JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE) ›› 2010, Vol. 40 ›› Issue (4): 121-124.

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Three-way catalyst for a natural-gas engine

ZHANG Qiang1, LI Na1, 2, LI Guo-xiang1   

  1. 1. School of Energy & Power Engineering, Shandong University, Jinan 250061, Chia;
    2. School of Mechanical Engineering, University of Jinan, Jinan 250022, China
  • Received:2009-12-18 Online:2010-08-16 Published:2009-12-18

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Abstract:

The special three-way catalyst for a natural-gas engine was studied by using noble metal Pd and a small amout of Pt as the activated composition. The light-off temperature, conversion efficiency and durability were studied by using different coating materials and activated assistants on the testing small sample catalyst evaluation system. The experimental results showed that Al2O3／SiO2 could be adopted as a coating material of the threeway catalyst for Si-Al-O had better resistance to sulfur poisoning and maximal conversion efficiency. The Co-Ce-Mn-O catalyst assistant could be used as an activated assistant for the best property data of the lightoff temperature and conversion efficiency.

Key words: natural-gas engine, catalyst, coating material, activated assistant

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