Partial Hydrogenation of Soybean and Waste Cooking Oil Biodiesel over Recyclable-Polymer-Supported Pd and Ni Nanoparticles
نویسندگان
چکیده
Biodiesel obtained through the transesterification in methanol of vegetable oils, such as soybean oil (SO) and waste cooking (WCO), cannot be used a biofuel for automotive applications due to presence polyunsaturated fatty esters, which have detrimental effect on oxidation stability (OS). A method upgrading this material is catalytic partial hydrogenation acid methyl ester (FAME) mixture. The target molecule reaction monounsaturated oleate (C18:1), represents good compromise between OS cold filter plugging point (CFPP) value, becomes too high if biodiesel consists unsaturated esters only. In present work, polymer-supported palladium (Pd-pol) nickel (Ni-pol) nanoparticles were separately tested catalysts SO WCO biodiesels under mild conditions (room temperature Pd-pol T = 100 °C Ni-pol) using dihydrogen (p 10 bar) reductant. Both co-polymerization metal containing monomer M(AAEMA)2 (M Pd, Ni; AEEMA? deprotonated form 2-(acetoacetoxy)ethyl methacrylate)) with co-monomers (ethyl methacrylate Pd N,N-dimethylacrilamide Ni) cross-linkers (ethylene glycol dimethacrylate N,N’-methylene bis-acrylamide Ni), followed by reduction. system became very active C=C double bonds, but poorly selective towards desirable C18:1 product. Ni-pol catalyst was less than Pd-pol, mono-unsaturated Recyclability tests demonstrated that Ni-based retained its activity selectivity both substrates at least five subsequent runs, thus representing an opportunity biomass valorization.
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ژورنال
عنوان ژورنال: Catalysts
سال: 2022
ISSN: ['2073-4344']
DOI: https://doi.org/10.3390/catal12050506