Preparation and catalytic esterification activity of novel organic-silicotungstate was written by Luan, Qing-jie;Li, Si-jia;Liu, Li-jun;Gong, Shu-wen. And the article was included in Huaxue Shiji in 2018.Recommanded Product: Methyl heptanoate The following contents are mentioned in the article:
A novel organic-silicotungstate catalyst (QA-HSiW) was prepared by the modifying of H4SiW12O40 with quinaldic acid. The QA-HSiW was characterized by powder X-ray diffraction (XRD), IR spectroscopy (FT-IR), thermogravimetric anal. (TG) and potentiometric titration Then the catalyst was employed for esterification of oleic acid to evaluate its acid-catalytic activity. The results indicated that QA-HSiW was not only maintained the typical Keggin structure of HSiW, but also presented strong acid strength and good thermal stability. QA-HSiW exhibited excellent catalytic activity in esterification and the conversion of oleic acid could reach up to 99.8% under optimal conditions. QA-HSiW had good reusability and there was no obvious change for the phase and the Keggin structure of catalyst after the reaction. This study involved multiple reactions and reactants, such as Methyl heptanoate (cas: 106-73-0Recommanded Product: Methyl heptanoate).
Methyl heptanoate (cas: 106-73-0) belongs to esters. Esters are widespread in nature and are widely used in industry. In nature, fats are in general triesters derived from glycerol and fatty acids. Esters are responsible for the aroma of many fruits. Esterification is the general name for a chemical reaction in which two reactants (typically an alcohol and an acid) form an ester as the reaction product. Esters are common in organic chemistry and biological materials.Recommanded Product: Methyl heptanoate
Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics