01988nas a2200193 4500008004100000022001400041245011600055210006900171260000800240520124700248653003901495653002101534653003801555653001601593653001101609100002201620700002201642856013001664 2019 eng d a1877-264100aFormic-acid-induced using recyclable-ionic liquids as catalysts for lignin conversion into aromatic co-products0 aFormicacidinduced using recyclableionic liquids as catalysts for cNOV3 a

Lignin has been widely named as a sustainable and renewable bioresource of energy, fuels, chemicals and materials, particularly phenolic chemicals production on Earth. These bio-derived compounds are in great potential need of biorefinery to valorize complete plant biomass. Lignin depolymerization showed a great promise approach to convert into low molecular aromatic products. In this report, high molecular weight (54,000 Da) lignin depolymerization into maximum yields (87%), (>= 95 +/- 6% mass balance) using a formic acid along with dual (-SO3H) functionalized imidazole-based recyclable (4 times) Bronsted acidic ionic liquids (BAILs) as catalysts have been investigated in H2O-CH3OH (1:5, v/v) at 120 degrees C for 1 h. The structural correlations between the lignin and aromatic products were studied by bulk (CHNS, GPC, etc.) and molecular (UV-Vis, FT-IR, NMR (1D/2D) levels experimental techniques. Additionally, the identification of aromatic products was carried out by applying HPLC, GC and GC-MS techniques. Graphic Addition of a formic acid into Bronsted acidic ionic liquids improved the catalytic efficiency significantly for lignin depolymerization into 87% low molecular weight aromatic products. [GRAPHICS] .

10aBulk and molecular levels analysis10adepolymerization10aDual functionalized ionic liquids10aFormic acid10alignin1 aSingh, Sandip, K.1 aDhepe, Paresh, L. uhttps://library.ncl.res.in/content/formic-acid-induced-using-recyclable-ionic-liquids-catalysts-lignin-conversion-aromatic-co01902nas a2200253 4500008004100000022001400041245009800055210006900153260000800222300001100230490000800241520108800249653002001337653001601357653001701373653002601390653002001416100001601436700001101452700001801463700002201481700001501503856013001518 2022 eng d a0016-236100aProtophilic solvent-impelled quasi-catalytic CO2 valorization to formic acid and N-formamides0 aProtophilic solventimpelled quasicatalytic CO2 valorization to f cOCT a1250740 v3263 a

As a low-price and luxuriant C1 sustainable resource, CO2 has the privilege of synthesizing hydrogen carriers and valuable chemicals. However, expensive metallic and organic catalysts are often indispensable for going on wheels of the relevant reaction processes. In this work, a protophilic solvent-impelled quasi-catalytic system was developed for efficient synthesis of formic acid and various N-formamides with high yields of 76-94% via reductive CO2 functionalization under mild reaction conditions (50 ?). Direct activation of the liquid hydrosilane toward the reduction of CO2 enabled by DMSO with optimum basicity/protophilicity is the predominant reaction route among the examined interaction models, while carbonic acid potentially derived from excessive CO2 and residual water inhibits the reaction, as explicitly disclosed by theoretical calculations and isotope labeling experiments. In addition, the in situ formed O-formyl species is conductive to the cascade CO2 reduction steps, which remarkably facilitated the overall quasi-catalytic upgrading process.

10aCO2 utilization10aFormic acid10aGreen energy10aNitrogenous chemicals10aQuasi-catalysis1 aWu, Hongguo1 aLi, Hu1 aZhao, Wenfeng1 aSudarsanam, Putla1 aYang, Song uhttps://library.ncl.res.in/content/protophilic-solvent-impelled-quasi-catalytic-co2-valorization-formic-acid-and-n-formamides02563nas a2200241 4500008004100000022001400041245015400055210006900209260000900278300001600287490000700303520167200310653002201982653001602004653002202020653001402042653002302056100001802079700002902097700003502126700003002161856013002191 2025 eng d a2168-048500aSelective anodic transformation of glycerol with ZnCo 2 O 4 2D nanoplates: sustainable coproduction of carbon-negative green hydrogen and formic acid0 aSelective anodic transformation of glycerol with ZnCo 2 O 4 2D n cJUL  a11458-114730 v133 a

In the pursuit of sustainable green hydrogen production, the electrooxidation of abundantly available carbon-containing molecules at a significantly low voltage presents a promising pathway, helping to reduce the cost of hydrogen generation while simultaneously yielding value-added chemicals/fuels. In the current study, we report the template-free green synthesis of ZnCo2O4 directly on Ni-foam (NF), demonstrating anodic stability and bifunctional electrocatalytic activity toward alkaline (1 M KOH) glycerol oxidation over an extended duration of 230 h at 50 mA cm- 2. The catalyst's high electrochemical surface area contributes to its remarkable performance, enabling sustained high current density. Compared with monometallic (ZnO or Co3O4) oxides, ZnCo2O4 oxide reveals superior catalytic performance. The two-electrode electrolyzer setup (ZnCo2O4 oxide/NF || ZnCo2O4 oxide/NF) operates at a significantly low cell potential of 1.9 V to achieve 100 mA cm- 2 in 0.2 M glycerol, which is 180 mV lower than that of conventional 1 M KOH solution. The three-electrode setup achieved 1 A/cm2 current density at 1.907 V vs RHE. Both anodic and cathodic processes exhibit high Faradaic efficiency, achieving 98% efficiency for H2 and 90% selectivity toward formate generation, along with significant methanol production. This demonstrates efficient C-C bond cleavage capability with glycerol to predominantly C1-products. The electrocatalytic formate production from alkaline glycerol using ZnCo2O4 offers an energy-efficient pathway, facilitating carbon-negative green hydrogen generation, thus contributing to a cleaner and sustainable energy landscape.

10aenergy conversion10aFormic acid10aglyceroloxidation10agreen H-210awater electrolysis1 aSaha, Arindam1 aMurugiah, Vasantharadevi1 aKollenteakathootu, Jayalakshmi1 aGopinath, Chinnakonda, S. uhttps://library.ncl.res.in/content/selective-anodic-transformation-glycerol-znco-2-o-4-2d-nanoplates-sustainable-coproduction