Catalytic synthesis of value-added chemicals from renewable biomass or biomass-derived platform is an important way to reduce current dependence on fossil-fuel resources. In recent years, 2,5-furandicarboxylic acid (FDCA) has received significant attention due its wide application in many fields, particularly as a substitute petrochemical-derived terephthalic the useful polymers. Therefore, much effort been devoted catalytic FDCA. this critical review, we will provide overview concise and...

Selective oxidation of 5-hydroxymethylfurfural (HMF) to 2,5-furandicarboxylic acid (FDCA) is one the key reactions for producing chemical commodities from biomass and their derivatives. The challenge this reaction develop an efficient catalytic process that can be conducted under mild conditions (room temperature atmospheric pressure, using oxygen molecules in air as oxidant) a recyclable catalyst. Herein we report photocatalyst cobalt thioporphyrazine (CoPz) dispersed on g-C3N4 (abbreviated...

A new method for the selective aerobic oxidation of 5-hydroxymethylfurfural (HMF) into 2,5-furandicarboxylic acid (FDCA) has been developed employing a magnetically separable [γ-Fe2O3@HAP-Pd(0)] catalyst. The catalyst was prepared by exchange Pd2+ with Ca2+ in γ-Fe2O3@HAP, followed reduction to Pd(0) nanoparticles, and well characterized TEM, XRD XPS. showed high activity HMF FDCA water, 97% conversion 92.9% yield under optimal reaction conditions. demonstrated some advantages, including its...

Replacement of precious noble metal catalysts with low-cost, non-noble heterogeneous for chemoselective reduction and reductive coupling nitro compounds holds tremendous promise the clean synthesis nitrogen-containing chemicals. We report a robust cobalt-nitrogen/carbon (Co-N x /C-800-AT) catalyst into amines their derivates. The Co-N /C-800-AT was prepared by pyrolysis cobalt phthalocyanine-silica colloid composites subsequent removal silica template nanoparticles. showed extremely high...

A nano-Fe3O4–CoOx catalyst was prepared via a simple wet impregnation method. The showed good catalytic performance for the conversion of 5-hydroxymethylfurfural into 2,5-furandicarboxylic acid (FDCA) with t-BuOOH as oxidant. Several important reaction parameters were explored, highest FDCA yield 68.6% obtained from HMF after 15 h at temperature 80 °C. One-pot fructose also successful two steps. Catalytic over Fe3O4@SiO2–SO3H yielded 93.1% HMF, which oxidized in situ 59.8%. Furthermore,...

Biomass has emerged as a potential alternative to the dwindling fossil fuel reserves. Catalytic conversion of biomass become main route for transformation into variety commodity chemicals or liquid fuels. Currently, many reviews have effectively documented use homogeneous and heterogeneous catalysts catalytic fuels; however, comparatively less attention been paid magnetic in transformation. Magnetic nanoparticles are well-designed way bridge gap between catalysts. The introduction solid...

Recently, there has been growing interest in the transformation of renewable biomass into value-added chemicals and biofuels.

Pd/C@Fe₃O₄ catalyst showed high catalytic activity in the oxidation of 5-hydroxymethylfurfural to 2,5-furandicarboxylic acid under mild reaction conditions.

Selective hydrogenolysis of the Caryl-O bonds in lignin is a key strategy for generation fuels and chemical feedstocks from biomass. Currently, has been mainly conducted using hydrogen, which flammable not sustainable or economical. Herein, an external hydrogen-free process aryl ethers models dioxasolv over nickel nanoparticles supported on Al2O3, reported. Kinetic studies reveal that transfer activity three model compounds decreased following order: benzyl phenyl ether (α-O-4),...

Catalytic transfer hydrogenation of the C═O bond has been considered to be one most important processes for synthesis fuels and chemicals. In this study, we have developed a metal-free furfural into furfuryl alcohol some other valuable carbonyl compounds alcohols as hydrogen donors. Hydroxyapatite-encapsulated magnetic γ-Fe2O3 (γ-Fe2O3@HAP) acted base promote with iso-propanol donor. The catalytic performance γ-Fe2O3@HAP catalyst was greatly affected by structure alcohol. iso-Propanol best...

Abstract Selective cleavage of C-C bonds is very important in organic chemistry, but remains challenging because their inert chemical nature. Herein, we report that Zn/NC-X catalysts, which Zn 2+ coordinate with N species on microporous N-doped carbon (NC) and X denotes the pyrolysis temperature, can effectively catalyze aerobic oxidative C(CO)-C quantitatively convert acetophenone to methyl benzoate a yield 99% at 100 °C. The Zn/NC-950 be applied for wide scope derivatives as well more...

Abstract Direct conversion of carbohydrates into 5‐hydroxymethylfurfural (HMF) catalyzed by germanium(IV) chloride in ionic liquids has been investigated search an efficient and environmentally friendly process. Monosaccharides D ‐fructose ‐glucose, disaccharides sucrose maltose, even the polysaccharide cellulose were successfully converted HMF with good yields under mild conditions (yield up to 92 % 5 min case fructose). The structure liquids, catalyst loading, reaction temperature water...

In this study, a magnetically-recoverable catalyst (Fe3O4@SiO2-HPW) was prepared by the application of phosphotungstic acid (HPW) supported on silica-coated Fe3O4 nanoparticles. The samples were characterized XRD, TEM, FT-IR, and N2-adsorption–desorption isotherms. content W in Fe3O4@SiO2-HPW measured inductively coupled plasma atomic emission spectroscopy (ICP-AES) its surface acidity determined potentiometric titration with n-butylamine. showed an excellent catalytic activity for synthesis...

Carbon dots, which are superior fluorescent nanomaterials with low photobleaching, toxicity, excellent biocompatibility, and environmental hazard, have presented exciting opportunities in many fields. However, a better strategy to synthesize carbon dots high quantum yield further developing their potential applications is still needed. Herein, one-step hydrothermal was proposed prepare from egg white. The as-prepared CDs, diameter of 2.1 nm, were well-dispersed aqueous solution showed pH...

Abstract A clean, facile, and environment‐friendly catalytic method has been developed for the conversion of furfuryl alcohol into alkyl levulinates making use novel solid catalyst methylimidazolebutylsulfate phosphotungstate ([MIMBS] 3 PW 12 O 40 ). The is an organic–inorganic hybrid material, which consists organic cation inorganic anion. study optimizing reaction conditions such as time, temperature loading performed. Under optimal conditions, a high n ‐butyl levulinate yield up to 93 %...