Study on the Regeneration of Quaternary Ammonium Heteropolyphosphatotungstate Catalyst

Abstract:

The quaternary ammonium heteropolyphosphatetungstate compound is proved as a promising catalyst to accelerate the synthesis of epoxidized soybean oil (ESO). As to enhance the efficiency of the catalyst, this paper investigated the process of regeneration of deactivated catalyst (DC) from reaction system of ESO. The single factor experiments were carried out to optimize the regeneration conditions and the optimize process conditions were as follows: acid solution at pH 3, m (deactivated catalyst):m (H₂O₂):m (H₃PO₄):m (cetylpyridiniumammonium chloride)=10:5:1:1,and stirred via mechanical and ultrasound agitation . Under above conditions, the epoxy value (≥6.0 %) of ESO which were catalyzed by generated catalyst and yield (≥92 %) were achieved.The results indicate that the activity of regenerated catalysts remain the same as that of the fresh catalysts and certify the economic feasibility of the process.

• Periodical: Advanced Materials Research (Volumes 1004-1005)
• Pages: 1000-1004
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.1004-1005.1000
• Online since: August 2014
• Authors: Xiao Zhu Lu, Guo Qin Liu*, Xin Qi Liu, Lu Jing
• Keywords: Epoxidized, Quaternary Ammonium Heteropolyphosphatetungstate, Regeneration

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