Effect of MgO activation conditions on its catalytic properties for base-catalyzed reactions

Diglyceride-rich oils from glycerolysis of edible vegetable oils

“…A N b value of 656 μmol/g was calculated by integration of the TPD curve. This value reasonably agrees with those of other MgO samples we used in the past [30] to promote different base-catalyzed reactions, as well as with those of MgO catalysts reported in the literature and prepared by different techniques [31,32]. The broad temperature range for CO 2 desorption indicates that MgO contains basic sites that bind CO 2 with different strength.…”

1-O-Alkyl (di)glycerol ethers synthesis from methyl esters and triglycerides by two pathways: catalytic reductive alkylation and transesterification/reduction

“…7 The transesterification reaction of methyl esters with glycerol catalyzed by heterogeneous catalysts in the absence of a solvent presents environmental and practical advantages. [35][36][37][38][39][40][41] In addition, when using methyl esters as substrates instead of carboxylic acids, no autocatalytic reaction occurs, thus making more efficient the control of the selectivity between primary and secondary esters by the catalyst. Some metal oxides are known for their efficiency in the transesterification of fatty methyl esters with glycerol, like MgO based catalysts.…”

Influence of natural adsorbates of magnesium oxide on its reactivity in basic catalysis

“…The basic properties of a solid were traditionally measured either by following the adsorption of acidic molecules on the basic surfaces mainly by IR spectroscopy 1-5 , calorimetry 6,1 and thermoprogrammed methods 2,1 or by using model reaction. [7][8][9] During the ten past years experimental and theoretical works have been performed to better define the basic properties of inorganic solids. 8,3,10,11 Studying the adsorption equilibrium of a probe molecule gives insights on the basic properties from a thermodynamic point of view.…”