Simultaneous Reduction of NOX and CO Harmful Gases According to the Promoters and Support Types of H2-SCR Catalyst

IF 1.5 4区工程技术 Q3 ENGINEERING, MECHANICAL

International Journal of Automotive Technology Pub Date : 2024-02-20 DOI:10.1007/s12239-024-00006-w

Choong-kil Seo

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Abstract

The purpose of this study is to simultaneously reduce NO_X and CO harmful gases according to the promoters and support types of the H₂-SCR. The 0.5Pt-2CeO₂-5Ru/TiO₂ catalyst loaded with 7 wt% Ru showed a lower NO_X conversion rate compared to than the 0.5Pt-2CeO₂/TiO₂ (STD), but the window shifted to the right, and it showed NO_X reduction performance of up to 30% at 175 °C. When Zr was loaded, de- NO_X performance was not improved at the temperature of 200 °C starting from a low catalyst temperature of 75 °C. With in the influence of the support types, the 0.5Pt-2CeO₂/TiO₂ H₂-SCR catalyst showed the highest NO_X conversion rate below 125 °C, and the low-temperature activity of NO_X was higher than that of the three zeolite-loaded H₂-SCR catalysts. Low temperature activity was improved because the TiO₂ has excellent reducing and oxidizing ability. Among the three zeolites, the CO reduction performance of the 0.5Pt-2CeO₂/Zeolite (1) catalyst with high Al content was the lowest.

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根据 H2-SCR 催化剂的促进剂和支持类型同时减少 NOX 和 CO 有害气体

本研究的目的是根据 H2-SCR 的促进剂和载体类型，同时减少 NOX 和 CO 有害气体。与 0.5Pt-2CeO2/TiO2 催化剂（STD）相比，负载 7 wt% Ru 的 0.5Pt-2CeO2-5Ru/TiO2 催化剂的 NOX 转化率较低，但窗口向右移动，在 175 ℃ 时 NOX 减排性能高达 30%。当负载 Zr 时，从 75 ℃ 的低催化剂温度开始，在 200 ℃ 的温度下，脱 NOX 性能没有得到改善。受载体类型的影响，0.5Pt-2CeO2/TiO2 H2-SCR 催化剂在 125 ℃ 以下的 NOX 转化率最高，NOX 的低温活性也高于三种沸石负载型 H2-SCR 催化剂。低温活性提高的原因是 TiO2 具有优异的还原和氧化能力。在三种沸石中，高铝含量的 0.5Pt-2CeO2/ 沸石 (1) 催化剂的 CO 还原性能最低。

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来源期刊

International Journal of Automotive Technology 工程技术-工程：机械

CiteScore

3.10

自引率

12.50%

发文量

129

审稿时长

6 months

期刊介绍： The International Journal of Automotive Technology has as its objective the publication and dissemination of original research in all fields of AUTOMOTIVE TECHNOLOGY, SCIENCE and ENGINEERING. It fosters thus the exchange of ideas among researchers in different parts of the world and also among researchers who emphasize different aspects of the foundations and applications of the field. Standing as it does at the cross-roads of Physics, Chemistry, Mechanics, Engineering Design and Materials Sciences, AUTOMOTIVE TECHNOLOGY is experiencing considerable growth as a result of recent technological advances. The Journal, by providing an international medium of communication, is encouraging this growth and is encompassing all aspects of the field from thermal engineering, flow analysis, structural analysis, modal analysis, control, vehicular electronics, mechatronis, electro-mechanical engineering, optimum design methods, ITS, and recycling. Interest extends from the basic science to technology applications with analytical, experimental and numerical studies. The emphasis is placed on contributions that appear to be of permanent interest to research workers and engineers in the field. If furthering knowledge in the area of principal concern of the Journal, papers of primary interest to the innovative disciplines of AUTOMOTIVE TECHNOLOGY, SCIENCE and ENGINEERING may be published. Papers that are merely illustrations of established principles and procedures, even though possibly containing new numerical or experimental data, will generally not be published. When outstanding advances are made in existing areas or when new areas have been developed to a definitive stage, special review articles will be considered by the editors. No length limitations for contributions are set, but only concisely written papers are published. Brief articles are considered on the basis of technical merit.