期刊
CATALYSTS
卷 5, 期 4, 页码 2134-2146出版社
MDPI
DOI: 10.3390/catal5042134
关键词
hierarchically zeolites composites; yolk/core-shell structured TS-1 zeolite; hydroxylation of phenol
资金
- National Natural Science Foundation of China [21390394]
- National Basic Research Program of China [2012CB821700, 2011CB808703]
- NSFC [21261130584, 91022030]
- 111 project [B07016]
- Award Project of KAUST [CRG-1-2012-LAI-009]
- Ministry of Education, Science and Technology Development Center Project [20120061130012]
In the current work, we developed a facile synthesis of yolk/core-shell structured TS-1@mesosilica composites and studied their catalytic performances in the hydroxylation of phenol with H2O2 as the oxidant. The core-shell TS-1@mesosilica composites were prepared via a uniform coating process, while the yolk-shell TS-1@mesosilica composite was prepared using a resorcinol-formaldehyde resin (RF) middle-layer as the sacrificial template. The obtained materials were characterized by X-ray diffraction (XRD), N-2 sorption, Fourier transform infrared spectoscopy (FT-IR) UV-Visible spectroscopy, scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The characterization results showed that these samples possessed highly uniform yolk/core-shell structures, high surface area (560-700 m(2) g(-1)) and hierarchical pore structures from oriented mesochannels to zeolite micropores. Importantly, owing to their unique structural properties, these composites exhibited enhanced activity, and also selectivity in the phenol hydroxylation reaction.
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