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Preparation, characterization and application of novel surface-modified ZrSnO4 as Sn-based TMOs catalysts for the stearic acid esterification with methanol to biodiesel
Potassium phthalimide: An efficient and green organocatalyst for the synthesis of 4-aryl-7-(arylmethylene)-3,4,6,7-tetrahydro-1H-cyclopenta[d]pyrimidin-2(5H)-ones/thiones under solvent-free conditions
The 24 references without a DOI — listed, not checked
no DOI — not checkedCalcium oxide as a promising heterogeneous catalyst for biodiesel production: Current state and perspectives
no DOI — not checkedWaste oil has many advantages in domestic digestion
no DOI — not checkedProgress of biodiesel deep Processing
no DOI — not checkedCarbon neutrality goal leads to fundamental reform of China's economic system
no DOI — not checkedref6
no DOI — not checkedref7
no DOI — not checkedref8
no DOI — not checkedHydrophobic poly(ionic liquid)s as "two-handed weapons": Maximizing lipase catalytic efficiency in transesterification of soybean oil toward biodiesel
no DOI — not checkedref10
no DOI — not checkedref11
no DOI — not checkedPreparation of CaO/KIT-6 solid base catalysts and their catalytic performance in transesterification
no DOI — not checkedSynthesis of methyl oleate from Oleic acid catalyzed by Ionic liquid laspartic acid
no DOI — not checkedSimultaneous esterification and transesterification of waste phoenix seed oil with a high free fatty acid content using a free lipase catalyst to prepare biodiesel
no DOI — not checkedBiodiesel production through sulfuric acid catalyzed transesterification of aci dic oil: Techno economic feasibility of different process alternatives
no DOI — not checkedPreparation of mesoporous silica supported phosphotungstic acid catalyst and its application in biodiesel synthesis
no DOI — not checkedSimultaneous esterification and transesterification of waste phoenix seed oil with a high free fatty acid content using a free lipase catalyst to prepare biodiesel
no DOI — not checkedWaste oil has many advantages in domestic digestion
no DOI — not checkedPreparation and characterization of nanoencapsulated synthetic soybean oil derivative-an abundant and environmentally friendly phase change material-heat transfer analysis and applications
no DOI — not checkedPotassium phthalimide as efficient basic organocatalyst for the synthesis of 3,4-disubstituted isoxazol-5(4H)-ones in aqueous medium
no DOI — not checkedref26
no DOI — not checkedWaste oil has many advantages in domestic digestion
no DOI — not checkedTransesterification of Jatropha curcas oil glycerides: Theoretical and experimental studies of biodiesel reaction
no DOI — not checkedWaste oil has many advantages in domestic digestion
no DOI — not checkedTransesterification of Jatropha curcas oil glycerides: Theoretical and experimental studies of biodiesel reaction
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