Effect of surface functionalization of cerium-doped MCM-48 on its catalytic performance for liquid-phase free-solvent oxidation of cyclohexane with molecular oxygen
作者： Yu Fu , Wangcheng Zhan , Yanglong Guo , Yanqin Wang , Xiaohui Liu
DOI: 10.1016/J.MICROMESO.2015.05.004
关键词:
摘要: Abstract Ce-doped MCM-48 (Ce-MCM-48) mesoporous molecular sieve was prepared hydrothermally and its surface modified with organic groups or fluorine, their physicochemical properties were characterized by XRD, low-temperature N 2 adsorption, TEM, UV–visible FT-IR spectroscopies, XPS contact angle measurement. The results indicated that Ce species highly dispersed on the materials as 3+ 4+ . After post-functionalization of Ce-MCM-48, fluorine have been immobilized but chemical status hardly changed, improved hydrophobicity Ce-MCM-48 sample. catalytic activity testing for oxidation cyclohexane oxygen showed that, after exhibited higher conversion selectivity to cyclohexanol cyclohexanone, 8.9% 91.2% cyclohexanone could be achieved over F-modified catalyst, which attributed proper modification including polarity. catalyst also excellent reusability, performance has no obvious deterioration being repeatedly used five times.
elsevier.com
sci-hub.se 参考文章(32)
Chunman Ho, Jimmy C. Yu, Tszyan Kwong, Angelo C. Mak, Sukyin Lai, Morphology-Controllable Synthesis of Mesoporous CeO2 Nano- and Microstructures Chemistry of Materials. ,vol. 17, pp. 4514- 4522 ,(2005) , 10.1021/CM0507967
Anand Ramanathan, Mohamed S. Hamdy, Rudy Parton, Thomas Maschmeyer, Jacobus C. Jansen, Ulf Hanefeld, Co-TUD-1 catalysed aerobic oxidation of cyclohexane Applied Catalysis A-general. ,vol. 355, pp. 78- 82 ,(2009) , 10.1016/J.APCATA.2008.11.026
Sameer Deshpande, Swanand Patil, Satyanarayana VNT Kuchibhatla, Sudipta Seal, Size dependency variation in lattice parameter and valency states in nanocrystalline cerium oxide Applied Physics Letters. ,vol. 87, pp. 133113- ,(2005) , 10.1063/1.2061873
Mingyang Xing, Dianyu Qi, Jinlong Zhang, Feng Chen, Baozhu Tian, Segomotso Bagwas, Masakazu Anpo, Super-hydrophobic fluorination mesoporous MCF/TiO2 composite as a high-performance photocatalyst Journal of Catalysis. ,vol. 294, pp. 37- 46 ,(2012) , 10.1016/J.JCAT.2012.07.004
Kazuki Nakatsuka, Kohsuke Mori, Shusuke Okada, Shohei Ikurumi, Takashi Kamegawa, Hiromi Yamashita, Hydrophobic Modification of Pd/SiO2@Single‐Site Mesoporous Silicas by Triethoxyfluorosilane: Enhanced Catalytic Activity and Selectivity for One‐Pot Oxidation Chemistry: A European Journal. ,vol. 20, pp. 8348- 8354 ,(2014) , 10.1002/CHEM.201402586
Ye Wang, Qinghong Zhang, Tetsuya Shishido, Katsuomi Takehira, Characterizations of iron-containing MCM-41 and its catalytic properties in epoxidation of styrene with hydrogen peroxide Journal of Catalysis. ,vol. 209, pp. 186- 196 ,(2002) , 10.1006/JCAT.2002.3607
Robert H. Crabtree, Introduction to Selective Functionalization of C−H Bonds Chemical Reviews. ,vol. 110, pp. 575- 575 ,(2010) , 10.1021/CR900388D
Wangcheng ZHAN, Guanzhong LU, Yanglong GUO, Yun GUO, Yanqin WANG, Yunsong WANG, Zhigang ZHANG, Xiaohui LIU, Synthesis of cerium-doped MCM-48 molecular sieves and its catalytic performance for selective oxidation of cyclohexane Journal of Rare Earths. ,vol. 26, pp. 515- 522 ,(2008) , 10.1016/S1002-0721(08)60129-5
Mingjun Jia, Andreas Seifert, Werner R. Thiel, Mesoporous MCM-41 Materials Modified with Oxodiperoxo Molybdenum Complexes: Efficient Catalysts for the Epoxidation of Cyclooctene Chemistry of Materials. ,vol. 15, pp. 2174- 2180 ,(2003) , 10.1021/CM021380L
Pingping Wu, Peng Bai, Zhibin Lei, Kian Ping Loh, X.S. Zhao, Gold nanoparticles supported on functionalized mesoporous silica for selective oxidation of cyclohexane Microporous and Mesoporous Materials. ,vol. 141, pp. 222- 230 ,(2011) , 10.1016/J.MICROMESO.2010.11.011