Journal
MOLECULAR CATALYSIS
Volume 468, Issue -, Pages 117-124Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.mcat.2019.02.021
Keywords
Diphenyl carbonate; Dimethyl carbonate; Tetragonal zirconia; Monoclinic zirconia
Categories
Funding
- National High Technology Research and Development Program of China (863 program) [2013AA031703]
- National Natural Science Foundation of China [21808048]
- Key Project of Science and Technology Program of Henan Province [182102210050]
- China Postdoctoral Science Foundation [2018M632782]
- Science Research Start-up Fund of Henan Institute of Science and Technology [2015031]
- Key Scientific Research Project of Colleges and Universities in Henan Province [17A150026]
- Postdoctoral Start-up Fund of Henan Institute of Science and Technology
- Postdoctoral Science Foundation of Henan Province
- Natural College Student Innovation and Entrepreneurship Training [S201810467007]
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Zirconia supported Pb-based catalysts with purely tetragonal/monoclinic crystals were prepared and analyzed well by XRD, TEM-EDS, XPS, H-2-TPR, BET, Py-IR and NH3-TPD techniques. The results indicate that zirconia polymorph has great effect on their structure and catalytic property for the synthesis of diphenyl carbonate (DPC) through methyl phenyl carbonate (MPC) disproportionation due to the differences of surface chemical properties, and tetragonal zirconia supported lead catalyst (TZ-Pb) shows bigger dispersion degree of PbO, higher surface area and Lewis acid amounts and thereby exhibits higher catalytic activity and selectivity compared to monoclinic zirconia supported catalyst (MZ-Pb). Furthermore, TZ-Pb shows better reusability due to strong metal-support interaction and may be readily recycled for at least four times without remarkable reactivity loss. This work provides a prospective reference for the facile and efficient synthesis of zirconia poly morph materials in various catalysis applications.
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