In situ generated catalyst: copper(ii) oxide and copper(i) supported on Ca2Fe2O5 for CO oxidation†,Catalysis Science & Technology

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In situ generated catalyst: copper(ii) oxide and copper(i) supported on Ca2Fe2O5 for CO oxidation†
Catalysis Science & Technology ( IF 4.4 ) Pub Date : 2018-09-03 00:00:00 , DOI: 10.1039/c8cy00806j
Bartosz Penkala _{1,

2,

3,

4,

5} , Suresh Gatla _{3,

6,

7} , Daniel Aubert _{1,

2,

3} , Monica Ceretti _{3,

4,

5,

8} , Caroline Tardivat _{1,

2,

3} , Werner Paulus _{3,

4,

5,

8} , Helena Kaper _{1,

2,

3}

Affiliation

Two sets of copper oxide–brownmillerite Ca₂Fe₂O₅ catalysts are prepared and studied for CO oxidation. The first set of catalysts is prepared by classical wet impregnation of the Ca₂Fe₂O₅ support. The second set is prepared by Ca₂Fe₂O₅ B-site doping. The active catalyst species are generated during hydrogen treatment. The two sets of catalysts behave very differently in CO oxidation. The performance of the impregnated catalysts is independent of the Cu content, while the performance of the doped catalysts can be tuned by the copper content. The best performing catalyst is a doped-reduced catalyst with 40 mol% Cu. Detailed characterization of the catalysts is carried out using nitrogen physisorption, X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS) and in situ X-ray absorption fluorescence spectroscopy (XAFS).

中文翻译：

原位生成的催化剂：氧化铜（ii）和负载在Ca ₂ Fe ₂ O ₅上的铜（i）用于CO氧化†

制备了两组氧化铜-褐煤Ca ₂ Fe ₂ O ₅催化剂，并进行了CO氧化研究。第一组催化剂是通过对Ca ₂ Fe ₂ O ₅载体进行经典的湿法浸渍而制备的。第二组由Ca ₂ Fe ₂ O ₅制备B站掺杂。活性催化剂在氢气处理过程中产生。两组催化剂在CO氧化中的行为非常不同。浸渍催化剂的性能与铜含量无关，而掺杂催化剂的性能可以通过铜含量来调节。表现最好的催化剂是具有40 mol％Cu的掺杂还原催化剂。催化剂的详细表征使用氮物理吸附，X射线衍射（XRD），X射线光电子能谱（XPS）和原位X射线吸收荧光光谱（XAFS）进行。

更新日期：2018-09-03

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