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五配位铝强化硅铝固体酸的固体核磁共振研究
王子春1,黄骏2,姜怡娇1,*()
Solid-State NMR Spectroscopy Studies of Enhanced Acidity of Silica-Aluminas Based on Penta-Coordinated Aluminum Species
Zi-chun WANG1,Jun HUANG2,Yi-jiao JIANG1,*()

图9. ASAs上C3糖类的催化转化.(a) SA/70催化苯甲酰甲醛（―）与多种醇反应合成扁桃酸盐（---）的转化率/选择性—时间曲线：甲醇（■），乙醇（●），异丙醇（▼），正丙醇（◆），正丁醇（▲），及对照组采用De-Al-HY与异丙醇（★）[26].(b) SA/70与De-Al-HY催化甘油醛与乙醇反应中催化剂活化前后催化活性的对比.反应条件：1.25 mL含有0.4 mol/L苯甲酰甲醛或甘油醛的醇溶液加入0.05 g催化剂，在363 K下搅拌反应6 h[8]

Fig.9. Catalytic conversion of C3 sugars over ASAs. (a) Catalytic conversion of phenylglyoxal (―) and selectivity to alkyl mandelate (---) as a function of reaction time in MeOH (■), EtOH (●), i-PrOH (▼), n-PrOH (◆), n-BuOH (▲) over SA/70 and reaction in i-PrOH (★) over De-Al-HY[26]. (b) Catalytic glyceraldehyde conversion in ethanol over fresh De-Al-HY and SA/50 and after five recycle uses. Conditions: 1.25 mL of alcohol solution containing 0.4 mol/L phenylglyoxal or glyceraldehyde, 0.05 g catalyst, at 363 K for 6 h with stirring[8]