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PdIn-Based Pseudo-Binary Alloy as a Catalyst for NOx Removal under Lean Conditions
ACS Catalysis ( IF 12.9 ) Pub Date : 2020-09-14 , DOI: 10.1021/acscatal.0c03427
Jaewan Jeon 1 , Hyungwon Ham 1 , Feilong Xing 1 , Yuki Nakaya 1 , Ken-ichi Shimizu 1, 2 , Shinya Furukawa 1, 2, 3
Affiliation  

Developing a noble-metal-based catalyst that works effectively for NOx removal in the presence of excess O2 is still a big challenge in catalytic chemistry for exhaust gas purification. To overcome this challenge, in this study, we designed and prepared a nanoparticulate (Pd1–xPtx)In pseudobinary alloy using Al2O3 and CeO2 supports, where a portion of Pd was replaced with Pt to improve the oxidation tolerance of In during NOx reduction under lean conditions. Multiple characterization techniques were used to confirm the formation of the desired pseudobinary alloy phase. The prepared Pd–Pt–In/CeO2 catalyst exhibited high NO conversion to N2 in NO–CO–O2 reaction with a wide range of oxygen concentrations including lean conditions (80%–100%, 0.75 ≤ λ ≤ 1.5, 350 °C) and retained its catalytic performance during rich–lean cycles.

中文翻译:

PDIN基于伪二元合金作为催化剂的NO X在贫条件移除

在存在过量的O 2的情况下,开发有效地用于NO x去除的贵金属基催化剂仍然是用于废气净化的催化化学中的一大挑战。为了克服这一挑战,在本研究中,我们设计和制备了使用Al 2 O 3和CeO 2载体的准二元合金纳米颗粒(Pd 1– x Pt x),其中部分Pd被Pt代替以提高耐氧化性在稀薄条件下还原NO x期间的In含量。使用多种表征技术来确认所需假二元合金相的形成。制备的Pd–Pt–In / CeO 2催化剂在NO–CO–O 2反应中表现出高的NO转化为N 2的能力,并且在较宽的氧气浓度范围内(包括稀薄条件)(80%–100%,0.75≤λ≤1.5,350°C),并在富氧期间保持其催化性能。 –精益周期。
更新日期:2020-10-02
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