A feasible process for furfural production from the pre-hydrolysis liquor of corncob via biochar catalysts in a new biphasic system

Deng, Aojie; Lin, Qixuan; Yan, Yuhuan; Li, Huiling; Ren, Junli; Liu, Chuanfu; Sun, Run‐Cang

doi:10.1016/j.biortech.2016.06.002

Cited by 104 publications

(44 citation statements)

References 35 publications

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“…For xylose, there was a 12.62% (2.62%/77.02%, A/O) increase when replaced H 2 O with saturated NaCl solution, revealing that the addition of NaCl can greatly improve the partitioning of furfural into the organic phase. This result was consistent with the reported in literatures [12,32]. On the other hand, the furfural yield of xylan in the saturated NaCl medium decreased to 62.28% (1.04%/61.24%, A/O), which may be attributed to the high concentration of Cl − ions.…”

Section: Effect Of Saturated Nacl Solution In the Aqueous Phasesupporting

confidence: 82%

“…The addition of NaCl in the aqueous phase of the biphasic systems could improve the furfural formation rate in some catalytic systems [12,32] because of its effective separation and the improvement of extracting efficiency of the organic layer [33]. Thus, the saturated NaCl aqueous solution substituted for water phase in the biphasic system was investigated (Figure 5d).…”

Section: Effect Of Saturated Nacl Solution In the Aqueous Phasementioning

confidence: 99%

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SO42−/Sn-MMT Solid Acid Catalyst for Xylose and Xylan Conversion into Furfural in the Biphasic System

Lin

Wang

et al. 2017

Catalysts

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Abstract:A sulphated tin ion-exchanged montmorillonite (SO 4 2− /Sn-MMT) was successfully prepared by the ion exchange method of montmorillonite (MMT) with SnCl 4 , followed by the sulphation. This catalysis was applied as a solid acid catalyst for the heterogeneous catalytic transformations of xylose and xylan into furfural in the bio-based 2-methyltetrahydrofuran/H 2 O biphasic system. These prepared catalysts were characterized by X-ray powder diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), temperature programmed desorption of ammonia (NH 3 -TPD), pyridine adsorbed Fourier transform infrared spectroscopy (Py-FTIR), element analysis (EA) and Brunauer-Emmett-Teller (BET) method. Their catalytic performance for xylose and xylan into furfural was also investigated. The reaction parameters such as the initial xylose and xylan concentration, the amounts of catalyst, the organic-to-aqueous phase volume ratio, the reaction temperature and time were studied to optimize the reaction conditions. Results displayed that SO 4 2− /Sn-MMT contained both Brønsted acid and Lewis acid sites, and SO 4 2− ions were contributive to the formation of stronger Brønsted acid sites, which could improve the reaction efficiency. Reaction parameters had significant influence on the furfural production. The substitution of water by the saturated NaCl solution in the aqueous phase also had an important effect on the xylose and xylan conversion. The highest furfural yields were achieved up to 79.64% from xylose and 77.35% from xylan under the optimized reaction conditions (160 • C, 120 min; 160 • C, 90 min). Moreover, the prepared catalyst was stable and was reused five times with a slight decrease (10.0%) of the furfural yield.

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Section: Effect Of Saturated Nacl Solution In the Aqueous Phasesupporting

confidence: 82%

Section: Effect Of Saturated Nacl Solution In the Aqueous Phasementioning

confidence: 99%

SO42−/Sn-MMT Solid Acid Catalyst for Xylose and Xylan Conversion into Furfural in the Biphasic System

Lin

Wang

et al. 2017

Catalysts

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“…demonstrated the use of a dichloromethane/H 2 O biphasic system to convert the xylose in concentrated pre‐hydrolysis liquor (CPHL) of corncob to furfural. Using bio‐char catalysts, CPHL containing 5 wt% xylose resulted in 81 % furfural yield in the modified biphasic system compared to only 61 % furfural without NaCl (170 °C; 1 h) . In another study with carbon‐based catalysts, sulfonated nano‐sized diamond powder was used by Delbecq et al.…”

