摘要
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%。
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%.
出处
《山东化工》
CAS
2009年第12期12-15,共4页
Shandong Chemical Industry
基金
山西省高等学校科技开发项目资助(20081026)
