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Synthesis of Cyclohexanone-formaldehyde　Resin Catalyzed by Rehydrated Mg-Al Hydrotalcite
Yang Guo #,Jiang Junqing,Zhang Yanwu *
School of Chemical Engineering and Energy, Zhengzhou University, ZhengZhou 450001
*Correspondence author
#Submitted by
Subject:
Funding: Key Scientific Research Project of Chinese Education Ministry （No.212107）, National Natural Science Foundation of China（No.50903074）
Opened online: 7 March 2014
Accepted by: none
Citation: Yang Guo,Jiang Junqing,Zhang Yanwu.Synthesis of Cyclohexanone-formaldehyde　Resin Catalyzed by Rehydrated Mg-Al Hydrotalcite[OL]. [ 7 March 2014] http://en.paper.edu.cn/en_releasepaper/content/4587728
 
 
Cyclohexanone-formaldehyde resin (CFR) was synthesized over rehydrated Mg-Al hydrotalcite (HT). Therein, Mg-Al HT was rehydrated from Mg-Al HT of good crystallinity using a liquid method. Rehydrated Mg-Al HT (HT-r) shows good catalytic activity for aldol condensation. In the synthesis of CFR catalyzed by HT-r, hexadecyl trimethyl ammonium bromide (CTAB) as a phase transfer catalyst was introduced to enhance the mass transfer. Both higher temperature and longer reaction time are preferable to increase the molecular weight of CFR. Though the catalytic activity of HT-r decreases as the reutilization cycle increases, the deactivated HT-r can be easily regenerated upon calcining and rehydrating.
Keywords:Aldol condensation; Cyclohexanone-formaldehyde　resin; Mg-Al hydrotalcite
 
 
 

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