화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Journal of Industrial and Engineering Chemistry, Vol.71, 127-136, March, 2019
DOI10.1016/j.jiec.2018.11.014  Export Citation
Enhanced activity and hydrothermal stability of Rh-based three-way catalyst for emission control from motorcycles with the assistance of monoethanolamine
Li Lan1, Jinfeng Wang2, †, Shanhu Chen2, †, Dacheng Li2, Hongmei Li1, Dayu Liu1, 3, Wei Wang1, 3, and Yaoqiang Chen4
  • 1College of Pharmacy and Biological Engineering, Chengdu University, Chengdu 610106, China
  • 2Sinocat Environmental Technology Co., Ltd., Chengdu 611731, China
  • 3Sichuan Province Key Laboratory of Meat Processing, Chengdu University, Chengdu 610106, China
  • 4College of Chemistry, Sichuan University, Chengdu 610064, China
E-mail:,
In this work, an advanced Rh/CeO2.ZrO2 (Rh/CZ) three-way catalyst was synthesized with the assistance of monoethanolamine. Compared with conventional Rh/CZ, the dispersion and oxidation state of Rh species, as well as the hydrothermal aging resistance are remarkably modified. That is, upon aging treatment, conventional Rh/CZ undergoes severe agglomeration of Rh species and formation of large amount of reduction-resistive RhO2, resulting in serious catalyst deactivation. Fortunately, after the introduction of monoethanolamine, the sintering of Rh species and transformation into inactive RhO2 upon aging are effectively suppressed. Consequently, improved reducibility and advanced three-way catalytic activity are achieved for the modified catalyst.
Keywords:Rh/CeO2-ZrO2;Monoethanolamine;Dispersion;Oxidation state;Three-way catalytic activity
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