Reactions of aqueous glucose solutions over solid-acid Y-zeolite catalyst at 110-160 .degree.C

Lourvanij, Khavinet; Rorrer, Gregory L.

doi:10.1021/ie00013a002

Cited by 122 publications

(132 citation statements)

References 13 publications

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“…In contrast, reactions of water-soluble sugars with solid acid catalysts have been extensively studied [8,14,65,78,87,88,115]. In general, the heterogeneous catalytic system could convert water-soluble sugars to organic acids by shape-selective, solid acid-catalyzed processes at low temperatures.…”

Section: Heterogeneous Catalystsmentioning

confidence: 99%

“…In general, the heterogeneous catalytic system could convert water-soluble sugars to organic acids by shape-selective, solid acid-catalyzed processes at low temperatures. Lourvanij and Rorrer [87] reacted aqueous solutions of glucose (12 wt%) with HY-zeolite powder in a well-mixed batch reactor at temperatures ranging from 110 to 160°C and catalyst concentrations ranging from 2 to 20 g/150 mL. Under these conditions, 15-20 % molar yields of levulinic acid and *30 % formic acid were obtained.…”

Section: Heterogeneous Catalystsmentioning

confidence: 99%

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Catalytic Conversion of Lignocellulosic Biomass to Value-Added Organic Acids in Aqueous Media

Lin

Liu

et al. 2014

Green Chemistry and Sustainable Technology

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The transition from today's fossil-based economy to a sustainable economy based on renewable biomass is driven by the concern of climate change and anticipation of dwindling fossil resources. Although biofuels are the central theme of the transition, biomass resources cannot completely replace petroleum. It is projected that biofuels can only supply up to 30 % of today's transportation fuel market even if all available domestic biomass resources are used for the production of liquid fuels. Therefore, transformation of biomass into high-value-added chemicals is advantageous to secure optimal use of the abundant, but limited, biomass resources from the economical and ecological perspective. Industry is increasingly considering bio-based chemical production as an attractive area for investment. The potential for chemical and polymer production from biomass is substantial. The US Department of Energy recently issued a report which listed 12 chemical building blocks considered as potential building blocks for the future. Organic acids (e.g., succinic, lactic, levulinic acid, etc.) are among the widely spread ''platform-molecules,'' which may be further converted into possibly derivable high-value-added chemicals. The transition from a fossil chemical industry to a renewable chemical industry will likewise depend on our ability to focus research and development efforts on the most promising alternatives. In this chapter, we review the emerging technologies on catalytic conversion of biomass to value-added organic acids in aqueous media.

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Section: Heterogeneous Catalystsmentioning

confidence: 99%

Section: Heterogeneous Catalystsmentioning

confidence: 99%

Catalytic Conversion of Lignocellulosic Biomass to Value-Added Organic Acids in Aqueous Media

Lin

Liu

et al. 2014

Green Chemistry and Sustainable Technology

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“…The heterogenous catalytic system has several advantages, including selective, recyclable and regeneration abilities, and it is also easier to separate (Chen et al 2011;Rackemann and Doherty 2011). However, low levulinic acid yields were reported previously under prolonged reaction time and high reaction temperature (Jow et al 1987;Lourvanij and Rorrer 1993;Zeng et al 2010). Therefore, further studies on better reactive catalysts are still needed to comprehend the catalytic activities for the formation of levulinic acid from biomass sources.…”

Section: Introductionmentioning

confidence: 99%

Catalytic Conversion of Lignocellulosic Biomass to Levulinic Acid in Ionic Liquid

Ya’aini

Amin

2013

BioResources

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The catalytic conversion of lignocellulosic biomass to levulinic acid in ionic liquid, [EMIM][Cl] was conducted using a hybrid catalyst. The hybrid catalyst (1:1 ratio) with equal CrCl 3 and HY zeolite weight ratios was synthesized using a wet impregnation method. Initially, optimization of cellulose as a model compound was carried out using two-level full factorial design ( 2 3 ) with two centre points. Under optimum process conditions, 46.0% of levulinic acid yield was produced from cellulose. Subsequently, utilization of lignocellulosic biomass demonstrated 15.5% and 15.0% of levulinic acid yield from empty fruit bunch (EFB) and kenaf, respectively, at the optimum conditions. Meanwhile, in the presence of ionic liquid under the same process conditions, 20.0% and 17.0% of levulinic acid were obtained for EFB and kenaf, respectively. The results indicated that ionic liquid could disrupt the covalent linkages between the biomass structures and dissolved the hollocellulose. This allowed the hollocellulose chains, accessible to the chemical transformation, to react and produce levulinic acid in presence of the hybrid catalyst. This study demonstrated that the combination of hybrid catalyst and ionic liquid has the potential to be applied for biomass conversion to levulinic acid under adequate process conditions.

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“…An increase in temperature appears beneficial for the rate of conversion of xylose but the furfural decreases when the reaction temperature increases above 160 °C. This might be due to the coke deposits on the outer surface of the particle or within the pores, which leads to a decrease in catalyst acidity [26].…”

Section: C-nmrmentioning

confidence: 99%

Selective Preparation of Furfural from Xylose over Sulfonic Acid Functionalized Mesoporous Sba-15 Materials

Shi

et al. 2011

Energies

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Sulfonic acid functionalized mesoporous SBA-15 materials were prepared using the co-condensation and grafting methods, respectively, and their catalytic performance in the dehydration of xylose to furfural was examined. SBA-15-SO 3 H(C) prepared by the co-condensation method showed 92-95% xylose conversion and 74% furfural selectivity, and 68-70% furfural yield under the given reaction conditions. The deactivation and regeneration of the SBA-15-SO 3 H(C) catalyst for the dehydration of xylose was also investigated. The results indicate that the used and regeneration catalysts retained the SBA-15 mesoporous structure, and the S content of SBA-15-SO 3 H(C) almost did not change. The deactivation of the catalysts is proposed to be associated with the accumulation of byproducts, which is caused by the loss reaction of furfural. After regeneration by H 2 O 2 , the catalytic activity of the catalyst almost recovered.

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Reactions of aqueous glucose solutions over solid-acid Y-zeolite catalyst at 110-160 .degree.C

Cited by 122 publications

References 13 publications

Catalytic Conversion of Lignocellulosic Biomass to Value-Added Organic Acids in Aqueous Media

Catalytic Conversion of Lignocellulosic Biomass to Value-Added Organic Acids in Aqueous Media

Catalytic Conversion of Lignocellulosic Biomass to Levulinic Acid in Ionic Liquid

Selective Preparation of Furfural from Xylose over Sulfonic Acid Functionalized Mesoporous Sba-15 Materials

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