Microwave-assisted hydrolysis of crystalline cellulose catalyzed by biomass char sulfonic acids

Abstract

The development of an environmentally benign process for the hydrolysis of cellulose into reducing sugars can be one of the key technologies for making full use of cellulosic biomass in the future. Here, a biomass char sulfonic acid (BC-SO 3 H)-catalyzed hydrolysis of cellulose in water was achieved under microwave irradiation. The BC-SO 3 H catalysts prepared cheaply from natural bamboo, cotton and starch, showed a much higher turnover number (TON, 1.33-1.73) for this reaction compared to a dilute H 2 SO 4 solution (TON, 0.02), which was likely due to their strong affinity to b-1,4-glycosidic bonds of cellulose. In addition, microwave irradiation played key roles in activating cellulose molecules and strengthening particle collision, which can lead to a remarkable acceleration effect on this heterogeneously catalytic process.

Production of 5-Hydroxymethylfurfural from Fructose Catalyzed by Sulfonated Bamboo-Derived Carbon Prepared by Simultaneous Carbonization and Sulfonation

“…X-ray photoelectron spectroscopy (XPS) analysis was performed on a Thermo Scientific Escalab 250Xi instrument using an Al Kα source to excite the photoelectrons from the sample. The densities of every functional group were measured by a titration method according to literature (Wu et al 2010). The Brunauer-Emmett-Teller (BET) specific surface areas of catalysts were determined by N2 adsorption at 77 K using a Micromeritics ASAP2020M+C instrument.…”

Production of 5-hydroxymethylfurfural from glucose catalyzed by hydroxyapatite supported chromium chloride

“…This process would be preferable in order to realize green and sustainable chemistry (Wu et al, 2010;Salinas et al, 2010).…”

Novel hybrid process for the conversion of microcrystalline cellulose to value-added chemicals: part 1: process optimization

“…In this manner, conversion of different kinds of biomass sources to high value-added chemicals has been investigated in literature for last decades Electronic supplementary material The online version of this article (doi:10.1007/s10570-016-1054-3) contains supplementary material, which is available to authorized users. (Wu et al 2010;Yan et al 2010). So far, mineral acids (Muranaka et al 2014), solid acid catalysts (Liu et al 2015;Zi et al 2015), enzymes (Annamalai et al 2014;Badgujar and Bhanage 2016), subcritical water (Saito et al 2009) have been used to hydrolyze biomass into value-added chemicals such as Levulinic acid, Hydroxymethylfurfural (5-HMF), Furfural.…”