Enhanced activity and hydrothermal stability of Rh-based three-way catalyst for emission control from motorcycles with the assistance of monoethanolamine

被引：14
作者：
Lan, Li [1 ]
Wang, Jinfeng [2 ]
Chen, Shanhu [2 ]
Li, Dacheng [2 ]
Li, Hongmei [1 ]
Liu, Dayu [1 ,3 ]
Wang, Wei [1 ,3 ]
Chen, Yaoqiang [4 ]
机构：
[1] Chengdu Univ, Coll Pharm & Biol Engn, Chengdu 610106, Sichuan, Peoples R China
[2] Sinocat Environm Technol Co Ltd, Chengdu 611731, Sichuan, Peoples R China
[3] Chengdu Univ, Sichuan Prov Key Lab Meat Proc, Chengdu 610106, Sichuan, Peoples R China
[4] Sichuan Univ, Coll Chem, Chengdu 610064, Sichuan, Peoples R China
来源：
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY | 2019年 / 71卷
关键词：
Rh/CeO2-ZrO2; Monoethanolamine; Dispersion; Oxidation state; Three-way catalytic activity; ZIRCONIA SOLID-SOLUTION; THERMAL-STABILITY; SUPPORTED RH; MIXED OXIDES; PD; CERIA; CO; PERFORMANCE; DISPERSION; REDUCTION;
D O I：
10.1016/j.jiec.2018.11.014
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
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. (C) 2018 The Korean Society of industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved.
引用
收藏
页码：127 / 136
页数：10
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