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首页> 外文期刊>Catalysis science & technology >Ce_(0.5)Zr_(0.4)Sn_(0.1)O2/Al2O3 catalysts with enhanced oxygen storage capacity and high CO oxidation activity
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Ce_(0.5)Zr_(0.4)Sn_(0.1)O2/Al2O3 catalysts with enhanced oxygen storage capacity and high CO oxidation activity

机译：CE_（0.5）ZR_（0.4）SN_（0.1）O2/AL2O3催化剂具有增强的氧气存储能力和高CO氧化活性

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摘要

Ce_(0.5)Zr_(0.4)Sn_(0.1)O2/Al2O3 catalysts were prepared by a coprecipitation route using Ce(NH4)2(NO3)6, Zr(NO3)3·2H2O, SnCl4·5H2O and Al2O3 as the starting materials, and were evaluated as a promoter in automotive catalysis by X-ray diffraction, transmission electron microscopy and the Brunauer-Emmet-Teller (BET) technique. The oxygen storage capacity (OSC) values of the samples were measured using thermogravimetric-differential thermal analysis at 600 °C with a continuous flow of CO-N2 gas and air alternately. The CO oxidation activity of the synthesized sample was evaluated via a gas FTIR spectrometer for analysis of gas compositions. The Ce_(0.5)Zr_(0.4)Sn_(0.1)O2/γ-Al2O3 composite possessed excellent thermal stability, enhanced OSC values, and high CO oxidation activity at the low temperatures even after calcination at 1000 °C for 20 h.
机译：CE_（0.5）ZR_（0.4）SN_（0.1）O2/Al2O3催化剂是通过使用CE（NH4）2（NO3）6，ZR（NO3）3·2H2O，SNCL4·5H2O和Al2O3作为起始材料作为起始材料的ce催化剂。 ，并通过X射线衍射，透射电子显微镜和Brunauer-Emmet-Teller（BET）技术评估为汽车催化中的启动子。 在600°C下使用热重差分差的热分析测量样品的氧储存能力（OSC）值，并连续流动CO-N2气体和空气。 通过气体FTIR光谱仪评估合成样品的CO氧化活性，以分析气体成分。 CE_（0.5）ZR_（0.4）SN_（0.1）O2/γ-Al2O3复合材料具有出色的热稳定性，增强的OSC值和高温在1000°C下的低温氧化活性20小时。

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