可磁性回收纳米级负载型杂多酸催化剂用于水中生物活性化合物的绿色合成(英文)

• 作 者: Ezzat Rafiee Sara Eavani Maryam Khodayari
• 机 构: Faculty of Chemistry,Razi University,Kermanshah,67149,Iran,
• 出 处: 催化学报
• 发表日期: 2013年08期
• 关键词: 杂多酸催化剂 负载型 silica 生物活性化合物 绿色合成 reused coated recovered aldehydes inductively

12‐Tungstophosphoric acid supported on aerosil silica and silica‐coated γ‐Fe2O3 nanoparticles was prepared and characterized using transmission electron microscopy,scanning electron microscopy,and inductively coupled plasma atomic emission spectroscopy.The catalytic activity of the two prepared catalysts was compared in the synthesis of 1,8‐dioxo‐9,10‐diaryldecahydroacridines in water.12‐Tungstophosphoric acid was highly dispersed on the silica‐coated γ‐Fe2O3 nanoparticles and showed higher activity and a higher reuse number compared with the acid supported on aerosil silica.The catalyst could be recovered simply by using an external magnetic field and could be reused several times without appreciable loss of its catalytic activity.

12-Tungstophosphoric acid supported on aerosil silica and silica-coated γ-Fe2O3 nanoparticles was prepared and characterized using transmission electron microscopy, scanning electron microscopy, and inductively coupled plasma atomic emission spectroscopy. The catalytic activity of the two prepared catalysts was compared in the synthesis of 1,8-dioxo-9,10-diaryldecahydroacridines in water.12-Tungstophosphoric acid was highly dispersed on the silica-coated γ-Fe2O3 nanoparticles and showed higher activity and a higher reuse number than with the acid supported on aerosil silica. catalyst could be recovered simply by using an external magnetic field and could be reused several times without appreciable loss of its catalytic activity.