Cu/Hβ催化剂NH<sub>3</sub>选择性催化还原NO性能研究

孙锦昌; 任翠涛; 赵明新; 田春雨; 迟姚玲; 赵田田; 王虹

doi:10.1016/S1872-5813(22)60071-9

Cu/Hβ催化剂NH₃选择性催化还原NO性能研究

doi: 10.1016/S1872-5813(22)60071-9

孙锦昌^{1, 2,},
任翠涛^{1, 3},
赵明新¹,
田春雨¹,
迟姚玲^{1, 2, ,},
赵田田¹,
王虹^{1, 2, ,}

1.
北京石油化工学院新材料与化工学院, 北京 102617
2.
燃料清洁化及高效催化减排技术北京市重点实验室, 北京 102617
3.
北京华电光大环境股份有限公司, 北京 102206

基金项目: 国家自然科学基金（U1662103，2167329）资助

详细信息

通讯作者:
E-mail: chiyaoling@bipt.edu.cn

wanghong@bipt.edu.cn

中图分类号: O643
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- 被引次数: 0
出版历程
- 收稿日期: 2022-08-23
- 修回日期: 2022-10-09
- 录用日期: 2022-10-17
- 网络出版日期: 2022-11-16
- 刊出日期: 2023-06-15

Catalytic performance of Cu/Hβ catalysts for selective catalytic reduction of NO with NH₃

SUN Jin-chang^{1, 2
,},
REN Cui-tao^{1, 3},
ZHAO Ming-xin¹,
TIAN Chun-yu¹,
CHI Yao-ling^{1, 2
, ,},
ZHAO Tian-tian¹,
WANG Hong^{1, 2
, ,}

1.
College of New Material and Chemical Engineering, Beijing Institute of Petrochemical Technology, Beijing 102617, China
2.
Beijing Key Laboratory of Fuels Cleaning and Advanced Catalytic Emission Reduction Technology, Beijing 102617, China
3.
Beijing National Power Group CO., LTd. Beijing 102206, China)

Funds: The project was supported by the National Natural Science Foundation (U1662103, 2167329)

摘要

摘要: 采用浸渍法制备了以Hβ分子筛为载体的负载氧化铜催化剂，考察了Cu负载量对催化剂NH₃选择性催化还原NO反应（NH₃-SCR）性能的影响，通过XRD、N₂吸附-脱附、NH₃-TPD、NO-TPD、H₂-TPR、EDS和XPS等表征技术研究了催化剂的物理化学性质和SO₂存在条件下催化剂活性降低的原因。结果表明，反应气体不含SO₂，Cu负载量为3%，即Cu(3)/Hβ催化剂有较高的反应活性，t₉₅为169 ℃；反应气体含SO₂，Cu负载量为2%时，即Cu(2)/Hβ催化剂的反应活性较好，t₉₅为225 ℃。反应前后催化剂的分析结果表明，SO₂存在条件下催化剂活性降低的主要原因是在低温条件下，SO₂与NH₃反应生成的硫铵盐覆盖了催化剂活性中心。
- Hβ分子筛 /
- 铜 /
- 选择性催化还原 /
- 氨 /
- 氮氧化物
Abstract: A series of Cu(x)/Hβ catalysts were prepared by the impregnation method and the effect on the performance of the catalysts for the selective catalytic reduction of NO with NH₃ (NH₃-SCR) was investigated. Characterization techniques such as XRD, N₂adsorption-desorption, NH₃-TPD, NO-TPD, H₂-TPR, EDS and XPS were used to investigate the physical and chemical properties of the catalysts and the reason of the decrease of catalyst activity in the presence of SO₂. It was shown that the catalyst Cu(3)/Hβ, the Cu loading was 3% and Cu(2)/Hβ, the Cu loading was 2%, exhibited the better catalytic activity when the initial reaction material contained no SO₂ and SO₂, and t₉₅was 169 and 225 ℃, respectively. The analysis results of the catalyst before and after the reaction showed that the main reason for the decrease of catalyst activity in the presence of SO₂ was that the ammonium sulfur salt which was formed by the reaction of SO₂ and NH₃ in the low reaction temperature covers the catalyst active center.
- Hβ /
- copper /
- selective catalytic reduction /
- NH₃ /
- NO

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FIG. 2387. FIG. 2387.

