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 of Sulfonic Acid-Functionalized Zirconium Poly(Styrene-Phenylvinyl-Phosphonate)-Phosphate for Heterogeneous Epoxidation of Soybean Oil

Catalysts ◽  
2019 ◽  
Vol 9 (9) ◽  
pp. 710 ◽  
Author(s):  
Xiaochuan Zou ◽  
Xuyuan Nie ◽  
Zhiwen Tan ◽  
Kaiyun Shi ◽  
Cun Wang ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Soybean Oil ◽  
Sulfonic Acid ◽  
Solid Acid ◽  
Solid Acid Catalyst ◽  
Acid Catalyst ◽  
Thiol Group ◽  
Catalytic Performance ◽  
X Ray ◽  
Sulfonic Acid Groups

In this paper, a solid acid catalyst (ZPS–PVPA–SO3H) was prepared by anchoring thiol group on zirconium poly(styrene-phenylvinyl-phosphonate)-phosphate (ZPS–PVPA), followed by oxidation of thiol groups to obtain sulfonic acid groups. The solid acid catalyst was characterized by XPS, X-ray, EDS, SEM, and TG-DSC. The successful preparation of sulfonic acid-functionalized ZPS–PVPA was confirmed. Subsequently, the catalytic performance of ZPS–PVPA–SO3H was investigated in the epoxidation of soybean oil. The results demonstrated that ZPS–PVPA–SO3H can effectively catalyze epoxidation of soybean oil with TBHP as an oxidant. Moreover, there was no significant decrease in catalytic activity after 5 repeated uses of the ZPS–PVPA–SO3H. Interestingly, the ZPS–PVPA–SO3H was kept in 2 mol/L of HCl overnight after the end of the seventh reaction, and the catalytic activity was gradually restored during the eighth to tenth cycles.

Amorphous Carbon Bearing Sulfonic Acid Groups in Mesoporous Silica as a Selective Catalyst

2009 ◽  
Vol 21 (1) ◽  
pp. 186-193 ◽  
Author(s):  
Kiyotaka Nakajima ◽  
Mai Okamura ◽  
Junko N. Kondo ◽  
Kazunari Domen ◽  
Takashi Tatsumi ◽  
...  
Keyword(s):  
Mesoporous Silica ◽  
Amorphous Carbon ◽  
Sulfonic Acid ◽  
Selective Catalyst ◽  
Sulfonic Acid Groups

The Control of Attached Acid Groups on Sulfonated Polystyrene Nanospheres through the Design of Material Structure

2012 ◽  
Vol 182-183 ◽  
pp. 222-231
Author(s):  
Xiao Ning Tian ◽  
Zhong Qing Jiang ◽  
Li Li Zhang ◽  
Li Juan Luo ◽  
X.S. Zhao
Keyword(s):  
Acetic Acid ◽  
Sulfonic Acid ◽  
Acid Catalyst ◽  
Catalytic Performance ◽  
Esterification Reaction ◽  
Material Structure ◽  
Sulfonated Polystyrene ◽  
Uniform Size ◽  
Polystyrene Nanospheres ◽  
Sulfonic Acid Groups

Linearlinking polystyrene nanospheres (LPSs) with uniform size dispersion were synthesized by the emulsifier-free emulsion polymerization method. And with the adding of divinylbenzene (DVB) crosslinking polystyrene nanospheres (CPSs) was also prepared. It was found out that the partical size of prepared nanospheres changed with the continuous increment of added DVB. The sulfonation of resultant polystyrene nanospheres yielded solids with sulfonic acid groups. The relationship between nanospheres material structure and attached acid groups was investigated in detail. It was observed that the amount of added DVB is the main factor which can affect the amount and thermal stability of attached sulfonic acid groups. The catalytic performance of resultant solid acid catalysts was evaluated through the esterification reaction of methanol with acetic acid. Moreover, the prepared sulfonated polystyrene nanospheres show higher acetic acid conversion than the commercial one, therefore the sulfonated nanospheres could be an excellent potential replacement for liquid acid catalyst.

scholarly journals Periodic Mesoporous Organosilica Functionalized with Sulfonic Acid Groups as Acid Catalyst for Glycerol Acetylation

Materials ◽  
2013 ◽  
Vol 6 (8) ◽  
pp. 3556-3570 ◽  
Author(s):  
Els De Canck ◽  
Inmaculada Dosuna-Rodríguez ◽  
Eric Gaigneaux ◽  
Pascal Van Der Voort
Keyword(s):  
Sulfonic Acid ◽  
Acid Catalyst ◽  
Periodic Mesoporous Organosilica ◽  
Mesoporous Organosilica ◽  
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).

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