Synthesis and characterization of functionalized alumina catalysts with thiol and sulfonic groups and their performance in producing 5-hydroxymethylfurfural from fructose

被引:38
作者
Solis Maldonado, Carolina [1 ]
Rivera De la Rosa, Javier [1 ,2 ]
Lucio-Ortiz, Carlos J. [1 ]
Valente, Jaime S. [3 ]
Castaldi, Marco J. [4 ]
机构
[1] UANL, Fac Ciencias Quim, Ave Univ S-N Cd Univ, San Nicolas De Los Garza 64451, Nuevo Leon, Mexico
[2] UANL, CIIDIT, Km 10 Nueva Carretera Aeropuerto Int Monterrey, Apodaca 66600, Nuevo Leon, Mexico
[3] Inst Mexicano Petr, Eje Cent Lazaro Cardenas 152, Mexico City 07730, DF, Mexico
[4] CUNY City Coll, 140th St Convent Ave, New York, NY 10031 USA
关键词
Alumina; Acid catalysts; Dehydration fructose; Hydroxymethylfurfural; SOL-GEL SYNTHESIS; LIGNOCELLULOSIC BIOMASS; IONIC LIQUIDS; CARBOHYDRATE DEHYDRATION; SELECTIVE DEHYDRATION; MECHANICAL-PROPERTIES; MESOPOROUS SBA-15; SURFACE-ACIDITY; GAMMA-ALUMINA; CONVERSION;
D O I
10.1016/j.fuel.2016.10.004
中图分类号
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号
0807 ; 0820 ;
摘要
5-Hydroxymethylfurfural (HMF) has been identified as a potential candidate for biofuels and a highpotential intermediate chemical compound. The obtention of HMF from fructose is efficiently carried out using acid catalysts. In this work, a new catalyst of alumina synthesized by sol-gel as support was bifunctionalized with thiol (-SH) and sulfonic (SO3 ) groups by the grafting method and compared with other supports, i.e., synthesized boehmite and commercial alumina. The 3-mercaptopropyl-trimethoxysi lane was utilized as a source of the thiol group to promote fructose tautomerization to its furanose form. The sulfonic group was obtained from 1,3-propanesultone, which carries out the dehydration of the fructose molecule. The prepared bifunctionalized catalysts were tested in the fructose dehydration reaction. The functional groups were identified through Fourier transform infrared spectroscopy (FTIR) as the primary characterization. The type of acid site was identified by Fourier transform infrared spectroscopy (-pyridine (FTIR-py)) and quantified by temperature-programmed desorption of ammonia (TPD-NH3). The molecular structures of thiol and the sulfonic groups anchored on the supports were resolved by nuclear magnetic resonance with cross-polarization (CP) and magic angle spinning (MAS)CP-MAS-NMR). The bifunctionalized catalyst of alumina synthesized by sol-gel, being a very competitive material, reached a 55% selectivity to HMF at a 72% conversion at 453 K. (C) 2016 Elsevier Ltd. All rights reserved.
引用
收藏
页码:134 / 144
页数:11
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