Room-temperature oxidation of reduced Cu/ZnO surfaces by lattice oxygen diffusion

被引:12
作者
Ahlers, Jesse A. [1 ]
Grasser, Jordan A. [1 ]
Loveless, Brett T. [1 ]
Muggli, Darrin S. [1 ]
机构
[1] Univ N Dakota, Dept Chem Engn, Grand Forks, ND 58202 USA
基金
美国国家科学基金会;
关键词
room temperature; oxidation;
D O I
10.1007/s10562-007-9065-1
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
At room temperature in the absence of gas-phase oxygen, reduced Cu on Cu/ZnO extracts oxygen from the ZnO lattice to reoxidize the surface. After 120 min at room temperature, diffusion of lattice oxygen reoxidizes reduced Cu/ZnO to 3% of its completely oxidized state. When gas-phase oxygen is present, it promotes the partial reoxidation of the reduced Cu/ZnO surface at room-temperature.
引用
收藏
页码:185 / 191
页数:7
相关论文
共 29 条
[11]   Redox behavior of copper oxide/zinc oxide catalysts in the steam reforming of methanol studied by in situ X-ray diffraction and absorption spectroscopy [J].
Günter, MM ;
Ressler, T ;
Jentoft, RE ;
Bems, B .
JOURNAL OF CATALYSIS, 2001, 203 (01) :133-149
[12]   Micro-structured string-reactor for autothermal production of hydrogen [J].
Horny, C ;
Kiwi-Minsker, L ;
Renken, A .
CHEMICAL ENGINEERING JOURNAL, 2004, 101 (1-3) :3-9
[13]   Hydrogen production by steam reforming of methanol [J].
Iwasa, N ;
Nomura, W ;
Mayanagi, T ;
Fujita, S ;
Arai, M ;
Takezawa, N .
JOURNAL OF CHEMICAL ENGINEERING OF JAPAN, 2004, 37 (02) :286-293
[14]   Structural change of Cu/ZnO by reduction of ZnO in Cu/ZnO with methanol [J].
Jung, KD ;
Joo, OS ;
Han, SH .
CATALYSIS LETTERS, 2000, 68 (1-2) :49-54
[15]   METHANOL SYNTHESIS [J].
KLIER, K .
ADVANCES IN CATALYSIS, 1982, 31 :243-313
[16]  
Li SL, 2004, CHINESE J CATAL, V25, P979
[17]   Hydrogen production via catalytic gasification of ethanol.: A mechanism proposal over copper-nickel catalysts [J].
Mariño, F ;
Boveri, M ;
Baronetti, G ;
Laborde, M .
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, 2004, 29 (01) :67-71
[18]   The role of ZnO in Cu/ZnO methanol synthesis catalysts [J].
Nakamura, J ;
Uchijima, T ;
Kanai, Y ;
Fujitani, T .
CATALYSIS TODAY, 1996, 28 (03) :223-230
[19]  
NAKAMURA J, 1996, J CATAL, V160, P5
[20]   Production of hydrogen by partial oxidation of methanol over a Cu/ZnO/Al2O3 catalyst:: Influence of the initial state of the catalyst on the start-up behaviour of the reformer [J].
Navarro, RM ;
Peña, MA ;
Fierro, JLG .
JOURNAL OF CATALYSIS, 2002, 212 (01) :112-118