نتایج جستجو برای: cyclopentanone

تعداد نتایج: 199  

Journal: :Catalysts 2023

A direct alkaline hydrothermal method was used to synthesize mono- and bimetallic Ni Cu on mesoporous silica (m-SiO2) as catalysts for the hydrogenation of furfural (FAL) cyclopentanone (CPO). The were characterized by XRD, FTIR, H2-TPR, SEM, TEM, HR-TEM, XPS, ICP, BET, CHN analysis. results demonstrate that addition metal improved reducibility revealed Ni-Cu alloy formation over m-SiO2. Furthe...

Journal: :Journal of Cleaner Production 2021

Aldol condensation of biomass-derives coupled with hydrogenation is a promising route for the production renewable aviation fuel. In this study, bifunctional catalyst was prepared to integrate aldol cyclopentanone and hydroprocessing fuel in one pot. Due its strong mild-basic sites, Mg–Al–O performed best total yield dimer trimer 80.4%. Nickel screened out be favorable hydrogenation. Considerin...

Journal: :Polymer Degradation and Stability 2021

Ethylene vinyl acetate (EVA), commonly used to encapsulate photovoltaic (PV) modules, deteriorates on prolonged exposure sunlight. In this work, fresh and deteriorated EVA samples prepared by UV irradiation (500 W m−2) over different periods (0–168 h) are characterized conventional elemental analysis, microscopic observations, Fourier transform infrared (FT-IR) spectroscopy, thermogravimetry. T...

Journal: :Frontiers in Mechanical Engineering 2021

Abstraction of hydrogen by ȮH is the dominant initiation step in low-temperature oxidation biofuels. Theoretical chemical kinetics calculations for such reactions provide a direct means quantifying rates abstraction, which are critical to modeling biofuel combustion. However, several cases and despite agreement on total rate coefficients, branching fractions (i.e. distribution initial radicals)...

Journal: :Fermentation 2022

The yeast Yarrowia lipolytica is well known for its versatile production of metabolites from various substrates, but, although isolated from, e.g., wild-fermented Belgian Sour beers, it rarely considered a starter culture in fermented beverages. In this study, we aimed to elucidate the ability Y. ferment brewers’ wort containing iso-α-acid 7 days at low and high aeration 20 °C 30 °C, with speci...

Journal: :Materials & Design 2021

The development of a novel polybutylene terephthalate (PBT) feedstock material for powder bed fusion polymers with laser beam (PBF-LB/P) by means liquid-liquid phase separation (LLPS) and precipitation is outlined. Appropriate solvents have been identified screening approach based on solubility parameters. Feasible system compositions solution cloud point temperatures were determined. For the m...

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