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图 1 Cu(x)/Hβ催化剂的XRD谱图

Figure 1 XRD patterns of the Cu(x)/Hβ catalysts

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图 2 Cu(x)/Hβ催化剂的N₂吸附-脱附等温曲线

Figure 2 N₂ adsorption and desorption isotherms of the Cu(x)/Hβ catalysts

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图 3 Cu(x)/Hβ催化剂的NH₃-TPD谱图

Figure 3 NH₃-TPD profiles of the Cu(x)/Hβ catalysts

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图 4 Cu(x)/Hβ催化剂的NO-TPD谱图

Figure 4 NO-TPD profiles of the Cu(x)/Hβ catalysts

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图 5 Cu(x)/Hβ催化剂的H₂-TPR谱图

Figure 5 H₂-TPR profiles of the Cu(x)/Hβ catalysts

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图 6 Cu(x)/Hβ催化剂上NH₃-SCR 脱硝反应温度与NO 转化率关系

Figure 6 Relationship between NO conversion and temperature for the NH₃-SCR reaction over the Cu(x)/Hβ catalysts

(a): no SO₂ in the reaction system; (b): with SO₂in the reaction system

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图 7 Cu(2)/Hβ催化剂反应前后的XRD谱图

Figure 7 XRD patterns of the Cu(2)/Hβ catalysts before and after the reaction at different reaction temperatures

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图 8 Cu(2)/Hβ催化剂反应前后S 2p (a) 和N 1s (b) XPS谱图

Figure 8 S 2p (a) and N 1s (b) XPS spectra of the Cu(2)/Hβ catalysts

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表 1 Cu(x)/Hβ催化剂上N₂脱附峰面积和温度

Table 1 Texture property data of Cu( x )/Hβ catalysts

Sample	S_BET / (m²·g⁻¹)	S_micro / (m²·g⁻¹)	S_ext / (m²·g⁻¹)	v_total/ (cm³·g⁻¹)	v_micro / (cm³·g⁻¹)	v_ext / (cm³·g⁻¹)
Hβ	537	416	121	0.42	0.19	0.23
Cu(1)/Hβ	511	402	109	0.40	0.18	0.22
Cu(2)/Hβ	476	381	95	0.37	0.17	0.20
Cu(3)/Hβ	474	376	98	0.37	0.17	0.20
Cu(4)/Hβ	425	338	87	0.34	0.15	0.19

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表 2 Cu(x)/Hβ催化剂上NH₃脱附峰面积和温度

Table 2 Area and temperature of NH₃ desorption peak over the Cu(x)/Hβ catalysts

Sample	Area of acid sites /(a.u.) (Temperature /℃)			Total
Sample	weak acid	medium strong acid	strong acid	Total
Hβ	3.02（173）	4.26（231）	3.68（369）	10.96
Cu(1)/Hβ	2.05（169）	2.42（214）	2.16（325）	6.63
Cu(2)/Hβ	2.72（169）	2.87（212）	2.34（296）	7.93
Cu(3)/Hβ	2.74（167）	2.90（206）	2.83（295）	8.47
Cu(4)/Hβ	2.30（175）	2.84（225）	2.47（351）	7.61

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表 3 Cu(x)/Hβ催化剂上NO脱附峰面积和温度

Table 3 Area and temperature of NO desorption peak over the Cu(x)/Hβ catalysts

Peak	Area /a.u. (Temperature /℃)
Peak	Hβ	Cu(1)/Hβ	Cu(2)/Hβ	Cu(3)/Hβ	Cu(4)/Hβ
1	0.59(164)	0.92 (160)	3.64 (161)	3.16 (155)	4.06(161)
2	0.38(205)	0.72(236)	1.80 (231)	1.55 (232)	1.09(224)
3	0.24(233)	–	–	1.11 (300)	1.28(334)
4	–	–	–	–	0.76(375)
Total	1.21	1.64	5.44	5.82	7.19

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表 4 Cu(x)/Hβ催化剂上H₂-TPR表征

Table 4 H₂-TPR results of the Cu(x)/Hβ catalysts

Peak	Cu(1)/Hβ		Cu(2)/Hβ		Cu(3)/Hβ		Cu(4)/Hβ
Peak	t/℃	area/(a.u) (pct./%)	t/℃	area/(a.u) (pct./%)	t/℃	area/(a.u) (pct./%)	t/℃	area/(a.u) (pct./%)
A	–	–	237	4.64 (20.0)	230	9.50 (23.0)	229	14.67 (27.8)
B	308	2.03(42.3)	308	5.17 (22.3)	302	22.53 (54.5)	271	28.17 (53.2)
C	–	–	413	5.13 (22.1)	400	6.11 (14.8)	401	7.01 (13.3)
D	567	2.76(56.7)	519	8.23 (35.5)	525	3.18 (7.7)	527	3.01 (5.7)
Total	4.79		23.17		41.32		52.85

