Ion Exchange of One-Pot Synthesized Cu-SAPO-44 with NH4NO3 to Promote Cu Dispersion and Activity for Selective Catalytic Reduction of NOx with NH3
Abstract
:1. Introduction
2. Results and Discussion
2.1. XRD
2.2. ICP
2.3. Catalytic Activity
2.4. N2 Adsorption/Desorption
2.5. Electron Micrograph
2.6. H2-TPR
2.7. XAFS
3. Materials and Methods
3.1. Catalyst Preparation
3.2. Catalyst Characterizations
3.3. Catalyst Activity Measurements
4. Conclusions
Author Contributions
Funding
Conflicts of Interest
References
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Sample | Element Content from ICP (wt.%) | ||||
---|---|---|---|---|---|
Cu | Si | Al | Si/Al | P | |
Cu4.3-SAPO-44 | 4.3 | 5.7 | 17.2 | 0.32 | 16.5 |
Cu5.6-SAPO-44 | 5.6 | 6.4 | 16.7 | 0.37 | 13.6 |
Cu7.6-SAPO-44 | 7.6 | 5.1 | 17.6 | 0.28 | 15.1 |
Cu1.0-SAPO-44-IE | 1.0 | 6.1 | 18.8 | 0.31 | 18.2 |
Cu1.6-SAPO-44-IE | 1.6 | 7.1 | 18.7 | 0.37 | 14.0 |
Cu2.2-SAPO-44-IE | 2.2 | 4.8 | 20.2 | 0.23 | 18.4 |
Sample | BET Surface Areas (m2/g) | Pore Volume (cm3/g) | Cu2+/CuO Data from LCF of XANES Spectra (wt.%/wt.%) |
---|---|---|---|
Cu5.6-SAPO-44 | 338.8 | 0.15 | 22.4/77.6 |
Cu1.6-SAPO-44-IE | 363.7 | 0.17 | 69.7/30.3 |
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Zhang, N.; Xin, Y.; Li, Q.; Ma, X.; Qi, Y.; Zheng, L.; Zhang, Z. Ion Exchange of One-Pot Synthesized Cu-SAPO-44 with NH4NO3 to Promote Cu Dispersion and Activity for Selective Catalytic Reduction of NOx with NH3. Catalysts 2019, 9, 882. https://doi.org/10.3390/catal9110882
Zhang N, Xin Y, Li Q, Ma X, Qi Y, Zheng L, Zhang Z. Ion Exchange of One-Pot Synthesized Cu-SAPO-44 with NH4NO3 to Promote Cu Dispersion and Activity for Selective Catalytic Reduction of NOx with NH3. Catalysts. 2019; 9(11):882. https://doi.org/10.3390/catal9110882
Chicago/Turabian StyleZhang, Nana, Ying Xin, Qian Li, Xicheng Ma, Yongxin Qi, Lirong Zheng, and Zhaoliang Zhang. 2019. "Ion Exchange of One-Pot Synthesized Cu-SAPO-44 with NH4NO3 to Promote Cu Dispersion and Activity for Selective Catalytic Reduction of NOx with NH3" Catalysts 9, no. 11: 882. https://doi.org/10.3390/catal9110882