High-temperature synthesis of magnetically active and SO3H-functionalized ordered mesoporous carbon with good catalytic performance

• Published in: Catalysis today Vol. 186; no. 1; pp. 115 - 120
• Main Authors: Liu, Fujian, Sun, Jing, Sun, Qi, Zhu, Longfeng, Wang, Liang, Meng, Xiangju, Qi, Chenze, Xiao, Feng-Shou
• Format: Journal Article Conference Proceeding
• Language: English
• Published: Amsterdam Elsevier B.V 01-06-2012; Elsevier
• Subjects: acetic acid; benzaldehyde; butanol; carbon; Catalysis; Catalyst recyclability; catalysts; catalytic activity; cations; Chemistry; Colloidal state and disperse state; condensation; esterification; ethylene glycol; Exact sciences and technology; General and physical chemistry; Heterogeneous acidic catalysts; magnetic fields; Magnetically active; nanoparticles; Ordered mesoporous carbon; Physical and chemical studies. Granulometry. Electrokinetic phenomena; Porous materials; sulfuric acid; surfactants; Theory of reactions, general kinetics. Catalysis. Nomenclature, chemical documentation, computer chemistry; transmission electron microscopy; X-ray diffraction; Catalyst recyclability; Heterogeneous acidic catalysts; Magnetically active; Ordered mesoporous carbon; Nanoparticle; Ethylene; Iron; Superparamagnetism; High temperature; Surfactant; Condensation; Porous material; Sulfuric acid; Synthesis; Sulfonation; Copolymer; Resins; Catalytic reaction; Benzaldehyde; Carbon; X ray diffraction; Esterification; Mesoporosity; Heterogeneous catalysis; Transmission electron microscopy; Pore; Isotherm; Butanol; Acetic acid; Surface area; Cyclohexanol; Catalyst; Hydrothermal condition; Glycol
• ISSN: 0920-5861; 1873-4308
• DOI: 10.1016/j.cattod.2011.11.011

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► Magnetically active and SO3H-funcationalized mesoporous carbon is synthesized. ► SO3H-funcationalized mesoporous carbon is catalytically active and recyclable. ► Magnetically active property is favorable for separating the catalysts. ► Combination of good catalytic performance with magnetic activity is important.
Magnetically active and SO3H-functionalized ordered mesoporous resin and carbon (MOMR-SO3H, MOMC-SO3H) were successfully prepared by high-temperature hydrothermal synthesis from resol, copolymer surfactant, and iron cations at 180°C, followed by sulfonation from sulfuric acid fuming. X-ray diffraction patterns show that MOMR-SO3H and MOMC-SO3H have ordered hexagonal mesoporous symmetry. N2 isotherms indicate that these samples have uniform and opened mesopores, high surface areas (335–591m2/g), and large pore volumes (0.34–0.35cm3/g). Transmission electron microscopy shows that iron nanoparticles, which are superparamagnetic in nature, are highly dispersed in MOMC-SO3H sample. Catalytic tests show that MOMC-SO3H is highly active and excellently recyclable in esterification of acetic acid with butanol, esterification of acetic acid with cyclohexanol, and condensation of benzaldehyde with ethylene glycol. More interestingly, MOMC-SO3H catalyst is magnetically active, showing potential applications for separating catalysts by a magnetic field in the future.