能源化学(英文版)

能源化学(英文) ›› 2003, Vol. 12 ›› Issue (4): 243-246.

• Articles • 上一篇    下一篇

Effect of Temperature on the Deactivation of a Pd-Fe/Al2O3 Catalyst for CO Coupling to Diethyl Oxalate

Jingang Fang, Zhenghua Li, Genhui Xu, Baowei Wang, Tieli Xiang   

  1. Key Lab of Green Chemical Technology, School of Chemical Engineering, Tianjin University, Tianjin 300072, China
  • 出版日期:2003-12-30 发布日期:2003-12-30

Effect of Temperature on the Deactivation of a Pd-Fe/Al2O3 Catalyst for CO Coupling to Diethyl Oxalate

Jingang Fang, Zhenghua Li, Genhui Xu, Baowei Wang, Tieli Xiang   

  • Online:2003-12-30 Published:2003-12-30

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摘要： Destructive tests of the catalyst was carried out to study the e ect of temperature on the catalytic activity of CO coupling to diethyl oxalate (DEO) over a Pd-Fe/Al2O3 catalyst. It was found that a temperature jump could cause the deactivation of the Pd-Fe/ -Al2O3 catalyst. The catalyst deactivated at di erent temperatures has di erent characteristics. After deactivation the crystal structure of -Al2O3 did not change, but the Pd particle size was enlarged. Most of the Pd0 were oxidized to Pd2+, and Fe2+ was oxidized to Fe3+ on the surface of the deactivated catalyst. The catalyst could be regenerated, but its original activity could not be recovered completely.

关键词: accelerating deactivation test, diethyl oxalate, palladium, carbon monoxide

Abstract: Destructive tests of the catalyst was carried out to study the e ect of temperature on the catalytic activity of CO coupling to diethyl oxalate (DEO) over a Pd-Fe/Al2O3 catalyst. It was found that a temperature jump could cause the deactivation of the Pd-Fe/ -Al2O3 catalyst. The catalyst deactivated at di erent temperatures has di erent characteristics. After deactivation the crystal structure of -Al2O3 did not change, but the Pd particle size was enlarged. Most of the Pd0 were oxidized to Pd2+, and Fe2+ was oxidized to Fe3+ on the surface of the deactivated catalyst. The catalyst could be regenerated, but its original activity could not be recovered completely.

Key words: accelerating deactivation test, diethyl oxalate, palladium, carbon monoxide