Complete oxidation of formaldehyde over TiO2 supported subnanometer Rh catalyst at ambient temperature

doi:10.1016/j.apcatb.2018.01.011

	Complete oxidation of formaldehyde over TiO2 supported subnanometer Rh catalyst at ambient temperature
	Sun, Xiucheng 1,2; Lin, Jian 1; Guan, Hongling 3; Li, Lin 1; Sun, Li 1,2; Wang, Yuehan 1; Miao, Shu 1; Su, Yang 1; Wang, Xiaodong 1
刊名	APPLIED CATALYSIS B-ENVIRONMENTAL
	2018-06-15
卷号	226 页码:575-584
关键词	Formaldehyde Rhodium Tio2 Formates Oxidation
ISSN号	0926-3373
DOI	10.1016/j.apcatb.2018.01.011
文献子类	Article
英文摘要	Catalytic 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.
WOS关键词	ROOM-TEMPERATURE ; CO OXIDATION ; PT/TIO2 CATALYST ; METAL-CATALYSTS ; HCHO OXIDATION ; FORMIC-ACID ; PERFORMANCE ; ADSORPTION ; DECOMPOSITION ; REMOVAL
WOS研究方向	Chemistry ; Engineering
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000425476800058
内容类型	期刊论文
源URL	[http://cas-ir.dicp.ac.cn/handle/321008/168670]
专题	大连化学物理研究所_中国科学院大连化学物理研究所
通讯作者	Lin, Jian; Wang, Xiaodong
作者单位	1.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
推荐引用方式 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.