Superior acidic catalytic activity and stability of Fe-doped HTaWO6 nanotubes
Type
ArticleAuthors
Liu, HeZhang, Haitao

Fei, Linfeng

Ma, Hongbin
Zhao, Guoying
Mak, CheeLeung
Zhang, Xixiang

Zhang, Suojiang

KAUST Department
Material Science and Engineering ProgramPhysical Science and Engineering (PSE) Division
Date
2017Permanent link to this record
http://hdl.handle.net/10754/625705
Metadata
Show full item recordAbstract
Fe-doped HTaWO6 (H1-3xFexTaWO6, x = 0.23) nanotubes as highly active solid acid catalysts were prepared via an exfoliation-scrolling-exchange process. The specific surface area and pore volume of undoped nanotubes (20.8 m2 g-1, 0.057 cm3 g-1) were remarkably enhanced through Fe3+ ion-exchange (>100 m2 g-1, 0.547 cm3 g-1). Doping Fe ions into the nanotubes endowed them with improved thermal stability due to the stronger interaction between the intercalated Fe3+ ions and the host layers. This interaction also facilitated the preservation of effective Brønsted acid sites and the generation of new acid sites. The integration of these functional roles resulted in Fe-doped nanotubes with high acidic catalytic activities in the Friedel-Crafts alkylation of anisole and the esterification of acetic acid. Facile accessibility to active sites, generation of effective Brønsted acid sites, high stability of the tubular structure and strong acid sites were found to synergistically contribute to the excellent acidic catalytic efficiency. Additionally, the activity of cycled nanocatalysts can be easily recovered through annealing treatment.Citation
Liu H, Zhang H, Fei L, Ma H, Zhao G, et al. (2017) Superior acidic catalytic activity and stability of Fe-doped HTaWO6 nanotubes. Nanoscale 9: 11126–11136. Available: http://dx.doi.org/10.1039/c7nr03260a.Sponsors
This work was financially supported by the State's Key Project of Research and Development Plan (no. 2016YFB0100303), the International Cooperation and Exchange of the National Natural Science Foundation of China (no. 51561145020), the National Natural Science Foundation of China (no. 21271175), the Instrument and Equipment Research and Development Project of CAS (no. YZ201221), the CAS Province Cooperation Program (no. 2014JZ0012), and the CAS Henan Province Cooperation Program (no. 2016103).Publisher
Royal Society of Chemistry (RSC)Journal
NanoscalePubMed ID
28745362ae974a485f413a2113503eed53cd6c53
10.1039/c7nr03260a