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表 5 Cu(2)/Hβ催化剂反应前后的电子能谱

Table 5 EDS analysis results of the catalyst at different reaction temperatures

Sample	Cu(2)/Hβ	Cu(2)/Hβ-100	Cu(2)/Hβ-150	Cu(2)/Hβ-200
Sulfur /%	0	3.1	1.9	0.6

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参考文献(36)

[1]	张文博, 陈佳玲, 郭立, 郑伟, 王光华, 郑申棵, 吴晓琴. 金属负载型分子筛催化剂的NH₃-SCR机理研究进展[J]. 燃料化学学报,2021,49(9):1294−1315. doi: 10.1016/S1872-5813(21)60080-4 ZHANG Wen-bo, CHEN Jia-ling, GUO Li, ZHENG Wei, WANG Guang-hua, ZHEN Sheng-ke, WU Xiao-qin. Research progress on NH₃-SCR mechanism of metal-supported zeolite catalysts[J]. J Fuel Chem Technol,2021,49(9):1294−1315. doi: 10.1016/S1872-5813(21)60080-4
[2]	张先龙, 胡晓芮, 刘仕雯, 杨祥瑾, 吴雪平, 王钧伟, 肖客松. 锰基累托石低温NH₃-SCR催化剂的制备方法[J]. 环境化学,2022,41(3):1−9. ZHANG Xian-long, HU Xiao-rui, LIU Shi-wen, YANG Xiang-jing, WU Xue-ping, WANG Jun-wei, XIAO Ke-song. The preparation method of manganese-based rectorite low-temperature NH₃-SCR catalyst[J]. Environ Chem,2022,41(3):1−9.
[3]	汤常金, 孙敬方, 董林. 超低温(<150 ℃)SCR脱硝技术研究进展[J]. 化工学报,2020,71(11):4873−4884, 5362. TANG Chang-jin, SUN Jing-fang, DONG Lin. Recent progress on elimination of NO_x from flue gas via SCR technology under ultra-low temperatures (< 150 ℃)[J]. CIESC J,2020,71(11):4873−4884, 5362.
[4]	卞若愚, 安忠义, 李启超, 朱纯, 孙镇坤, 段伦博. O₃-NH₃协同活性焦脱硫脱硝的均相预反应特性研究[J]. 中国环境科学,2021,41(10):4476−4483. doi: 10.3969/j.issn.1000-6923.2021.10.002 BIAN Ruo-yu, AN Zhong-yi, LI Qi-chao, ZHU Chun, SUN Zhen-kun, DUAN Lun-bo. Characteristics of simultaneous removal of NOxand SO₂ by O₃-NH₃ synergy[J]. China Environ Sci,2021,41(10):4476−4483. doi: 10.3969/j.issn.1000-6923.2021.10.002
[5]	MA L, CHENG Y, CAVATAIO G, MCCABE R W, FU L, LI J. Characterization of commercial Cu-SSZ-13 and Cu-SAPO-34 catalysts with hydrothermal treatment for NH₃-SCR of NO_x in diesel exhaust[J]. Chem Eng J,2013,225:323−330. doi: 10.1016/j.cej.2013.03.078
[6]	付金艳, 王振峰, 白心蕊, 崔梦壳, 武文斐. γ-Al₂O₃酸性修饰稀土尾矿NH₃-SCR脱硝性能[J]. 中国环境科学,2020,40(9):3741−3747. doi: 10.3969/j.issn.1000-6923.2020.09.004 FU Jin-yan, WANG Zhen-feng, BAI Xin-rui, CUI Men-kai, WU Wen-fei. Denitration performance of NH₃-SCR from γ-Al₂O₃ acid modified rare earth tailings[J]. China Environ Sci,2020,40(9):3741−3747. doi: 10.3969/j.issn.1000-6923.2020.09.004
[7]	ZHAN S, ZHANG H, ZHANG Y, SHI Q, LI Y, LI X. Efficient NH₃-SCR removal of NO_x with highly ordered mesoporous WO₃(CHI)-CeO₂ at low temperatures[J]. Appl Catal B: Environ,2017,203:199−209. doi: 10.1016/j.apcatb.2016.10.010
[8]	LEE S M, PARK K H, Hong S C. MnO_x/CeO₂-TiO₂ mixed oxide catalysts for the selective catalytic reduction of NO with NH₃ at low temperature[J]. Chem Eng J,2012,195−196:323−331.
[9]	LI Y, LI Y, WANG P, HU W, ZHANG S, SHI Q, ZHAN S. Low-temperature selective catalytic reduction of NO_x with NH₃ over MnFeO_x nanorods[J]. Chem Eng J,2017,330:213−222. doi: 10.1016/j.cej.2017.07.018
