Journal of Inorganic Materials ›› 2022, Vol. 37 ›› Issue (10): 1065-1072.DOI: 10.15541/jim20220020
• RESEARCH ARTICLE • Previous Articles Next Articles
CHEN Yaling1,2(), SHU Song1,2, WANG Shaoxin1,2, LI Jianjun1,2(
)
Received:
2022-01-13
Revised:
2022-04-14
Published:
2022-10-20
Online:
2022-04-26
Contact:
LI Jianjun, professor. E-mail: jjli@scu.edu.cnAbout author:
CHEN Yaling (1997-), female, Master candidate. E-mail: chenyaling@stu.scu.edu.cn
Supported by:
CLC Number:
CHEN Yaling, SHU Song, WANG Shaoxin, LI Jianjun. Mn-HAP SCR Catalyst: Preparation and Sulfur Resistance[J]. Journal of Inorganic Materials, 2022, 37(10): 1065-1072.
Fig. 3 (a) SCR activity of CPF, CPM, CPA, and HAP, and sulfur resistance test of CPF and (b) stability test of CPF Colorful figures are available on website
Catalyst | Preparation method | NO conversion/% | Temperature and condition | Ref. |
---|---|---|---|---|
Mn-HAP | Co-preparation | 62.60 | 140 ℃, 200×10-6 SO2, 2 h | This research |
NB-C-P | Hydrothermal | 45.00 | 150 ℃, 250×10-6 SO2, 2 h | [ |
MnO2 | Oxalic acid co-precipitation | 17.65 | 150 ℃, 200×10-6 SO2, 2 h | [ |
MnCrOx | Hydrothermal redox reaction | 37.46 | 150 ℃, 50×10-6 SO2, 2 h | [ |
Table 1 Activity comparison of different catalysts
Catalyst | Preparation method | NO conversion/% | Temperature and condition | Ref. |
---|---|---|---|---|
Mn-HAP | Co-preparation | 62.60 | 140 ℃, 200×10-6 SO2, 2 h | This research |
NB-C-P | Hydrothermal | 45.00 | 150 ℃, 250×10-6 SO2, 2 h | [ |
MnO2 | Oxalic acid co-precipitation | 17.65 | 150 ℃, 200×10-6 SO2, 2 h | [ |
MnCrOx | Hydrothermal redox reaction | 37.46 | 150 ℃, 50×10-6 SO2, 2 h | [ |
Sample | Specific area/ (m2·g-1) | Pore volume/ (cm3·g-1) | Average pore size/nm |
---|---|---|---|
CPF | 153.6 | 0.5500 | 13.49 |
CPM | 117.3 | 0.4600 | 14.11 |
CPA | 133.2 | 0.4300 | 11.57 |
Table 2 Physical parameters of fresh catalysts and toxic catalysts
Sample | Specific area/ (m2·g-1) | Pore volume/ (cm3·g-1) | Average pore size/nm |
---|---|---|---|
CPF | 153.6 | 0.5500 | 13.49 |
CPM | 117.3 | 0.4600 | 14.11 |
CPA | 133.2 | 0.4300 | 11.57 |
Sample | O | Mn | ||||
---|---|---|---|---|---|---|
Olatt/O | Oads/O | Oads/Olatt | Mn2+/Mn | Mn3+/Mn | Mn4+/Mn | |
CPF | 0.9050 | 0.0950 | 0.1050 | 0.06510 | 0.1670 | 0.7300 |
CPM | 0.9210 | 0.0790 | 0.0860 | 0.10000 | 0.5900 | 0.3100 |
CPA | 0.8760 | 0.1230 | 0.1410 | 0.13500 | 0.2240 | 0.6410 |
Table 3 XPS results of Mn and O on the surface of fresh catalysts and toxic catalysts
Sample | O | Mn | ||||
---|---|---|---|---|---|---|
Olatt/O | Oads/O | Oads/Olatt | Mn2+/Mn | Mn3+/Mn | Mn4+/Mn | |
CPF | 0.9050 | 0.0950 | 0.1050 | 0.06510 | 0.1670 | 0.7300 |
CPM | 0.9210 | 0.0790 | 0.0860 | 0.10000 | 0.5900 | 0.3100 |
CPA | 0.8760 | 0.1230 | 0.1410 | 0.13500 | 0.2240 | 0.6410 |
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