Synthesis, characterization and photo-epoxidation performance of Au-loaded photocatalysts
作者： VAN-HUY NGUYEN , HSIANG-YU CHAN , JEFFREY C S WU
DOI: 10.1007/S12039-013-0449-Z
关键词: Spectroscopy 、 X-ray photoelectron spectroscopy 、 Visible spectrum 、 Crystallization 、 Transmission electron microscopy 、 Raman spectroscopy 、 Scanning electron microscope 、 Materials science 、 Photochemistry 、 Photocatalysis
摘要: Titanium silicalite-1 (TS-1) was synthesized by hydrothermal crystallization. Au-loaded TS-1 (Au/TS-1) prepared the photo-deposition method. The photocatalysts have been fully characterized Raman, Brunauer–Emmett–Teller (BET), transmission electron microscopy, scanning X-ray diffraction, photoelectron spectroscopy, and ultraviolet visible light spectroscopy to reveal their structure, surface morphology chemical composition. Photocatalytic activity of these ascertained gas phase photo-epoxidation propylene-to-propylene oxide in presence molecular oxygen only under irradiation. No sacrificial reductant such as hydrogen used during photoreaction. Au/TS-1 photocatalyst remained highly stable reaction conditions. It is found that increased Ti3+ sites due incorporation Au will not enhance selectivity form epoxide but also its stability C3H6 conversion.
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sci-hub.se 参考文章(30)
S. Ted Oyama, Mechanisms in homogeneous and heterogeneous epoxidation catalysis Elsevier. ,(2008)
Ajay M. Joshi, Bradley Taylor, Lasitha Cumaranatunge, Kendall T. Thomson, W. Nicholas Delgass, Chapter 11 – Propylene Epoxidation by O2 + H2 over Au Nanoparticles on Ti-Nanoporous Supports Mechanisms in Homogeneous and Heterogeneous Epoxidation Catalysis. pp. 315- 338 ,(2008) , 10.1016/B978-0-444-53188-9.00011-0
S. Bordiga, A. Damin, F. Bonino, G. Ricchiardi, A. Zecchina, R. Tagliapietra, C. Lamberti, Resonance Raman effects in TS-1: the structure of Ti(IV) species and reactivity towards H2O, NH3 and H2O2: an in situ study Physical Chemistry Chemical Physics. ,vol. 5, pp. 4390- 4393 ,(2003) , 10.1039/B306041C
Fumiaki Amano, Tsunehiro Tanaka, Propylene oxide synthesis and selective oxidation over supported metal oxide photocatalysts with molecular oxygen Chemistry Letters. ,vol. 35, pp. 468- 473 ,(2006) , 10.1246/CL.2006.468
S IVANOVA, V PITCHON, C PETIT, H HERSCHBACH, A DORSSELAER, E LEIZE, Preparation of alumina supported gold catalysts: Gold complexes genesis, identification and speciation by mass spectrometry Applied Catalysis A-general. ,vol. 298, pp. 203- 210 ,(2006) , 10.1016/J.APCATA.2005.10.018
Georgi N. Vayssilov, Structural and Physicochemical Features of Titanium Silicalites Catalysis Reviews-science and Engineering. ,vol. 39, pp. 209- 251 ,(1997) , 10.1080/01614949709353777
Fumiaki Amano, Tsunehiro Tanaka, Modification of photocatalytic center for photo-epoxidation of propylene by rubidium ion addition to V2O5/SiO2 Catalysis Communications. ,vol. 6, pp. 269- 273 ,(2005) , 10.1016/J.CATCOM.2005.01.007
T. Alexander Nijhuis, Michiel Makkee, Jacob A. Moulijn, Bert M. Weckhuysen, The Production of Propene Oxide: Catalytic Processes and Recent Developments Industrial & Engineering Chemistry Research. ,vol. 45, pp. 3447- 3459 ,(2006) , 10.1021/IE0513090
Zhanghuai Suo, Mingshan Jin, Jiqing Lu, Zhaobin Wei, Can Li, Direct gas-phase epoxidation of propylene to propylene oxide using air as oxidant on supported gold catalyst Journal of Natural Gas Chemistry. ,vol. 17, pp. 184- 190 ,(2008) , 10.1016/S1003-9953(08)60049-3
Siriphong Rojluechai, Sumaeth Chavadej, Johannes W. Schwank, Vissanu Meeyoo, Catalytic activity of ethylene oxidation over Au, Ag and Au–Ag catalysts: Support effect Catalysis Communications. ,vol. 8, pp. 57- 64 ,(2007) , 10.1016/J.CATCOM.2006.05.029