Synthesis, Characterization and Catalytic Performance of a Novel Picolinic Acid-12-Molybdophosphoric Acid Hybrid Catalyst

Journal of the Brazilian Chemical Society

Wang, Honghong¹  Liaocheng University, Liaocheng, China¹  Gong, Shuwen¹  Lu, Jing¹  Zhang, Qian¹  Liu, Lijun¹ 

关键词:  heteropoly acid;    picolinic acid;    heterogeneous catalysis;    acid catalyst;    esterification;   

DOI  :  10.5935/0103-5053.20150356

学科分类：化学（综合）

来源: SciELO

【 摘 要 】

A novel 12-molybdophosphoric acid (HPM)-based complex (H2PI)2(H3O)[PMo12O40][Mo2O5(H2O)2(PI)2]·11H2O (PI-HPM) was prepared by modification with picolinic acid (HPI) and characterized by the methods of Fourier transform infrared (FTIR) spectroscopy, thermogravimetry (TG), X-ray powder and single crystal diffraction. The complex retained the classical Keggin structure of bulk HPM, there were some strong hydrogen bonds existing between the [PMo12O40]3- polyanion, the [Mo2O5(H2O)2(PI)2] coordination moiety, the protonated HPI and the lattice water molecules. Then PI-HPM was employed as heterogeneous catalyst for esterification reaction to evaluate its acid-catalytic activity. The complex exhibited high activity and good durability in reaction mixtures, indicating that it was a promising heterogeneous acid catalyst for esterification that including the conversion of oleic acid to oleates.

【 授权许可】

Unknown