Section: Heterogenous Catalystsmentioning

confidence: 67%

“…Although much progress has been made in upgrading the sugar fractions to fuels and chemicals, obtaining high yields of platform chemicals economically remains a challenge. Using biphasic systems for biomass hydrolysis is a potential solution that has many advantages since solvents can prevent furan polymerization, concentrate products by using a lower volume of solvent, and enhance biomass solubility, which leads to less solids remaining after reaction and potentially faster reactions…”

Section: Introductionmentioning

confidence: 99%

Conversion of Sugars and Biomass to Furans Using Heterogeneous Catalysts in Biphasic Solvent Systems

et al. 2018

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Within the last decade, interest in using biphasic systems for producing furans from biomass has grown significantly. Biphasic systems continuously extract furans into the organic phase, which prevents degradation reactions and potentially allows for easier separations of the products. Several heterogeneous catalyst types, including zeolites, ion exchange resins, niobium‐based, and others, have been used with various organic solvents to increase furan yields from sugar dehydration reactions. In this minireview, we summarized the use of heterogeneous catalysts in biphasic systems for furfural and 5‐hydroxymethylfurfural production from the past five years, highlighting trends in chemical and physical properties that effect catalytic activity. Additionally, the selection of an organic solvent for a biphasic system is extremely important and we review and discuss properties of the most commonly used organic solvents.

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“…The catalytic coproduction of furfural and the important byproduct 5 hydroxymethyl furfural, 5HMF, has been investigated to improve the economic feasibility of the production process [23][24][25][26][27] . Metal oxides as solid acid catalysts and sulfonated biomass carbon materials have increasingly attracted researchers' attention, due to their strong acidity, high active surface area and low temperature sensitivity [28] . Furthermore, furfural was produced using alginic acid derived from macroalgae over Amberlyst-15 solid acid catalyst [29] .…”

Section: Introductionmentioning

confidence: 99%

Hydrolysis of Palm Tree Midribs with Hydrochloric Acid for Furfural Formation

Bamufleh¹

2018

JKAU Earth Sci

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Waste material samples as pentosan source of midribs from the Sukkaria date palm tree were collected from different Saudi Arabian agricultural areas, and hydrolyzed using hydrochloric acid (HCl) to produce furfural at different temperatures, liquid to solid ratios (LSR) and acid concentrations. A maximum furfural production with a concentration of 755 gm/m3 (72% furfural yield) was achieved, which was close to the theoretical yield at 15 wt% HCl and 100 ml/g LSR at 120°C. The kinetic model for the pentosan fractional hydrolysis towards the production of furfural was previously proposed and developed. Regression analysis of the experimental data was successfully performed using Ploymath software with acceptable predictions precision and regression coefficients of R2 ≥0.96. Furthermore, regressed rate constants of each reaction step in the proposed kinetic model were developed using modified Arrhenius model with an acceptable accuracy of R2 ≥0.96. Experimental data showed that hydrolysis using hydrochloric acid could achieve higher furfural yields with lower reaction times in comparison with sulfuric acid hydrolysis, due to lower activation energy of the involved steps.

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A feasible process for furfural production from the pre-hydrolysis liquor of corncob via biochar catalysts in a new biphasic system

Cited by 104 publications

References 35 publications

SO42−/Sn-MMT Solid Acid Catalyst for Xylose and Xylan Conversion into Furfural in the Biphasic System

SO42−/Sn-MMT Solid Acid Catalyst for Xylose and Xylan Conversion into Furfural in the Biphasic System

Conversion of Sugars and Biomass to Furans Using Heterogeneous Catalysts in Biphasic Solvent Systems

Hydrolysis of Palm Tree Midribs with Hydrochloric Acid for Furfural Formation

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