Synthesis of sulfonic acid-functionalized Fe3O4@C nanoparticles as magnetically recyclable solid acid catalysts for acetalization reaction

2014 ◽  
Vol 43 (3) ◽  
pp. 1220-1227 ◽  
Author(s):  
Fang-Cai Zheng ◽  
Qian-Wang Chen ◽  
Lin Hu ◽  
Nan Yan ◽  
Xiang-Kai Kong
Keyword(s):  
Sulfonic Acid ◽  
Solid Acid ◽  
Solid Acid Catalysts ◽  
Acid Catalysts ◽  
Acetalization Reaction

Sulfonic acid-functionalized core-shell Fe3O4@carbon microspheres as magnetically recyclable solid acid catalysts

2020 ◽  
Author(s):  
Chenyi Yuan ◽  
Xiqing Wang ◽  
Xuanyu Yang ◽  
Abdulaziz A. Alghamdi ◽  
Fahad A. Alharthi ◽  
...  
Keyword(s):  
Sulfonic Acid ◽  
Solid Acid ◽  
Solid Acid Catalysts ◽  
Core Shell ◽  
Acid Catalysts ◽  
Carbon Microspheres

scholarly journals Pre-treatment of biomasses using magnetised sulfonic acid catalysts

2017 ◽  
Vol 48 (2) ◽  
pp. 117 ◽  
Author(s):  
Yane Ansanay ◽  
Praveen Kolar ◽  
Ratna Sharma-Shivappa ◽  
Jay Cheng ◽  
Sunkyu Park ◽  
...  
Keyword(s):  
Sulfonic Acid ◽  
Panicum Virgatum ◽  
Solid Acid ◽  
Solid Acid Catalyst ◽  
Acid Catalyst ◽  
Solid Acid Catalysts ◽  
Acid Catalysts ◽  
Miscanthus Giganteus ◽  
Panicum Virgatum L ◽  
Pre Treatment

There is a significant interest in employing solid acid catalysts for pre-treatment of biomasses for subsequent hydrolysis into sugars, because solid acid catalysts facilitate reusability, high activity, and easier separation. Hence the present research investigated pretreatment of four lignocellulosic biomasses, namely Switchgrass (Panicum virgatum L ‘Alamo’), Gamagrass (Tripsacum dactyloides), Miscanthus (Miscanthus × giganteus) and Triticale hay (Triticale hexaploide Lart.) at 90°C for 2 h using three carbon-supported sulfonic acid catalysts. The catalysts were synthesized via impregnating p-Toluenesulfonic acid on carbon (regular) and further impregnated with iron nitrate via two methods to obtain magnetic A and magnetic B catalysts. When tested as pre-treatment agents, a maximum total lignin reduction of 17.73±0.63% was observed for Triticale hay treated with magnetic A catalyst. Furthermore, maximum glucose yield after enzymatic hydrolysis was observed to be 203.47±5.09 mg g–1 (conversion of 65.07±1.63%) from Switchgrass treated with magnetic A catalyst. When reusability of magnetised catalysts were tested, it was observed that magnetic A catalyst was consistent for Gamagrass, Miscanthus × Giganteus and Triticale hay, while magnetic B catalyst was found to maintain consistent yield for switchgrass feedstock. Our results suggested that magnetised solid acid catalyst could pre-treat various biomass stocks and also can potentially reduce the use of harsh chemicals and make bioenergy processes environment friendly.

Facile Preparation of Ionic Liquid Functionalized Magnetic Nano-Solid Acid Catalysts for Acetalization Reaction

2010 ◽  
Vol 135 (1-2) ◽  
pp. 159-164 ◽  
Author(s):  
Ping Wang ◽  
AiGuo Kong ◽  
WenJuan Wang ◽  
HaiYan Zhu ◽  
YongKui Shan
Keyword(s):  
Ionic Liquid ◽  
Solid Acid ◽  
Solid Acid Catalysts ◽  
Acid Catalysts ◽  
Facile Preparation ◽  
Acetalization Reaction

Conversion of fructose into 5-hydroxymethylfurfural catalyzed by recyclable sulfonic acid-functionalized metal–organic frameworks

2014 ◽  
Vol 16 (5) ◽  
pp. 2490-2499 ◽  
Author(s):  
Jinzhu Chen ◽  
Kegui Li ◽  
Limin Chen ◽  
Ruliang Liu ◽  
Xing Huang ◽  
...  
Keyword(s):  
Sulfonic Acid ◽  
Solid Acid ◽  
Metal Organic Frameworks ◽  
Solid Acid Catalysts ◽  
Acid Catalysts ◽  
Metal Organic

Sulfonic acid-functionalized metal–organic frameworks are efficiently used as recyclable solid acid catalysts for the fructose-to-HMF transformation.

Novel Solid Acid Catalysts: Sulfonic Acid Group-Functionalized Mesostructured Polymers

2007 ◽  
Vol 17 (14) ◽  
pp. 2455-2461 ◽  
Author(s):  
R. Xing ◽  
N. Liu ◽  
Y. Liu ◽  
H. Wu ◽  
Y. Jiang ◽  
...  
Keyword(s):  
Sulfonic Acid ◽  
Solid Acid ◽  
Acid Group ◽  
Solid Acid Catalysts ◽  
Acid Catalysts ◽  
Sulfonic Acid Group

Al-coordination polymer-derived nanoporous nitrogen-doped carbon microfibers as metal-free catalysts for oxygen electroreduction and acetalization reactions

2015 ◽  
Vol 3 (47) ◽  
pp. 23716-23724 ◽  
Author(s):  
Zhen Han ◽  
Youyi Yu ◽  
Yongbo Zhang ◽  
Bing Dong ◽  
Aiguo Kong ◽  
...  
Keyword(s):  
Solid Acid ◽  
Thermal Conversion ◽  
Oxygen Electroreduction ◽  
Solid Acid Catalysts ◽  
Acid Catalysts ◽  
Nitrogen Doped ◽  
Metal Free ◽  
Acetalization Reaction ◽  
Carbon Microfibers ◽  
Nitrogen Doped Carbon

Nanoporous nitrogen-doped carbon microfibers were prepared by thermal conversion of Al-DTPA coordination polymers, which could be used as efficient oxygen electroreduction catalysts and to prepare porous solid acid catalysts for the acetalization reaction.

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