03201nas a2200277   4500008004100000022001400041245016000055210006900215260000800284300001400292490000700306520221300313653002502526653002602551653001702577653002302594653001302617653002002630100001902650700002202669700002902691700002602720700002202746700002502768856013002793       2025                        eng d  a2168-048500aEnhanced Production and Techno-Economic Analysis of Sustainable Biofuel Production via Continuous Hydrogenation of Furfural Using the Cu-ZnO-Al2O3 Catalyst0 aEnhanced Production and TechnoEconomic Analysis of Sustainable B  cFEB  a3183-31990 v133 a<p>
	2-Methylfuran is a perfect green solution on the pathway of finding alternative fuels. We report here for the first time the continuous production of 2-methylfuran (2-MF), a sustainable biofuel from biomass-derived furfural (FFA), over an industrial Cu-ZnO-Al2O3 (CZA) catalyst. The modified coprecipitation method provides a uniformly dispersed crystalline structure to the synthesized catalysts, along with intended copper (Cu) loading achievement. Different Cu loadings affect the catalytic behavior and activity. Hence, CZA catalysts with two Cu loadings of 9.8 and 4.7% were studied in detail, denoted as C1 and C2, respectively. The catalysts were characterized via XRD, N-2 adsorption, H-2-TPR, NH3-TPD, XPS, ICP-MS, and TEM. Remarkably, the prepared catalysts demonstrate balanced acid sites with mesopores, a high surface area and pore volume, and better controlled nanoparticle size promoting catalytic activity. TEM and H-2-TPR studies reveal a better Cu dispersion. Existence of Cu2+ and Cu (+) even after reduction by XPS study proves the efficiency of the synthesized catalysts. Furthermore, TGA indicates the stability of CZA catalysts. To understand catalytic activity and selectivity, the investigation was carried out in a packed-bed fixed-bed stainless steel reactor. Better physiochemical properties result in high FFA conversion of 33.8% and selectivity of 99.6% for 2-MF. No side products were formed during reaction otherwise improbable via the continuous method. Compared with available literature, the CZA catalyst was found to exhibit superior catalytic performance. The reaction kinetics of furfural hydrogenation to 2-methylfuran was investigated, and it was found that the reaction order is high, and the activation energy was 61.2 kJ/mol. The rate constant k clearly obeyed the Arrhenius law from 180 to 220 degrees C. In addition, evaluation of reaction kinetics also indicated the absence of ring hydrogenation and decarbonylation products, which is difficult to achieve. Finally, the process shows significant economic viability, which resulted in the minimum levelized production cost for 2-methylfuran of 173,068.16 \$/ton with 78.32% overall energy efficiency.</p>
10a2-methylfuran (2-MF)10acontinuous production10aCu-ZnO-Al2O310aeconomic viability10afurfural10agreen synthesis1 aSaha, Biswajit1 aRacha, Arundhathi1 aChaudhary, Puneet, Kumar1 aSingh, Brijesh, Kumar1 aSamanta, Chanchal1 aNewalkar, Bharat, L.  uhttps://library.ncl.res.in/content/enhanced-production-and-techno-economic-analysis-sustainable-biofuel-production-continuous02257nas a2200265   4500008004100000022001400041245008600055210006900141260000900210490000700219520138700226653001601613653001501629653003901644653002001683653001201703100001701715700002201732700002901754700002201783700002501805700002601830700002001856856011501876       2025                        eng d  a1864-563100aIntegrated flue gas CO2 capture and conversion to formate: a sustainable approach0 aIntegrated flue gas CO2 capture and conversion to formate a sust  cDEC 0 v183 a<p>
	Industrial CO2 emissions, characterized by dilute streams and impurity complexity, demand energy-efficient mitigation strategies beyond conventional capture technologies. Here, an integrated CO2 capture and conversion (ICCC) system is reported employing a heterogenized iridium catalyst-hydroxyquinoline-ligated Cp*Ir-Cl immobilized on amine-functionalized silica-that directly converts CO2 from synthetic flue gas containing SOx, NOx, and O2 to formate with 100% selectivity. The catalyst delivers remarkable activity, achieving turnover numbers up to 10,286 within 16 h. Density functional theory reveals that its square pyramidal geometry, induced by the hydroxyquinoline ligand, enhances Ir-N(ring) bond strength and electronic delocalization, thereby improving hydration energy, structural robustness, and catalytic efficiency. Importantly, the catalyst system demonstrates excellent durability, maintaining full activity over five regeneration cycles. Hydrogenation in a 1 M DABCO medium, followed by thermal decomposition of the amine-formate adduct at 150 degrees C, enables efficient lean amine regeneration, allowing subsequent flue gas capture and formate production without performance loss. This closed-loop strategy delivers a sustainable, contaminant-tolerant, and recyclable CO2-to-formate platform with strong promise for scalable industrial deployment.</p>
10aCO2 capture10aflue gases10aintegrated capture and conversions10anet zero future10aRecycle1 aKumar, Rohit1 aMajumder, Supriyo1 aSingh, Chadrodai, Pratap1 aSamanta, Chanchal1 aNewalkar, Bharat, L.1 aKrishnamurty, Sailaja1 aDas, Raj, Kumar  uhttps://library.ncl.res.in/content/integrated-flue-gas-co2-capture-and-conversion-formate-sustainable-approach