DICP OpenIR
Complete oxidation of formaldehyde over TiO2 supported subnanometer Rh catalyst at ambient temperature
Sun, Xiucheng1,2; Lin, Jian1; Guan, Hongling3; Li, Lin1; Sun, Li1,2; Wang, Yuehan1; Miao, Shu1; Su, Yang1; Wang, Xiaodong1
KeywordFormaldehyde Rhodium Tio2 Formates Oxidation
Source PublicationAPPLIED CATALYSIS B-ENVIRONMENTAL
2018-06-15
ISSN0926-3373
DOI10.1016/j.apcatb.2018.01.011
Volume226Pages:575-584
Indexed BySCI
SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences ; Technology
WOS SubjectChemistry, Physical ; Engineering, Environmental ; Engineering, Chemical
WOS Research AreaChemistry ; Engineering
WOS KeywordROOM-TEMPERATURE ; CO OXIDATION ; PT/TIO2 CATALYST ; METAL-CATALYSTS ; HCHO OXIDATION ; FORMIC-ACID ; PERFORMANCE ; ADSORPTION ; DECOMPOSITION ; REMOVAL
AbstractCatalytic oxidation of formaldehyde (HCHO) to CO2 and H2O under ambient condition is highly desired for purifying indoor air quality. In this work, it was found for the first time that TiO2 supported subnanometer Rh catalyst exhibited a remarkable activity with complete removal of HCHO at room temperature. The humidity under ambient condition can significantly improve the activityi stability and specific rates but result in lower activation energy for the oxidation of HCHO on this catalyst. A combination of characterizations, such as H-2 temperature programmed reduction, adsorption microcalorimetry and in situ diffuse reflectance infrared Fourier transform spectroscopy, demonstrated the importance of Rh species for the dissociative adsorption of O-2 and the key role of water on the oxidation of HCHO. The O atoms facilitated the transformation of HCHO adsorbed on TiO2 into intermediate of formates, while the presence of water led to the production of hydroxyl probably from the reaction with the adsorbed O species, which promoted the decomposition of formates to CO2. This study can provide an important implication into the design and fabrication of more economic Rh-based catalysts for ambient HCHO oxidation.
Language英语
WOS IDWOS:000425476800058
PublisherELSEVIER SCIENCE BV
Citation statistics
Document Type期刊论文
Identifierhttp://cas-ir.dicp.ac.cn/handle/321008/168671
Collection中国科学院大连化学物理研究所
Corresponding AuthorLin, Jian; Wang, Xiaodong
Affiliation1.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Zhengzhou Univ, Sch Chem Engn & Energy, Res Ctr Heterogeneous Catalysis & Engn Sci, Zhengzhou 450001, Henan, Peoples R China
Recommended Citation
GB/T 7714
Sun, Xiucheng,Lin, Jian,Guan, Hongling,et al. Complete oxidation of formaldehyde over TiO2 supported subnanometer Rh catalyst at ambient temperature[J]. APPLIED CATALYSIS B-ENVIRONMENTAL,2018,226:575-584.
APA Sun, Xiucheng.,Lin, Jian.,Guan, Hongling.,Li, Lin.,Sun, Li.,...&Wang, Xiaodong.(2018).Complete oxidation of formaldehyde over TiO2 supported subnanometer Rh catalyst at ambient temperature.APPLIED CATALYSIS B-ENVIRONMENTAL,226,575-584.
MLA Sun, Xiucheng,et al."Complete oxidation of formaldehyde over TiO2 supported subnanometer Rh catalyst at ambient temperature".APPLIED CATALYSIS B-ENVIRONMENTAL 226(2018):575-584.
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