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一种用于在氧化条件下用CO和萘对NO进行瞬态还原的高活性Ca/Cu/YCeO-TiO催化剂。

A highly active Ca/Cu/YCeO-TiO catalyst for the transient reduction of NO with CO and naphthalene under oxidizing conditions.

作者信息

Sánchez Luis, Aguila Gonzalo, Araya Paulo, Quijada Sergio, Guerrero Sichem

机构信息

Departamento de Ingeniería Química, Biotecnología y Materiales, Universidad de Chile Casilla 2777 Santiago Chile.

Universidad de los Andes, Chile, Facultad de Ingeniería y Ciencias Aplicadas Monseñor Álvaro del Portillo 12455 Las Condes Chile

出版信息

RSC Adv. 2021 Dec 14;11(63):39896-39906. doi: 10.1039/d1ra08412g. eCollection 2021 Dec 13.

DOI:10.1039/d1ra08412g
PMID:35494136
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9044585/
Abstract

The transient combustion of biomass leads to the evolution of a variety of pollutants (NO, CO, organic compounds, and many others) that can react with each other on a suitable catalyst to generate compounds of lower toxicity. Here, the transient reduction of NO with CO and naphthalene in the presence of oxygen was studied on a Ca/Cu/YCeO-TiO catalyst. Response surface methodology was used to identify the optimum amounts of calcium, copper, and cerium. The optimized Ca/Cu/YCeO-TiO catalyst was then extensively studied and characterized. The coupling of yttrium-stabilized ceria with TiO provided an active support that effectively activated naphthalene. When calcium and copper were added to the support, the obtained Ca/Cu/YCeO-TiO catalyst achieved the full conversion of CO and naphthalene and 72% conversion of NO. The Ca/Cu/YCeO-TiO catalyst possessed labile oxygen species, which might be related to the high catalytic activity.

摘要

生物质的瞬态燃烧会产生多种污染物（一氧化氮、一氧化碳、有机化合物等），这些污染物在合适的催化剂上会相互反应，生成毒性较低的化合物。在此，在Ca/Cu/YCeO-TiO催化剂上研究了在氧气存在下一氧化氮与一氧化碳和萘的瞬态还原反应。采用响应面法确定钙、铜和铈的最佳用量。然后对优化后的Ca/Cu/YCeO-TiO催化剂进行了广泛研究和表征。钇稳定二氧化铈与二氧化钛的耦合提供了一种能有效活化萘的活性载体。当向载体中添加钙和铜时，所得的Ca/Cu/YCeO-TiO催化剂实现了一氧化碳和萘的完全转化以及一氧化氮72%的转化率。Ca/Cu/YCeO-TiO催化剂具有不稳定的氧物种，这可能与高催化活性有关。

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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/70bf/9044585/f126d328a3fe/d1ra08412g-f8.jpg
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