Efficient valorization of biomass to biofuels with bifunctional solid catalytic materials

Li, Hu; Fang, Zhen; Smith, Richard L.; Yang, Song

doi:10.1016/j.pecs.2016.04.004

Cited by 254 publications

(130 citation statements)

References 1,125 publications

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“…Table 3) [27]. As above reported for homogeneous metal halides, also for the heterogeneous systems the right balance of both Brønsted and Lewis acidity enhances the LA yield [81]. When the HY zeolite is modified by combining the zeolite with metal halides (such as CrCl 3 or FeCl 3 ), the resulting hybrid catalysts show an enhanced performance in glucose conversion.…”

Section: Heterogeneous Catalysts In Watersupporting

confidence: 60%

New Frontiers in the Catalytic Synthesis of Levulinic Acid: From Sugars to Raw and Waste Biomass as Starting Feedstock

et al. 2016

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Levulinic acid (LA) is one of the top bio-based platform molecules that can be converted into many valuable chemicals. It can be produced by acid catalysis from renewable resources, such as sugars, lignocellulosic biomass and waste materials, attractive candidates due to their abundance and environmentally benign nature. The LA transition from niche product to mass-produced chemical, however, requires its production from sustainable biomass feedstocks at low costs, adopting environment-friendly techniques. This review is an up-to-date discussion of the literature on the several catalytic systems that have been developed to produce LA from the different substrates. Special attention has been paid to the recent advancements on starting materials, moving from simple sugars to raw and waste biomasses. This aspect is of paramount importance from a sustainability point of view, transforming wastes needing to be disposed into starting materials for value-added products. This review also discusses the strategies to exploit the solid residues always obtained in the LA production processes, in order to attain a circular economy approach.

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Section: Heterogeneous Catalysts In Watersupporting

confidence: 60%

New Frontiers in the Catalytic Synthesis of Levulinic Acid: From Sugars to Raw and Waste Biomass as Starting Feedstock

et al. 2016

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“…[11][12][13][14] These types of heterogeneous catalysts are already playing a relevant role in several biomass valorization processes (including lignocellulosic biomass), as can be seen from the numerous scientific reports and literature revisions dedicated to this topic. [15][16][17][18][19][20][21][22][23] Nonetheless, most of the reviews currently available in the literature are focused on the utilization and potential of inorganic metal oxides (either pure or mixed metal oxides) and zeolites for biomass transformation (and derived platform molecules), and less attention has been given to LDH-type and derived catalysts.…”

Section: Introductionmentioning

confidence: 99%

Recent advances on the utilization of layered double hydroxides (LDHs) and related heterogeneous catalysts in a lignocellulosic-feedstock biorefinery scheme

et al. 2017

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Layered double hydroxides (LDHs) and derived materials have been widely used as heterogeneous catalysts for different types of reactions either in gas or in liquid phase. Among these processes, the valorization/upgrading of lignocellulosic biomass and derived molecules have attracted enormous attention because it constitutes a pivotal axis in the transition from an economic model based on fossil resources to one based on renewable biomass resources with preference for biomass waste streams. Proof of this is the increasing amount of literature reports regarding the rational design and implementation of LDHs and related materials in catalytic processes such as: depolymerization, hydrogenation, selective oxidations, and C-C coupling reactions, among others, where biomass-derived compounds are used. The major aim of this contribution is to situate the most recent advances on the implementation of these types of catalysts into a lignocellulosic-feedstock biorefinery scheme, highlighting the versatility of LDHs and derived materials as multifunctional, tunable, cheap and easy to produce heterogeneous catalysts.

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“…The over‐exploration of fossil sources and threat of climate change have spurred the exploration of producing fuels and chemicals in a sustainable way . Lignocellulosic biomass is considered to be the most abundant resource on the earth, which has been extensively explored as a renewable feedstock for the production of value‐added chemicals and biofuels .…”

Section: Introductionmentioning

confidence: 99%

Simply Assembly of Acidic Nanospheres for Efficient Production of 5‐Ethoxymethylfurfural from 5‐Hydromethylfurfural and Fructose

Wang

Fang

et al. 2017

Energy Tech

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A series of organic–inorganic acidic hybrids in uniform nanospheres were prepared by self‐assembly of phosphotungstic acid (HPW) and pyridine (PY) or triethylamine (TEA) without using a template and surfactant. The prepared samples were characterized by XRD, TEM, FTIR, and N2 adsorption–desorption isotherms, and their surface acidity was determined by titration. Particularly, PY‐PW‐1 showed a predominant catalytic performance in the near complete etherification of 5‐hydromethylfurfural (HMF) to 5‐ethoxymethylfurfural (EMF) with a high yield of 90 % at 80 °C in 24 h, which might be ascribed to its relatively high acidity and smaller particle size. This kinetic study elucidated the superior activity of PY‐PW‐1 in the HMF‐to‐EMF conversion. Fructose could also be directly converted to EMF in a moderate yield of 55 % at an elevated temperature of 120 °C by a cascade reaction process. In addition, PY‐PW‐1 could be reused five times with no evident loss of its catalytic activity. Importantly, the downstream product of EMF (i.e., ethyl levulinate) in an excellent yield of 93 % could also be achieved from HMF by further increasing the reaction temperature to 140 °C.

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Efficient valorization of biomass to biofuels with bifunctional solid catalytic materials

Cited by 254 publications

References 1,125 publications

New Frontiers in the Catalytic Synthesis of Levulinic Acid: From Sugars to Raw and Waste Biomass as Starting Feedstock

New Frontiers in the Catalytic Synthesis of Levulinic Acid: From Sugars to Raw and Waste Biomass as Starting Feedstock

Recent advances on the utilization of layered double hydroxides (LDHs) and related heterogeneous catalysts in a lignocellulosic-feedstock biorefinery scheme

Simply Assembly of Acidic Nanospheres for Efficient Production of 5‐Ethoxymethylfurfural from 5‐Hydromethylfurfural and Fructose

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