Catalytic behavior of SBA-15 supported heteropoly compounds in synthesis of fructone was written by Zhang, Fu-min;Yuan, Chao-shu;Wang, Jun. And the article was included in Gaoxiao Huaxue Gongcheng Xuebao in 2006.Formula: C8H14O4 The following contents are mentioned in the article:
Catalysts of 12-tungstophosphoric acid (PW), cesium salt of PW and potassium salt of PW supported on mesoporous silica SBA-15 with different loadings were prepared by impregnation, resp. Their catalytic behaviors were investigated via the acetalization of Et acetoacetate with ethylene glycol to synthesize fructone. The phys. and chem. properties of the catalysts prepared were characterized by N2 adsorption, Hammett indicator and FT-IR. The catalytic stability of the catalysts was evaluated by water treatment test, in which the concentration of the heteropoly compound leaking into the water was measured by UV-visual spectrophotometer. It is found that the catalysts have no activity in the synthesis of fructone when the loading of PW on SBA-15 is lower than 30% and the loading of Cs salt or K salt of PW on SBA-15 is lower than 20%. During repeatedly using, the deactivation of the catalysts prepared is closely associated with the leakage of active heteropoly species into the polar solvent. Since in the polar reaction system, the cesium salts of PW are water-tolerant, it causes the catalyst of supported cesium salts of PW on SBA-15 has higher catalytic stability. This study involved multiple reactions and reactants, such as Ethyl 2-(2-methyl-1,3-dioxolan-2-yl)acetate (cas: 6413-10-1Formula: C8H14O4).
Ethyl 2-(2-methyl-1,3-dioxolan-2-yl)acetate (cas: 6413-10-1) belongs to dioxole derivatives. Dioxoles, particularly fluorinated dioxoles, are used as co-monomers to make polymers that find use in forming protective coatings for chemical resistance. Although benzodioxole is not particularly important, many related compounds containing the methylenedioxyphenyl group are bioactive, and thus are found in pesticides and pharmaceuticals.Formula: C8H14O4
Referemce:
1,3-Benzodioxole – Wikipedia,
Dioxole | C3H4O2 – PubChem