Aqueous-phase hydrogenolysis of glucose to value-added chemicals and biofuels: A comparative study of active metals

Liu, Chengwei; Zhang, Chenghua; Liu, Kangkai; Wang, Yi; Fan, Gaixian; Sun, Sikai; Xu, Jian; Zhu, Yulei; Li, Yongwang

doi:10.1016/j.biombioe.2014.11.005

Cited by 40 publications

(32 citation statements)

References 45 publications

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“…(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.…”

Section: Introductionmentioning

confidence: 99%

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

Akın

Yuksel

2016

Cellulose

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In this paper, a novel hybrid process for the treatment of microcrystalline cellulose (MCC) under hot-compressed water was investigated by applying constant direct current on the reaction medium. Constant current range from 1A to 2A was applied through a cylindrical anode made of titanium to the reactor wall. Reactions were conducted using a specially designed batch reactor (450 mL) made of SUS 316 stainless steel for 30-120 min of reaction time at temperature range of 170-230°C. As a proton donor H 2 SO 4 was used at concentrations of 1-50 mM. Main hydrolysis products of MCC degradation in HCW were detected as glucose, fructose, levulinic acid, 5-HMF, and furfural. For the quantification of these products, High Performance Liquid Chromatography (HPLC) and Gas Chromatography with Mass Spectroscopy (GC-MS) were used. A fractional factorial design with 2-level of four factors; reaction time, temperature, H 2 SO 4 concentration and applied current with 3 center points were built and responses were statistically analyzed. Response surface methodology was used for process optimization and it was found that introduction of 1A current at 200°C to the reaction medium increased Total Organic Carbon (TOC) and cellulose conversions to 62 and 81 %, respectively. Moreover, application of current diminished the necessary reaction temperature and time to obtain high TOC and cellulose conversion values and hence decreased the energy required for cellulose hydrolysis to value added chemicals. Applied current had diverse effect on levulinic acid concentration (29.9 %) in the liquid product (230°C, 120 min., 2 A, 50 mM H 2 SO 4 ).

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Section: Introductionmentioning

confidence: 99%

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

Akın

Yuksel

2016

Cellulose

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“…Segundo a análise de variância, a temperatura foi o segundo fator que mais influenciou o rendimento da reação, manifestando-se tanto de forma quadrática como linear. Conforme afirmado por Liu et al (2015), a atividade catalítica da quebra da ligação C-O aumenta com a elevação da temperatura da reação. Tal quebra faz parte do mecanismo de conversão de glicose em sorbitol, assim como de sorbitol em outros produtos, o que explica o comportamento quadrático da temperatura na reação de hidrogenação estudada.…”

Section: Resultados E Discussõesunclassified

“…Com o intuito de aumentar a eficiência do processo, o estudo de novos catalisadores tem crescido significativamente (Zhang et al, 2013), com destaque para catalisadores a base de rutênio, os quais apresentam alta atividade na conversão de glicose para sorbitol (Liu, et al, 2015;Tronci e Pittau, 2015). Dentre as vantagens dos catalisadores de rutênio destacam-se a possibilidade de reuso, boa seletividade e fácil separação do produto (Gorp, et al, 1999).…”

Section: Introductionunclassified

Influência Das Condições Reacionais Sobre a Produção De Sorbitol a Partir Da Hidrogenação Da Glicose

Macedo¹,

Stafussa²,

Santos³

et al. 2018

Blucher Chemical Engineering Proceedings

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RESUMO -A quantidade de catalisador(A), temperatura (B) e pressão (C) da reação foram estudas segundo planejamento experimental do tipo Box-Benken em 3 níveis para avaliar seus efeitos no processo de produção de sorbitol por meio da conversão catalítica da glicose. As reações foram conduzidas em um reator do tipo autoclave (Parr) na presença de catalisador a base de rutênio. Os resultados indicam que quantidade de catalisador e temperatura apresenta influências linear e quadrática, enquanto a pressão contribui apenas linearmente. Além do que, a concentração de catalisador é o fator de maior influência, sendo desejável utilizar concentrações entre 0,016 e 0,024 g/cm 3 . Os três fatores (A, B e C) exerceram influência sobre o rendimento, porém a seletividade apresentou-se invariavelmente em 100%.

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“…Non‐noble metal catalysts sometimes show different selectivities to certain products than noble metal catalysts. Zhang et al . have focused on the hydrogenolysis of glucose over a wide variety of transition‐metal catalysts, including Cu/C, Ni/C, Pt/C, Pd/C, Ru/C, Rh/C, and Ir/C.…”

Section: Hydrogenationmentioning

confidence: 99%

Heterogeneous Catalytic Conversion of Biobased Chemicals into Liquid Fuels in the Aqueous Phase

Chen

et al. 2016

ChemSusChem

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Different biobased chemicals are produced during the conversion of biomass into fuels through various feasible technologies (e.g., hydrolysis, hydrothermal liquefaction, and pyrolysis). The challenge of transforming these biobased chemicals with high hydrophilicity is ascribed to the high water content of the feedstock and the inevitable formation of water. Therefore, aqueous-phase processing is an interesting technology for the heterogeneous catalytic conversion of biobased chemicals. Different reactions, such as dehydration, isomerization, aldol condensation, ketonization, and hydrogenation, are applied for the conversion of sugars, furfural/hydroxymethylfurfural, acids, phenolics, and so on over heterogeneous catalysts. The activity, stability, and reusability of the heterogeneous catalysts in water are summarized, and deactivation processes and several strategies are introduced to improve the stability of heterogeneous catalysts in the aqueous phase.

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Aqueous-phase hydrogenolysis of glucose to value-added chemicals and biofuels: A comparative study of active metals

Cited by 40 publications

References 45 publications

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

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

Influência Das Condições Reacionais Sobre a Produção De Sorbitol a Partir Da Hidrogenação Da Glicose

Heterogeneous Catalytic Conversion of Biobased Chemicals into Liquid Fuels in the Aqueous Phase

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