Data-Driven Inference of Synthesis Guidelines for High-Performance Zeolite-Based Selective Catalytic Reduction Catalysts at Low Temperatures

催化作用 沸石 还原(数学) 推论 选择性催化还原 材料科学 化学工程 化学 计算机科学 有机化学 工程类 数学 人工智能 几何学
作者
Shinyoung Bae,Hwangho Lee,Jun‐Seop Shin,Hyun Sub Kim,Yeonsoo Kim,Do Heui Kim,Jong Min Lee
出处
期刊:Chemistry of Materials [American Chemical Society]
卷期号:34 (17): 7761-7773 被引量:6
标识
DOI:10.1021/acs.chemmater.2c01092
摘要

Numerous zeolite-based selective catalytic reduction (SCR) catalysts have been investigated to improve nitrogen oxide (NOx) removal efficiency at low temperatures of 25–200 °C in diesel vehicles. However, the majority of these studies examined only one of each feature's effects. The catalysis mechanism consists of complex reactions, and the various features interact, making it difficult to predict their combinatorial effects on the catalytic activity. Recently, machine learning-based models have been widely employed in catalysis science to infer hidden information about catalysts without knowledge of the underlying physical principles. Interpretable machine learning models are particularly useful for catalyst research because they can explain the causal relationship between characteristics and catalytic performance. In this study, we construct a machine learning model utilizing a decision tree, one of the representative interpretable machine learning models. Using this model, we evaluate the causal relationship between features and the NOx removal efficiency of zeolite-based SCR catalysts at low temperatures, which is difficult to deduce due to the high number of features. Additionally, we extract several synthesis guidelines for catalysts that show superior NOx removal performance at low temperatures. New catalysts were synthesized using the proposed rules, and their performance was validated experimentally.
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