Alkali alpha-MnO2/NaxMnO2 collaboratively catalyzed ammoxidation-Pinner tandem reaction of aldehydes

doi:10.1039/c6cy00874g

	Alkali alpha-MnO2/NaxMnO2 collaboratively catalyzed ammoxidation-Pinner tandem reaction of aldehydes
	Li, Xiaofang 1,2; Xu, Jie 1; Jia, Xiuquan 1,2; Ma, Jiping 1; Wang, Min 1; Gaoa, Jin 1
刊名	CATALYSIS SCIENCE & TECHNOLOGY
	2016
卷号	6 期号:20 页码:7429-7436
ISSN号	2044-4753
DOI	10.1039/c6cy00874g
文献子类	Article
英文摘要	The tandem reaction is a growing field to yield important advances toward green and sustainable chemistry. Herein, we report a bifunctional manganese oxide catalyst with an interface binding redox phase (alpha-MnO2) and a basic phase (NaxMnO2). The molar ratio of NaOH/Mn plays a great role in the formation of alpha-MnO2/NaxMnO2. The sodium cation is essential for the formation of a basic NaxMnO2 phase while the potassium cation promotes the formation of a redox-active alpha-MnO2 phase. The interface structure of alpha-MnO2/NaxMnO2 geometrically favors the ammoxidation-Pinner tandem reaction to synthesize imidates in a 58-96% yield from aldehydes. Thus a phase collaborative effect is observed. In the ammoxidation process, the redox cycle of Mn-IV/Mn-III is involved and the lattice oxygen in the alpha-MnO2 phase acts as an active oxygen species. The O-H in methanol is activated and dissociated on the basic sites of NaxMnO2 to the adsorbed methoxyl species to facilitate the Pinner synthesis. This approach bypasses the conventional synthesis of imidates, which suffer from harsh reaction conditions and the requirement for multiple steps.
WOS关键词	PNEUMOCYSTIS-CARINII PNEUMONIA ; AEROBIC OXIDATION ; ION BATTERIES ; NITRILES ; MNO2 ; 2,5-DIFORMYLFURAN ; PENTAMIDINE ; HYDROLYSIS ; ELECTRODES ; CONVERSION
WOS研究方向	Chemistry
语种	英语
出版者	ROYAL SOC CHEMISTRY
WOS记录号	WOS:000386210100007
内容类型	期刊论文
源URL	[http://cas-ir.dicp.ac.cn/handle/321008/169946]
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	Xu, Jie; Ma, Jiping
作者单位	1.Chinese Acad Sci, Dalian Natl Lab Clean Energy, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Li, Xiaofang,Xu, Jie,Jia, Xiuquan,et al. Alkali alpha-MnO2/NaxMnO2 collaboratively catalyzed ammoxidation-Pinner tandem reaction of aldehydes[J]. CATALYSIS SCIENCE & TECHNOLOGY,2016,6(20):7429-7436.
APA	Li, Xiaofang,Xu, Jie,Jia, Xiuquan,Ma, Jiping,Wang, Min,&Gaoa, Jin.(2016).Alkali alpha-MnO2/NaxMnO2 collaboratively catalyzed ammoxidation-Pinner tandem reaction of aldehydes.CATALYSIS SCIENCE & TECHNOLOGY,6(20),7429-7436.
MLA	Li, Xiaofang,et al."Alkali alpha-MnO2/NaxMnO2 collaboratively catalyzed ammoxidation-Pinner tandem reaction of aldehydes".CATALYSIS SCIENCE & TECHNOLOGY 6.20(2016):7429-7436.