Chem. J. Chinese Universities ›› 2021, Vol. 42 ›› Issue (9): 2832.doi: 10.7503/cjcu20210360
• Physical Chemistry • Previous Articles Next Articles
MENG Fanwei, GAO Qi, YE Qing(), LI Chenxi
Received:
2021-05-25
Online:
2021-09-10
Published:
2021-09-08
Contact:
YE Qing
E-mail:yeqing@bjut.edu.cn
Supported by:
CLC Number:
TrendMD:
MENG Fanwei, GAO Qi, YE Qing, LI Chenxi. Potassium Poisoning Mechanism of Cu-SAPO-18 Catalyst for Selective Catalytic Reduction of NOx by Ammonia[J]. Chem. J. Chinese Universities, 2021, 42(9): 2832.
Sample | SBET/(m2?g?1) | Vmic/(cm3?g?1) | Sample | SBET/(m2?g?1) | Vmic/(cm3?g?1) |
---|---|---|---|---|---|
Cu?SAPO?18 | 597.33 | 0.24 | 0.4K?Cu?SAPO?18?750 | 271.05 | 0.12 |
0.4K?Cu?SAPO?18 | 556.73 | 0.22 | 0.4K?Cu?SAPO?18?850 | 254.49 | 0.11 |
0.4K?Cu?SAPO?18?650 | 543.80 | 0.21 | Cu?SAPO?18?50 | 267.40 | 0.11 |
Sample | SBET/(m2?g?1) | Vmic/(cm3?g?1) | Sample | SBET/(m2?g?1) | Vmic/(cm3?g?1) |
---|---|---|---|---|---|
Cu?SAPO?18 | 597.33 | 0.24 | 0.4K?Cu?SAPO?18?750 | 271.05 | 0.12 |
0.4K?Cu?SAPO?18 | 556.73 | 0.22 | 0.4K?Cu?SAPO?18?850 | 254.49 | 0.11 |
0.4K?Cu?SAPO?18?650 | 543.80 | 0.21 | Cu?SAPO?18?50 | 267.40 | 0.11 |
Sample | Content of Cu species/(μmol?g?1) | ||||
---|---|---|---|---|---|
Cu2+(8MR) | CuO | Cu2+(D6R) | Cu+ | Cutotal | |
Cu?SAPO?18 | 32.23 | 59.98 | 34.38 | 1.32 | 127.91 |
0.4K?Cu?SAPO?18 | 18.47 | 56.76 | 21.05 | 101.96 | 198.23 |
0.4K?Cu?SAPO?18?650 | 14.60 | 49.45 | 18.47 | 122.17 | 204.69 |
0.4K?Cu?SAPO?18?750 | 5.14 | 43.86 | 5.57 | 209.05 | 263.61 |
0.4K?Cu?SAPO?18?850 | 3.85 | 41.49 | 4.28 | 317.86 | 367.47 |
Cu?SAPO?18?850 | 29.18 | 32.19 | 15.69 | 189.17 | 266.23 |
Sample | Content of Cu species/(μmol?g?1) | ||||
---|---|---|---|---|---|
Cu2+(8MR) | CuO | Cu2+(D6R) | Cu+ | Cutotal | |
Cu?SAPO?18 | 32.23 | 59.98 | 34.38 | 1.32 | 127.91 |
0.4K?Cu?SAPO?18 | 18.47 | 56.76 | 21.05 | 101.96 | 198.23 |
0.4K?Cu?SAPO?18?650 | 14.60 | 49.45 | 18.47 | 122.17 | 204.69 |
0.4K?Cu?SAPO?18?750 | 5.14 | 43.86 | 5.57 | 209.05 | 263.61 |
0.4K?Cu?SAPO?18?850 | 3.85 | 41.49 | 4.28 | 317.86 | 367.47 |
Cu?SAPO?18?850 | 29.18 | 32.19 | 15.69 | 189.17 | 266.23 |
Sample | Acidity site/(mmol?g?1) | Amount/(mmol?g?1) | ||
---|---|---|---|---|
Weak | Moderate | Strong | ||
Cu?SAPO?18 | 0.201 | 0.103 | 0.302 | 0.636 |
0.4K?Cu?SAPO?18 | 0.102 | 0.086 | 0.071 | 0.259 |
0.4K?Cu?SAPO?18?650 | 0.084 | 0.059 | 0.051 | 0.174 |
0.4K?Cu?SAPO?18?750 | 0.013 | 0.018 | 0.011 | 0.042 |
0.4K?Cu?SAPO?18?850 | 0.011 | 0.012 | 0.010 | 0.033 |
Cu?SAPO?18?850 | 0.120 | 0.092 | 0.091 | 0.313 |
Sample | Acidity site/(mmol?g?1) | Amount/(mmol?g?1) | ||
---|---|---|---|---|
Weak | Moderate | Strong | ||
Cu?SAPO?18 | 0.201 | 0.103 | 0.302 | 0.636 |
0.4K?Cu?SAPO?18 | 0.102 | 0.086 | 0.071 | 0.259 |
0.4K?Cu?SAPO?18?650 | 0.084 | 0.059 | 0.051 | 0.174 |
0.4K?Cu?SAPO?18?750 | 0.013 | 0.018 | 0.011 | 0.042 |
0.4K?Cu?SAPO?18?850 | 0.011 | 0.012 | 0.010 | 0.033 |
Cu?SAPO?18?850 | 0.120 | 0.092 | 0.091 | 0.313 |
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