Thermal Activation of CuBTC MOF for CO Oxidation: The Effect of Activation Atmosphere
College of Physical Science and Technology, Dalian University, Dalian 116622, China
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Academic Editors: Shaobin Wang and Xiaoguang Duan
Catalysts 2017, 7(4), 106; https://doi.org/10.3390/catal7040106
Received: 24 February 2017 / Revised: 26 March 2017 / Accepted: 4 April 2017 / Published: 7 April 2017
(This article belongs to the Special Issue Heterogeneous Catalysis for Environmental Remediation)
High performance catalysts for carbon monoxide (CO) oxidation were obtained through thermal activation of a CuBTC (BTC: 1,3,5-benzenetricarboxylic acid) metal–organic framework (MOF) in various atmospheres. X-ray diffraction (XRD), X-ray photonelectron spectroscopy (XPS), N2 adsorption–desorption measurement, and field emission scanning electron microscopy (FESEM) were adopted to characterize the catalysts. The results show that thermal activation by reductive H2 may greatly destroy the structure of CuBTC. Inert Ar gas has a weak influence on the structure of CuBTC. Therefore, these two catalysts exhibit low CO oxidation activity. Activating with O2 is effective for CuBTC catalysts, since active CuO species may be obtained due to the slight collapse of CuBTC structure. The highest activity is obtained when activating with CO reaction gas, since many pores and more effective Cu2O is formed during the thermal activation process. These results show that the structure and chemical state of coordinated metallic ions in MOFs are adjustable by controlling the activation conditions. This work provides an effective method for designing and fabricating high performance catalysts for CO oxidation based on MOFs.
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Keywords:
CuBTC; thermal activation; CO oxidation; metal-organic frameworks; copper (I) oxide; copper (II) oxide
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MDPI and ACS Style
Zhang, X.; Zhan, Z.; Li, Z.; Di, L. Thermal Activation of CuBTC MOF for CO Oxidation: The Effect of Activation Atmosphere. Catalysts 2017, 7, 106. https://doi.org/10.3390/catal7040106
AMA Style
Zhang X, Zhan Z, Li Z, Di L. Thermal Activation of CuBTC MOF for CO Oxidation: The Effect of Activation Atmosphere. Catalysts. 2017; 7(4):106. https://doi.org/10.3390/catal7040106
Chicago/Turabian StyleZhang, Xiuling; Zhan, Zhibin; Li, Zhuang; Di, Lanbo. 2017. "Thermal Activation of CuBTC MOF for CO Oxidation: The Effect of Activation Atmosphere" Catalysts 7, no. 4: 106. https://doi.org/10.3390/catal7040106
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