Synthesis and catalytic properties of nickel salts of Keggin-type heteropolyacids embedded metal-organic framework hybrid nanocatalyst

Green Processing and Synthesis

article

Qiuyun Zhang¹  Dan Ling¹  Dandan Lei¹  Taoli Deng¹  Yutao Zhang²  Peihua Ma³ 

[1] School of Chemistry and Chemical Engineering, Anshun University;Engineering Technology Center of Control and Remediation of Soil Contamination of Provincial Science & Technology Bureau, Anshun University;School of Chemistry and Chemical Engineering, Guizhou University

关键词: heteropolyacid salts;    UiO-66;    nanocatalyst;    esterification;    biodiesel;   

DOI  :  10.1515/gps-2020-0014

来源: De Gruyter

【 摘 要 】

Nickel salts of Keggin-type heteropolyacid on Zr(IV)-based metal-organic frameworks (UiO-66) has been synthesized via ion-exchange followed by a facile one-pot hydrothermal method. The synthesized catalysts underwent FT-IR, N 2 adsorption-desorption, powder XRD, SEM and TEM analysis. The NiHSiW/UiO-66 catalyst was used as a new and effective solid acid in the catalytic transfer free fatty acid to biodiesel with an optimum conversion of 86.7%. The excellent activity of the NiHSiW/UiO-66 nanocatalyst was closely related to its high specific surface area, nano-sized catalyst, and the synergistic effects of NiHSiW salts and UiO-66 matrix. Importantly, a relatively stable catalytic performance was achieved for 8 repeated cycles. Finally, kinetics of the esterification reaction have been assumed to be of pseudo first order.

【 授权许可】

CC BY