  
Wenzhi Li ◽  
Mingxue Su ◽  
Yang Liu ◽  
Minghou Liu
Keyword(s):  
High Temperature ◽  
Calcium Gluconate ◽  
Room Temperature ◽  
Solid Acid ◽  
Solid Acid Catalyst ◽  
Acid Catalyst ◽  
Carbon Based

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.

Glycerol Valorization as Biofuel Additives by Employing a Carbon-Based Solid Acid Catalyst Derived from Glycerol

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

Acetalization of carbonyl compounds with 2,2,4-trimethyl-1,3-pentanedio catalyzed by novel carbon based solid acid catalyst

2008 ◽  
Vol 17 (2) ◽  
pp. 149-152 ◽  
Author(s):  
Ling Liu ◽  
Yuechang Zhao ◽  
Shan Gan ◽  
Xuezheng Liang ◽  
Jianguo Yang ◽  
...  
Keyword(s):  
Carbonyl Compounds ◽  
Solid Acid ◽  
Solid Acid Catalyst ◽  
Acid Catalyst ◽  
Carbon Based

Synthesis of biodiesel from cottonseed oil and methanol using a carbon-based solid acid catalyst

2009 ◽  
Vol 90 (7-8) ◽  
pp. 1002-1008 ◽  
Author(s):  
Qing Shu ◽  
Qiang Zhang ◽  
Guanghui Xu ◽  
Zeeshan Nawaz ◽  
Dezheng Wang ◽  
...  
Keyword(s):  
Solid Acid ◽  
Solid Acid Catalyst ◽  
Acid Catalyst ◽  
Cottonseed Oil ◽  
Carbon Based
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