Inorganic Chemicals Industry ›› 2024, Vol. 56 ›› Issue (6): 147-152.doi: 10.19964/j.issn.1006-4990.2023-0517

• Catalytic Materials • Previous Articles    

Preparation of Zn/Co-ZIF derived porous carbon supported Pd as catalyst and its application to formic acid dehydrogenation

LIU Qingcui(), LI Yunqing, PANG Ruiqi, TIAN Yaping, CHEN Yiying, LI Fang(), LI Qiming()   

  1. School of Chemical Engineering,Liaoning Petrochemical University,Fushun 113001,China
  • Received:2023-10-30 Online:2024-06-10 Published:2024-06-20
  • Contact: LI Fang, LI Qiming E-mail:2675329910@qq.com;lflamp@163.com;lqm_dicp@163.com

Abstract:

Highly active Ag1Pd7@HPNC catalyst were obtained through anchoring Ag and Pd on Zn/Co-ZIF derived nitrogen-doped porous carbon(HPNC),which was obtained by HNO3 immersion and(NH42HPO4 phosphating.Zn/Co-ZIF,porous carbon supports and prepared catalysts were characterized and systematically analyzed by a series of characterization methods such as XRD,TEM,SEM and EDS,etc.The results showed that Zn and most of Co species in porous carbon could be effectively removed by high-temperature sintering and acidification treatment,and small-size Pd and Ag nanoparticles could be efficiently loaded on the surface of HPNC porous carbon carriers.By exploring the effects of different catalyst supports and different mAgmPd on the catalyst catalysts,it was demonstrated that the Ag1Pd7@HPNC catalysts had excellent formic acid catalytic activity.The formic acid dehydrogenation experiment showed that the catalytic activity of Pd@HPNC treated by(NH42HPO4 was superior to that of untreated Pd@HNC catalyst,and the catalytic activity of Ag x Pd y @HPNC (x>0) prepared by doping Ag species had been further improved.When the mass ratio of mAgmPd=1∶7,the catalytic activity of Ag1Pd7@HPNC for formic acid decomposition was optimal with a turnover frequency(TOF) of 1 025 h-1 for formic acid at 318 K,and the catalyst was recycled for five times with the TOF value of 920 h-1,indicating its good recycling stability.Ag1Pd7@HPNC showed a good application prospect to formic acid dehydrogenation.

Key words: formic acid, hydrogen production, ZIF, Pd catalyst, porous carbon

CLC Number: