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Active oxygen species adsorbed on the catalyst surface and its effect on formaldehyde oxidation over Pt/TiO2 catalysts at room temperature; role of the Pt valence state on this reaction?
RSC Advances ( IF 3.9 ) Pub Date : 2018-01-18 00:00:00 , DOI: 10.1039/c7ra11294g Geo Jong Kim 1 , Sang Moon Lee 1 , Sung Chang Hong 1 , Sung Su Kim 1
RSC Advances ( IF 3.9 ) Pub Date : 2018-01-18 00:00:00 , DOI: 10.1039/c7ra11294g Geo Jong Kim 1 , Sang Moon Lee 1 , Sung Chang Hong 1 , Sung Su Kim 1
Affiliation
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Pt/TiO2 catalysts, prepared by reduction pretreatment, showed enhanced catalytic activities in formaldehyde oxidation. X-ray photoelectron spectroscopy analysis confirmed that catalytic activity was affected by Pt valence states in the Pt/TiO2 catalyst. Using O2 re-oxidation tests, we showed that there was a correlation between the area of oxygen consumed and the ratio of metallic Pt species on the catalyst surface. The O2 re-oxidation ability was involved in the production of the adsorbed formate intermediate from HCHO, confirmed through diffuse reflectance infrared Fourier transform spectroscopy analysis. Furthermore, metallic Pt species were involved in the oxidation of adsorbed CO to CO2.
中文翻译：
Pt/TiO2催化剂室温下催化剂表面吸附的活性氧及其对甲醛氧化的影响Pt 价态在此反应中的作用？
通过还原预处理制备的Pt/TiO 2催化剂在甲醛氧化中表现出增强的催化活性。 X射线光电子能谱分析证实Pt/TiO 2催化剂中的Pt价态影响催化活性。通过O 2再氧化测试，我们发现氧消耗面积与催化剂表面金属Pt物种的比例之间存在相关性。通过漫反射红外傅里叶变换光谱分析证实，O 2再氧化能力参与了从HCHO生成吸附甲酸盐中间体的过程。此外，金属Pt物质参与吸附的CO氧化成CO 2 。
更新日期：2018-01-18
中文翻译：
Pt/TiO2催化剂室温下催化剂表面吸附的活性氧及其对甲醛氧化的影响Pt 价态在此反应中的作用？
通过还原预处理制备的Pt/TiO 2催化剂在甲醛氧化中表现出增强的催化活性。 X射线光电子能谱分析证实Pt/TiO 2催化剂中的Pt价态影响催化活性。通过O 2再氧化测试，我们发现氧消耗面积与催化剂表面金属Pt物种的比例之间存在相关性。通过漫反射红外傅里叶变换光谱分析证实，O 2再氧化能力参与了从HCHO生成吸附甲酸盐中间体的过程。此外，金属Pt物质参与吸附的CO氧化成CO 2 。
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