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学科主题: 物理化学
题名: Porous MoO3-x nanobelt: synthesis, characterization and catalytic application
作者: Chen JL(陈俊利) ;  Li Y(李勇) ;  Liu JL(刘俊龙) ;  Zhan ES(展恩胜) ;  Li J(李娟) ;  Huang XM(黄秀敏) ;  Shen WJ(申文杰)
会议名称: 3rd international symposium on advanced micro- and mesoporous materials
会议日期: 2009-9-6
出版日期: 2009-09-06
会议地点: 保加利亚
其他题名: 多孔MoO3-x纳米带的合成、表征和催化应用
通讯作者: 申文杰
部门归属: 五室
主办者: 保加利亚科学院
摘要: Porous MoO3-x nanobelts were synthesized by hydrothermal method at 373 K with using P123 as surfactant. The synthesized nanobelts are pure orthorhombic α-MoO3 structure, with the length up to more than 10 mm and width ranging from 20 to 100 nm. The chemical formula is determined to be MoO2.44•0.48H2O and the average valence of Mo is +5.1 by TG and XPS measurements. N2 adsorption-desorption isotherms confirmed the presence of microspore and mesorpores, which is further evidenced by TEM observation. Raman spectra also confirmed the synthesized MoO3-x present the α-MoO3 structure, and these nanobelts might grow along the c axis due to the very higher vibrational intensity of Mo-O-Mo at 820 cm-1. Detailed works on tuning the conditions of hydrothermal synthesis were performed to study the MoO3-x formation mechanism. α -MoO3 via acidification of Na2MoO4•H2O formed at first, and it will be reduced to MoO3-x by P123 under hydrothermal conditions. With the hydrothermal temperature further increased up to 433 K, MoO2 with monolithic structure appeared. More importantly, the MoO3-x nanobelts showed quite promising activity for ethanol oxidation to acetaldehyde, with 78% conversion of ethanol and 79% selectivity of acetaldehyde at 593 K.
语种: 中文
内容类型: 会议论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/113544
Appears in Collections:中国科学院大连化学物理研究所_会议论文

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Recommended Citation:
Chen JL,Li Y,Liu JL,et al. Porous MoO3-x nanobelt: synthesis, characterization and catalytic application[C]. 见:3rd international symposium on advanced micro- and mesoporous materials. 保加利亚. 2009-9-6.
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