Cottonseed methyl esters

Cottonseed methyl esters were tested in a four-stroke locomotive diesel resulting in a 0.7% loss of thermal efficiency, 32% reduction of particulate matter emissions, increase of NO c emissions as a function of several combustion parameters (eg, O/C ratio or injection timing) and a brake specific fuel consumption (BSFC) 13.4% higher than pure petrodiesel (Gautam and Agarwal, 2013). 

Figure 1 shows the methyl ester yield as a function of the reaction time for the transesterification of cottonseed oil catalyzed by the solid bases and acids. Of the solid bases, CaO and Mg0-Al203 were more effective for this reaction. Over 90% methyl ester was obtained in less than 3 hours. The reactions catalyzed by the solid acids were slower than that by the solid bases, which need about 9 hours to reach high concentration of ME. The different plateau values of the solid bases may be caused by the deactivited of the catalysts. 

For cottonseeds, pyrithiobac-sodium is extracted with acetone-water (4 1, v/v). After filtration, the acetone is removed by evaporation under reduced pressure. The residue is adjusted to pH 1 and extracted with ethyl acetate. The extract is cleaned up by liquid-liquid partitioning and methylated with diazomethane. The methyl ester of pyrithiobac is purified by silica gel column chromatography. Pyrithiobac-methyl is determined by gas chromatography (GC) with nitrogen-phosphorus detection (NPD). 

One paper from the group of Zhang reports [75] on the testing of various oils with MT0/H202 with CH3CN as solvent and imidazole as the nitrogen base. A base/MTO/H202/double bond ratio of 50 1 250 100 is used, and excellent results are obtained after 2 h at room temperature. Fatty acid methyl ester, sunflower oil, rapeseed oil, cottonseed oil, and palm oil can all be epoxidized with >99% selectivity and >98% yield with this system. 

A similar sequence was used by Gensler3 for the synthesis of the methyl ester of mnlvalic acid (8), a component of cottonseed oil, from l-chloro-7-hexadecyne 17). 

Fatty acids, cottonseed oil, methyl esters. See Methyl cottonseed Fatty acids, C6-12, triesters with trimethylolpropane. See Trimethylolpropane tri capryl ate/tricaprate Fatty acids, C18-unsaturated, dimers. See Dimer acid... 

Synonyms Fatty acids, cottonseed oil, methyl esters... 

Definition Methyl ester of cottonseed oil Uses Solvent, cosolvent, penetrant in industrial, food processing, and agric. applies. in textile processing aids in printing inks Trade Name Synonyms Norfox MCS [Norman, Fox http //www.norfoxx.com]... 

Calcium saccharate PEG-6M PEG-35M plasticizer, ceramics Hydroxypropyl guar Hydroxypropyl methylcellulose Methylcellulose Methyl hydroxyethylcellulose plasticizer, chewing gum Acetylated hydrogenated cottonseed glyceride Methyl ester of rosin, partially hydrogenated Pentaerythrityl rosinate Rice (Oryza sativa) wax Stearic acid plasticizer, chlorinated plastic Tri-2-ethylhexyl trimellitate plasticizer, chloroethylene copolymers Trioctyl trimellitate plasticizer, chlorosulfonated rubber Triisooctyl trimellitate plasticizer, cigarette filters Triethyl citrate plasticizer, cleansers Lanolin alcohol PEG-30 lanolin plasticizer, clear vinyl film Triisopropylphenyl phosphate plasticizer, cloth film Acetamide... 

Occurs in beetroot, cottonseed, etc. Prisms or leaflets. M,p. 293 Isomerises at the m.p. to methyl ester of dimetbylaminoacetic acid. Crystallises from aq. s61 vents with IHgO, in which the free acid HO N(CH.)j CH2 COOH is present (k = 7-0 x l(k at 25 ). The HgO is lost at 100 , giving betaine. Hydrated form... 

Acetylated hydrogenated cottonseed glyceride Carbon dioxide Lactic acid esters of mono-and diglycerides of fatty acids Methyl ethyl cellulose Nitrogen... 

The fatty acid methyl/ethyl esters of vegetable oils such as jatropha, Mesua ferrea, soybean, rapeseed, cottonseed, sunflower, safflower, peanut and linseed can be used as an alternative fuel for diesel engines (biodiesel) Methyl and ethyl esters of vegetable oils have several outstanding advantages among other new renewable and clean engine fuel alternatives. The... 

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