Oxidative dimerization of anilines with heterogeneous sulfonic acid catalysts

2018 ◽  
Vol 20 (2) ◽  
pp. 382-386 ◽  
Author(s):  
Emanuele Paris ◽  
Franca Bigi ◽  
Daniele Cauzzi ◽  
Raimondo Maggi ◽  
Giovanni Maestri
Keyword(s):  
Sulfonic Acid ◽  
Acid Catalysts ◽  
Oxidative Dimerization ◽  
Sulfonic Acids

Sulfonic acids selectively catalyze the oxidative dimerization of anilines to azobenzenes without any unnecessary organics.

scholarly journals Pretreatment of Switchgrass for Production of Glucose via Sulfonic Acid-Impregnated Activated Carbon

Processes ◽  
2021 ◽  
Vol 9 (3) ◽  
pp. 504
Author(s):  
Yane Ansanay ◽  
Praveen Kolar ◽  
Ratna Sharma-Shivappa ◽  
Jay Cheng ◽  
Consuelo Arellano
Keyword(s):  
Activated Carbon ◽  
Sulfonic Acid ◽  
Solid Acid ◽  
Methanesulfonic Acid ◽  
Biofuel Production ◽  
Acid Catalysts ◽  
Effects Of Temperature ◽  
Carbon Catalysts ◽  
Hydrolysis Of

In the present research, activated carbon-supported sulfonic acid catalysts were synthesized and tested as pretreatment agents for the conversion of switchgrass into glucose. The catalysts were synthesized by reacting sulfuric acid, methanesulfonic acid, and p-toluenesulfonic acid with activated carbon. The characterization of catalysts suggested an increase in surface acidities, while surface area and pore volumes decreased because of sulfonation. Batch experiments were performed in 125 mL serum bottles to investigate the effects of temperature (30, 60, and 90 °C), reaction time (90 and 120 min) on the yields of glucose. Enzymatic hydrolysis of pretreated switchgrass using Ctec2 yielded up to 57.13% glucose. Durability tests indicated that sulfonic solid-impregnated carbon catalysts were able to maintain activity even after three cycles. From the results obtained, the solid acid catalysts appear to serve as effective pretreatment agents and can potentially reduce the use of conventional liquid acids and bases in biomass-into-biofuel production.

Effect of surface acidity on the catalytic activity and deactivation of supported sulfonic acids during dehydration of methanol to DME

2020 ◽  
Vol 44 (39) ◽  
pp. 16810-16820
Author(s):  
Rosanna Viscardi ◽  
Vincenzo Barbarossa ◽  
Daniele Mirabile Gattia ◽  
Raimondo Maggi ◽  
Giovanni Maestri ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Sulfonic Acid ◽  
Water Resistance ◽  
Surface Acidity ◽  
Acid Catalyst ◽  
Acid Sites ◽  
Sulfonic Acids ◽  
Effect Of Surface

Superiorty of the supported sulfonic acid catalyst in terms of the water resistance and efficiency of the acid sites compared to the commercial reference.

Silica-bound sulfonic acid catalysts

1989 ◽  
Vol 54 (23) ◽  
pp. 5437-5443 ◽  
Author(s):  
Rickey D. Badley ◽  
Warren T. Ford
Keyword(s):  
Sulfonic Acid ◽  
Acid Catalysts

Ball-Milling Synthesis of Sulfonyl Quinolines via Coupling of Haloquinolines with Sulfonic Acids

2021 ◽  
Author(s):  
Xiao-Wen Liu ◽  
Jia-Qian Wang ◽  
Hui Ma ◽  
Qi Zhu ◽  
Long-Yong Xie
Keyword(s):  
Ball Milling ◽  
Sulfonic Acid ◽  
Practical Approach ◽  
Sulfonic Acids ◽  
Metal Solvent

An efficient and practical approach for the synthesis of sulfonyl quinolines via ball milling promoted coupling of haloquinolines with sulfonic acid under metal-, solvent- and additive-free conditions has been developed....

Nanoparticulate and microporous solid acid catalysts bearing aliphatic sulfonic acids for biomass conversion

2019 ◽  
Vol 55 (26) ◽  
pp. 3697-3700 ◽  
Author(s):  
Kyoungil Cho ◽  
Sang Moon Lee ◽  
Hae Jin Kim ◽  
Yoon-Joo Ko ◽  
Seung Uk Son
Keyword(s):  
Solid Acid ◽  
Biomass Conversion ◽  
Solid Acid Catalysts ◽  
Acid Catalysts ◽  
Sulfonic Acids

Nano-sized and microporous solid acid catalysts were developed for fructose conversion to HMF.

scholarly journals Initial steps in the degradation of benzene sulfonic acid, 4-toluene sulfonic acids, and orthanilic acid in Alcaligenes sp. strain O-1

1990 ◽  
Vol 1 (1) ◽  
pp. 55-64 ◽  
Author(s):  
Thomas Thurnheer ◽  
Daniel Z�rrer ◽  
Otmar H�glinger ◽  
Thomas Leisinger ◽  
Alasdair M. Cook
Keyword(s):  
Sulfonic Acid ◽  
Sulfonic Acids ◽  
Benzene Sulfonic Acid ◽  
Orthanilic Acid

Amine Catalyzed Atomic Layer Deposition of (3-Mercaptopropyl)trimethoxysilane for the Production of Heterogeneous Sulfonic Acid Catalysts

2013 ◽  
Vol 25 (19) ◽  
pp. 3844-3851 ◽  
Author(s):  
David H. K. Jackson ◽  
Dong Wang ◽  
Jean Marcel R. Gallo ◽  
Anthony J. Crisci ◽  
Susannah L. Scott ◽  
...  
Keyword(s):  
Atomic Layer Deposition ◽  
Sulfonic Acid ◽  
Atomic Layer ◽  
Acid Catalysts ◽  
Layer Deposition

scholarly journals Syntheses of Biodiesel Precursors: Sulfonic Acid Catalysts for Condensation of Biomass-Derived Platform Molecules

ChemSusChem ◽  
2014 ◽  
Vol 7 (4) ◽  
pp. 1078-1085 ◽  
Author(s):  
Madhesan Balakrishnan ◽  
Eric R. Sacia ◽  
Alexis T. Bell
Keyword(s):  
Sulfonic Acid ◽  
Acid Catalysts
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