Amorphous SiO₂-SO₃H [1] with a small surface area and 1.32-mmol H⁺/g was used for the one-step preparation of solketal from glycerol and acetone; a 20%-w/w catalyst mixture (10% [1] and 10% (Bu₄N)(BF₄) was found to be very efficient for the synthesis of disolketal ether and of oxygenated biofuels fatty acids solketal esters (FASEs), by direct esterification of the caprylic, lauric, stearic, oleic and linoleic acids with solketal in a 4:1 acid:solketal ratio in refluxing toluene. Solketal acetate was also produced in quantitative yields.

中文翻译：

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含氧生物燃料：用磺化二氧化硅和（Bu ₄ N）（BF ₄）催化剂的混合物合成脂肪酸Solketal酯

用甘油和丙酮一步法制备表面积较小，1.32 mmol H ⁺ / g的无定形SiO ₂ -SO ₃ H [1] 。发现20％-w / w的催化剂混合物（10％[1]和10％（Bu ₄ N）（BF ₄））对于合成二油基醚和含氧生物燃料，脂肪酸，油基酯（FASEs）非常有效。通过将辛酸，月桂酸，硬脂酸，油酸和亚油酸与邻苯二酚在回流的甲苯中以4：1的酸：己二醛比例直接酯化，还可以定量获得乙酸丁二酯。