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Thermal behaviors of deactivation catalysts for synthesizing 2, 3, 5-trimethylhydroquinone

  • Qian Dong Email author
  • Shi Ai-hua 
  • Chen Qi-yuan 
  • Liu Zhi-jian 
Mineral Processing, Metallurgy And Chemistry

Abstract

The thermal behaviors of the deposits on supported noble metal catalysts for synthesizing 2, 3, 5-trimethylhydroquinone by DSC were studied. The results show that the supported Pd catalysts have two exothermic peaks at around 312 °C and 435 °C in the DSC thermograms, respectively, while the supported Pt catalysts have one exothermic peak at approximately 345 °C. Therefore, it is supposed that the adsorptive states of deposits on supported Pt catalysts and supported Pd catalysts are different, which may be one reason leading to the stability difference between supported Pt catalysts and supported Pd catalysts.

Key words

deposit supported Pd catalysts supported Pt catalysts DSC 

CLC number

O643.1 O643.38 

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Copyright information

© Central South University 2005

Authors and Affiliations

  • Qian Dong 
    • 1
    • 2
    • 3
    Email author
  • Shi Ai-hua 
    • 1
  • Chen Qi-yuan 
    • 1
  • Liu Zhi-jian 
    • 2
  1. 1.School of Chemistry and Chemical EngineeringCentral South UniversityChangshaChina
  2. 2.State Key Laboratory of Powder MetallurgyCentral South UniversityChangshaChina
  3. 3.Sinopec Changling Catalyst DivisionYueyangChina

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