Insight into Platinum Poisoning Effect on Cu-SSZ-13 in Selective Catalytic Reduction of NOx with NH3
Abstract
:1. Introduction
2. Results and Discussion
2.1. Influence of Pt Poisoning on the Catalytic Performance of Cu-SSZ-13
2.2. Transient Reactions
2.3. Pt Poisoning Effect on the Texture and Structure
2.4. Pt Poisoning Effect on the Catalytic Active Sites
2.4.1. H2-TPR
2.4.2. X-ray Photoelectron Spectroscopy
3. Experimental
3.1. Catalyst Preparation
3.2. Catalytic Performance Test
3.3. Transient Reaction
4. Conclusions
Supplementary Materials
Author Contributions
Funding
Conflicts of Interest
References
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Sample T (°C) | Reaction | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
NH3 Oxidation | SCR Reaction | NO Oxidation | ||||||||||
NO | NH3 | N2O | NO2 | NO | NH3 | N2O | NO2 | NO | N2O | NO2 | ||
(ppm) | (ppm) | (ppm) | ||||||||||
Cu-SSZ-13 | 330 | 0 | 59 | 4 | 0 | 0 | 0 | 4 | 0 | 485 | 1 | 5 |
460 | 0 | 0 | 1 | 0 | 0 | 0 | 5 | 0 | 479 | 1 | 13 | |
Pt1Cu | 330 | 0 | 0 | 7 | 0 | 85 | 0 | 18 | 11 | 465 | 1 | 12 |
460 | 48 | 0 | 4 | 3 | 306 | 0 | 8 | 44 | 437 | 1 | 56 | |
Pt2Cu | 330 | 0 | 0 | 12 | 0 | 152 | 0 | 39 | 14 | 435 | 2 | 23 |
460 | 98 | 0 | 4 | 23 | 356 | 0 | 8 | 92 | 397 | 1 | 81 | |
Pt3Cu | 330 | 17 | 0 | 24 | 10 | 232 | 0 | 59 | 29 | 424 | 1 | 35 |
460 | 160 | 0 | 5 | 35 | 488 | 0 | 12 | 118 | 404 | 1 | 90 |
Sample | Cu Content a (wt. %) | Pt Content a wt. % | Surface Area b (m2/g) | Pore Volume b (cm3/g) |
---|---|---|---|---|
Cu-SSZ-13 | 4.11 | NDe | 498 | 0.21 |
Pt1Cu | 4.13 | 0.009 | 412 | 0.2 |
Pt2Cu | 4.08 | 0.051 | 390 | 0.19 |
Pt3Cu | 4.14 | 0.1 | 382 | 0.19 |
Cu-H | 4.06 | ND | 406 | 0.17 |
Pt1Cu-H | 4.10 | 0.01 | 355 | 0.17 |
Pt2Cu-H | 4.10 | 0.048 | 342 | 0.16 |
Pt3Cu-H | 4.09 | 0.1 | 335 | 0.15 |
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Zhao, H.; Han, L.; Wang, Y.; Zheng, J. Insight into Platinum Poisoning Effect on Cu-SSZ-13 in Selective Catalytic Reduction of NOx with NH3. Catalysts 2021, 11, 796. https://doi.org/10.3390/catal11070796
Zhao H, Han L, Wang Y, Zheng J. Insight into Platinum Poisoning Effect on Cu-SSZ-13 in Selective Catalytic Reduction of NOx with NH3. Catalysts. 2021; 11(7):796. https://doi.org/10.3390/catal11070796
Chicago/Turabian StyleZhao, Huawang, Lei Han, Yujie Wang, and Jiandong Zheng. 2021. "Insight into Platinum Poisoning Effect on Cu-SSZ-13 in Selective Catalytic Reduction of NOx with NH3" Catalysts 11, no. 7: 796. https://doi.org/10.3390/catal11070796