Efficient and stable solid acid catalysts synthesized from sulfonation of swelling mesoporous polydivinylbenzenes

• Published in: Journal of catalysis Vol. 271; no. 1; pp. 52 - 58
• Main Authors: Liu, Fujian, Meng, Xiangju, Zhang, Yonglai, Ren, Limin, Nawaz, Faisal, Xiao, Feng-Shou
• Format: Journal Article
• Language: English
• Published: Amsterdam Elsevier Inc 12-04-2010; Elsevier; Elsevier BV
• Subjects: Acids; Acylation; Catalysis; Catalysts; Chemical compounds; Chemical synthesis; Chemistry; Colloidal state and disperse state; Esterification; Exact sciences and technology; General and physical chemistry; Polydivinylbenzene; Porosity; Porous materials; Solid acid catalyst; Sulfonation; Swelling mesoporous polymer; Theory of reactions, general kinetics. Catalysis. Nomenclature, chemical documentation, computer chemistry; Sulfonation; Swelling mesoporous polymer; Solid acid catalyst; Polydivinylbenzene; Esterification; Acylation; Binary compound; Lauric acid; Adsorption isotherm; Alcohol; Hexanoic acid; Porous material; Silica; Solid; Carboxylic acid; Chlorides; Alkanol; Desorption isotherm; Ion exchange resin; Ethanol; Swelling; Polymer; Nitrogen; Mesoporosity; Heterogeneous catalysis; Acids; Saturated fatty acid; Acetic acid; Surface area; Cyclohexanol; Acid base titration; Catalyst
• ISSN: 0021-9517; 1090-2694
• DOI: 10.1016/j.jcat.2010.02.003

Efficient and stable solid catalysts with good catalytic properties in esterifications and acylation were successfully synthesized from sulfonation of swelling mesoporous polydivinylbenzenes (PDVB) by chlorosulfonic acid in CH
2Cl
2.
Efficient and stable solid acid catalysts, sulfonic groups functional swelling mesoporous polydivinylbenzenes (PDVB-
x-SO
3Hs), were synthesized from sulfonation of swelling mesoporous polydivinylbenzenes (PDVB-
xs) by chlorosulfonic acid in CH
2Cl
2. Nitrogen adsorption–desorption isotherms showed that PDVB-
x-SO
3Hs have high surface area and abundant mesoporosity. Elemental analysis and acid–base titration techniques showed that PDVB-
x-SO
3Hs have high concentration of sulfonic groups. Esterifications of acetic acid with cyclohexanol, hexanoic acid with ethanol, lauric acid with ethanol and acylation of anisole with acetyl chloride showed that PDVB-
x-SO
3Hs are more active than arenesulfonic, propyl-sulfonic groups functional mesoporous silicas (SBA-15-Ar-SO
3H, SBA-15-Pr-SO
3H) and strongly acidic ion-exchange resin (Amberlyst 15). The superior performance of PDVB-
x-SO
3Hs is attributed to their unique features including large surface area, abundance of mesoporosity as well as high content of sulfonic groups.