Ohiaeri, Ejike E.; Odera, Stone R.; Onukwuli, Okechukwu D. published the artcile< The synthesis and optimization of a trimethylolpropane based biolubricant from alard oil base stock>, Recommanded Product: (9Z,12Z)-Methyl octadeca-9,12-dienoate, the main research area is optimization trimethylolpropane biolubricant lard oil base stock.
A lard oil based biolubricant was synthesized through a two stage transesterification reaction. Raw lard oil was synthesized with methanol using potassium hydroxide as catalyst to produce a Me ester for the first stage transesterification while the second stage involved the synthesis of the Me ester and trimethylolpropane with sodium methoxide as catalyst to produce the lard oil based TMP ester. The optimization of the lard oil based TMP ester was carried out using a central composite design (CCD) of response surface methodol. The optimal conditions for the various independent variables were reaction temperature of 130 鎺矯, mole ratio of 1:4, catalyst weight of 1.5%weight/weight and reaction time of 180mins for a corresponding lard oil based TMP ester yield of 93%. Anal. of variance (ANOVA) of the response showed a quadratic regression model with interacting independent variables. Regression coefficient (R2) of 0.972 and a standard deviation of 0.631 implies that 97.2% of the changes in the response can be explained by the regression model. The lubricating properties of the lard oil biolubricant are as follows: pour point of -10鎺矯, flash point of 229鎺矯, viscosity index of 2.32, sp. gr. of 0.92g/mL and kinematic viscosity of 40.51 and 10.22cSt at 40 鎺矯 and 100 鎺矯 resp. This study showed that the properties of the lard oil based TMP ester meets the ISO VG32 grade requirement and has its potential as a base oil for gear oil in automobiles.
Pharmaceutical and Chemical Journal published new progress about Composites (central design). 112-63-0 belongs to class esters-buliding-blocks, and the molecular formula is C19H34O2, Recommanded Product: (9Z,12Z)-Methyl octadeca-9,12-dienoate.
Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics