期刊
JOURNAL OF HAZARDOUS MATERIALS
卷 342, 期 -, 页码 290-296出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jhazmat.2017.08.036
关键词
Catalytic oxidation; Vinyl chloride; Chlorinated volatile organic compounds; Cobalt phosphate-mesostructured cellular foams; Ruthenium oxides
资金
- National Key Research and Development Program of China [2016YFC0204300]
- National Natural Science Foundation of China [21577035]
- Commission of Science and Technology of Shanghai Municipality [15DZ1205305]
- Fundamental Research Funds for Central Universities [222201717003]
A novel heterostructured material, cobalt phosphate-SiO2 mesostructured cellular foams (CoPO-MCF), was successfully synthesized by in situ growth. The material was characterized by X-ray diffraction (XRD), nitrogen sorption, temperature -programmed reduction (H-2-TPR and CO-TPR), temperature-programmed desorption of NH3 (NH3-TPD), and X-ray photoelectron spectroscopy (XPS). A ruthenium precursor was readily introduced and highly dispersed on the CoPO nanophases of the CoPO-MCF through an impregnation method. The resulting Ru/CoPO-MCF catalyst exhibited high catalytic activity for the oxidation of vinyl chloride (VC). The results of three consecutive runs and long-term tests showed high stability of the Ru/CoPO-MCF for the catalytic oxidation of VC. The unique heterostructures of the CoPO-MCF not only improve the reducibility and acidity of the MCF but also strengthen the interaction between ruthenium oxide nanoparticles and the CoPO-MCF support, which contributes to the enhanced catalytic performance. (C) 2017 Elsevier B.V. All rights reserved.
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