固体碱的制备及其在三羟甲基乙烷合成中的应用

制备了Na2CO3／γ-Al2O3和NaOH／γ-Al2O3固体碱催化剂，考察了载体种类和其它制备条件对固体碱碱量的影响，并将其用于催化甲醛和正丙醛反应合成三羟甲基乙烷。具体如下：37％的甲醛60mL，加入1g固体碱Na2CO3／γ-Al2O3，然后在搅拌的条件下缓慢滴加98％的正丙醛20mL，于35℃下反应3h。反应完成后，将固体弱碱Na2CO3／γ-Al2O3与反应溶液分离，然后再加入1g固体强碱NaOH／γ-Al2O3，于70℃下反应3h，TME产率最高可达86．2％。

The Preparation of Solid Base and the Application in the Synthesis of Trimethylolethane

Solid base Na2 CO3/γ-Al2O3 and NaOH/γ-Al2O3 were prepared and applied in the synthesis of trimethylolethane from propionaldehyde and formaldehyde by two step reactions. When the weak solid base Na2CO3/γ-Al2O3 catalyst amount was lg, 37% formaldehyde 60mL and 20mL 98% propionaldehyde were used as atarting materials, aldol condensation temperature was 35℃, reaction for 3h. After that, NaaCO3/γ-Al2O3 was separeted from the obtained mixture, 1 g NaOH/γ-Al2O3 was put into as Cannizzero reaction catalyst reaction for 3h at 70℃, the yield of trimethylolethane was high up to 86.2%.