One-Pot Fabrication of Hollow and Porous Pd–Cu Alloy Nanospheres and Their Remarkably Improved Catalytic Performance for Hexavalent Chromium Reduction

2016 ◽  
Vol 8 (45) ◽  
pp. 30948-30955 ◽  
Author(s):  
Shu-He Han ◽  
Juan Bai ◽  
Hui-Min Liu ◽  
Jing-Hui Zeng ◽  
Jia-Xing Jiang ◽  
...  
Keyword(s):  
Hexavalent Chromium ◽  
Catalytic Performance ◽  
Chromium Reduction ◽  
One Pot ◽  
Cu Alloy

scholarly journals Novel Preparation of Cu and Fe Zirconia Supported Catalysts for Selective Catalytic Reduction of NO with NH3

Catalysts ◽  
2021 ◽  
Vol 11 (1) ◽  
pp. 55
Author(s):  
Katarzyna Świrk ◽  
Ye Wang ◽  
Changwei Hu ◽  
Li Li ◽  
Patrick Da Costa ◽  
...  
Keyword(s):  
Selective Catalytic Reduction ◽  
Catalytic Reduction ◽  
Supported Catalysts ◽  
Catalytic Performance ◽  
Experimental Conditions ◽  
One Pot ◽  
Nh3 Scr ◽  
Scr Of No ◽  
Temperature Programmed ◽  
Stationary Sources

Copper and iron promoted ZrO2 catalysts were prepared by one-pot synthesis using urea. The studied catalysts were characterized by XRD, N2 physisorption, XPS, temperature-programmed desorption of NH3 (NH3-TPD), and tested by the selective catalytic reduction by ammonia (NH3-SCR) of NO in the absence and presence of water vapor, under the experimental conditions representative of exhaust gases from stationary sources. The influence of SO2 on catalytic performance was also investigated. Among the studied catalysts, the Fe-Zr sample showed the most promising results in NH3-SCR, being active and highly selective to N2. The addition of SO2 markedly improved NO and NH3 conversions during NH3-SCR in the presence of H2O. The improvement in acidic surface properties is believed to be the cause.

Hexavalent chromium reduction by Providencia sp.

2006 ◽  
Vol 41 (6) ◽  
pp. 1332-1337 ◽  
Author(s):  
Urvashi Thacker ◽  
Rasesh Parikh ◽  
Yogesh Shouche ◽  
Datta Madamwar
Keyword(s):  
Hexavalent Chromium ◽  
Chromium Reduction
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