Enhanced Catalytic Activity of Cu/ZnO/Al2O3 Catalyst by Mg Addition for Water Gas Shift Reaction 


Vol. 23,  No. 4, pp. 429-434, Dec.  2017
10.7464/ksct.2017.23.4.429


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  Abstract

To investigate the effect of magnesium oxide addition, Cu/ZnO/MgO/Al2O3 (CZMA) catalysts were prepared using co-precipitation method with fixed molar ratio of Cu/Zn/Mg/Al as 45/45/5/5 mol% for low-temperature water gas shift reaction. Synthesized catalysts were characterized by using BET, N2O chemisorption, XRD, H2-TPR and NH3-TPD analysis. The catalytic activity tests were carried out at a GHSV of 28,000 h-1 and a temperature range of 200 ~ 320 ℃. At the same condition, magnesium oxide added catalyst (CZMA 400) showed that the lowest reduction temperature and stable presence of Cu+, that is active species and abundant weak acid site. Also magnesium oxide added catalysts (CZMA) showed higher catalytic activity at temperature range above 240 ℃ than the catalyst without magnesium oxide (CZA). Consequently, CZMA 400 catalyst is considered to be excellent catalyst showing CO conversion of 77.59% without deactivation for about 75 hours at 240 ℃, GHSV 28,000 h-1.

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  Cite this article

[IEEE Style]

P. JH, B. JH, H. RH, Y. KB, "Enhanced Catalytic Activity of Cu/ZnO/Al2O3 Catalyst by Mg Addition for Water Gas Shift Reaction," Clean Technology, vol. 23, no. 4, pp. 429-434, 2017. DOI: 10.7464/ksct.2017.23.4.429.

[ACM Style]

Park JH, Baek JH, Hwang RH, and Yi KB. 2017. Enhanced Catalytic Activity of Cu/ZnO/Al2O3 Catalyst by Mg Addition for Water Gas Shift Reaction. Clean Technology, 23, 4, (2017), 429-434. DOI: 10.7464/ksct.2017.23.4.429.

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pISSN : 1598 - 9712
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