Sulfonic Acid Anchored Heterogeneous Acid‐Catalyst DIC A T‐3 for Conversion of Xylose into Furfural in Biphasic Solvent System

2020 ◽  
Vol 5 (2) ◽  
pp. 916-923
Author(s):  
Hitesh S. Pawar
Keyword(s):  
Sulfonic Acid ◽  
Acid Catalyst ◽  
Solvent System ◽  
Heterogeneous Acid Catalyst

sp3-Linked Amorphous Carbon with Sulfonic Acid Groups as a Heterogeneous Acid Catalyst

ChemSusChem ◽  
2012 ◽  
Vol 5 (9) ◽  
pp. 1841-1846 ◽  
Author(s):  
Satoshi Suganuma ◽  
Kiyotaka Nakajima ◽  
Masaaki Kitano ◽  
Shigenobu Hayashi ◽  
Michikazu Hara
Keyword(s):  
Amorphous Carbon ◽  
Sulfonic Acid ◽  
Acid Catalyst ◽  
Heterogeneous Acid Catalyst ◽  
Sulfonic Acid Groups

scholarly journals Synthesis and Characterization of Polystyrene Sulfonic Acid from Expanded Polystyrene Foam as a Catalyst in the Synthesis of Triacetin

2021 ◽  
Vol 21 (5) ◽  
pp. 1111
Author(s):  
Renita Manurung ◽  
Rosdanelli Hasibuan ◽  
Fatimah Batubara ◽  
Handy Inarto ◽  
Alwi Gery Agustan Siregar ◽  
...  
Keyword(s):  
Sulfonic Acid ◽  
Acid Catalyst ◽  
Expanded Polystyrene ◽  
Esterification Reaction ◽  
X Ray Diffraction ◽  
Expanded Polystyrene Foam ◽  
Silver Sulfate ◽  
Heterogeneous Acid Catalyst ◽  
Polystyrene Sulfonic Acid

In Indonesia, the composition of waste has gradually changed over time. To reduce expanded polystyrene (EPS) foam waste, we converted it into a heterogeneous acid catalyst, namely Polystyrene Sulfonic Acid (PSSA). The catalyst was then used in an esterification reaction to generate triacetin. In this research, the synthesis of PSSA was performed using a sulfonation reaction with silver sulfate (Ag2SO4) as the catalyst. Based on FTIR analysis, the sulfonation reaction was successful. The use of 0.5% and 1% catalysts led to a significant increase in the degree of sulfonation of PSSA, while there was a relatively constant increase when using 1.5–2.5% catalysts. The highest degree of sulfonation (78.63%) was achieved when the reaction was performed using 2% Ag2SO4 catalyst for 25 min. The PSSA with the highest degree of sulfonation was characterized using X-Ray Diffraction (XRD), SEM-EDX, and BET-BJH. This PSSA had a semi-crystalline structure with a crystallinity of 73.83%, a particle size of 1.75 nm, mesoporous pores with a radius of 16.984 Å, and a sulfur content of 15% (% mass).

Sulfonic acid functionalized hyper-cross-linked polymer: An efficient heterogeneous acid catalyst for the synthesis of N-containing bisphosphonates

2019 ◽  
Vol 126 ◽  
pp. 15-20 ◽  
Author(s):  
Sirigireddy Sudharsan Reddy ◽  
Reddi Mohan Naidu Kalla ◽  
Anuraj Varyambath ◽  
Il Kim
Keyword(s):  
Sulfonic Acid ◽  
Acid Catalyst ◽  
Heterogeneous Acid Catalyst

Dilute sulfonic acid post functionalized metal organic framework as a heterogeneous acid catalyst for esterification to produce biodiesel

Fuel ◽  
2020 ◽  
Vol 266 ◽  
pp. 117149 ◽  
Author(s):  
Fengsheng Liu ◽  
Xiaoling Ma ◽  
Hui Li ◽  
Yangyang Wang ◽  
Ping Cui ◽  
...  
Keyword(s):  
Sulfonic Acid ◽  
Metal Organic Framework ◽  
Acid Catalyst ◽  
Heterogeneous Acid Catalyst ◽  
Metal Organic ◽  
Organic Framework

An Efficient Synthesis of 2-Substituted Quinazolin-4(3H)-ones by Using Recyclable Wang Resin Supported Sulfonic Acid Catalyst

2020 ◽  
Vol 17 ◽  
Author(s):  
Kalyani K. ◽  
Srinivasa Reddy Kallam
Keyword(s):  
Sulfonic Acid ◽  
Functional Group ◽  
Acid Catalyst ◽  
Sulphonic Acid ◽  
Isatoic Anhydride ◽  
Efficient Synthesis ◽  
Wang Resin ◽  
Polymer Supported ◽  
High Yields

Abstract:: An efficient synthesis of 2-substituted Quinazolin-4(3H)-ones has been developed from isatoic anhydride with various amidoximes by using recyclable polymer supported sulphonic acid catalyst. Excellent functional group compatibil-ity and high yields are the important features of this protocol.

An efficient heterogeneous acid catalyst derived from waste ginger straw for biodiesel production

2021 ◽  
Author(s):  
Hewei Yu ◽  
Yunlong Cao ◽  
Heyao Li ◽  
Gaiju Zhao ◽  
Xingyu Zhang ◽  
...  
Keyword(s):  
Acid Catalyst ◽  
Biodiesel Production ◽  
Heterogeneous Acid Catalyst
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