[10]	ZHAO Z, YU R, ZHAO R, SHI C, GIES H, XIAO F-S, DE VOS D, YOKOI T, BAO X, KOLB U, FEYEN M, MCGUIRE R, MAURER S, MOINI A, MüLLER U, ZHANG W. Cu-exchanged Al-rich SSZ-13 zeolite from organotemplate-free synthesis as NH₃-SCR catalyst: Effects of Na⁺ ions on the activity and hydrothermal stability[J]. Appl Catal B: Environ,2017,217:421−428. doi: 10.1016/j.apcatb.2017.06.013
[11]	ZHAO H, ZHAO Y, MA Y, YONG X, WEI M, CHEN H, ZHANG C, LI Y. Enhanced hydrothermal stability of a Cu-SSZ-13 catalyst for the selective reduction of NO_x by NH₃ synthesized with SAPO-34 micro-crystallite as seed[J]. J Catal,2019,377:218−223. doi: 10.1016/j.jcat.2019.07.023
[12]	YUE Y, LIU B, QIN P, LV N, WANG T, BI X, ZHU H, YUAN P, BAI Z, CUI Q, BAO X. One-pot synthesis of FeCu-SSZ-13 zeolite with superior performance in selective catalytic reduction of NO by NH₃ from natural aluminosilicates[J]. Chem Eng J,2020,398:125515. doi: 10.1016/j.cej.2020.125515
[13]	马子然, 王宝冬, 路光杰, 肖雨亭, 杨建辉, 陆金丰, 李歌, 周佳丽, 王红妍, 赵春林. 粉煤灰基SAPO-34分子筛脱硝催化剂的合成及其脱硝性能[J]. 化工进展,2020,39(10):4051−4060. doi: 10.16085/j.issn.1000-6613.2020-0011 MA Zi-ran, WANG Bao-dong, LU Guang-jie, XIAO Yu-ting, YANG Jian-hui, LU Jin-feng, LI Ge, ZHOU Jia-li, WANG Hong-yan, ZHAO Chun-lin. Preparation and performance of SAPO-34 based SCR catalyst derived from fly ash[J]. Chem Ind Eng Prog,2020,39(10):4051−4060. doi: 10.16085/j.issn.1000-6613.2020-0011
[14]	LI Q J, PEIMM, YAOP, XU S, XU S H, LIUS, XU HD, DAN Y, CHEN Y Q. Determining hydrothermal deacyivation mechanisms on Cu/SAPO-34 NH₃-SCR catalysts at low- and hing-reaction regions: establishing roles of different reaction sites[J]. Rare Metals,2022,41(6):1899−1910. doi: 10.1007/s12598-021-01933-8
[15]	其其格吉日嘎拉, 李晨曦, 叶青, 程锦, 程水源, 康天放. La-Cu/ZSM-5催化剂NH₃选择性催化还原NO的性能[J]. 环境化学,2020,39(9):2567−2575. doi: 10.7524/j.issn.0254-6108.2019062503 MUNKHJARGAL TSETSEGJARGAL, LI Chen-xi, YE Qing, CHENG Jin, CHENG Shui-yuan, KANG Tian-fang. La-Cu/ZSM-5 catalysts electively reduced NO by NH₃-SCR[J]. Environ Chem,2020,39(9):2567−2575. doi: 10.7524/j.issn.0254-6108.2019062503
[16]	邱爽, 肖永厚, 刘建辉, 贺高红. 一步法制备高活性NH₃-SCR催化剂Cu-SAPO-34: Si含量的影响[J]. 化工学报,2021,72(5):2578−2585. QIU Shuang, XIAO Yong-hou, LIU Jian-hui, HE Gao-hong. Enhanced NH₃-SCR performance over Cu-SAPO-34: Si prepared by one-step synthesis: Effect of Si contents[J]. CIESC J,2021,72(5):2578−2585.
[17]	IMAI H, HAYASHIDA N, YOKOI T, TATSUMI T. Direct crystallization of CHA-type zeolite from amorphous aluminosilicate gel by seed-assisted method in the absence of organic-structure-directing agents[J]. Microporous Mesoporous Mater,2014,196:341−348. doi: 10.1016/j.micromeso.2014.05.043
[18]	XIE B, ZHANG H, YANG C, LIU S, REN L, ZHANG L, MENG X, YILMAZ B, MULLER U, XIAO F S. Seed-directed synthesis of zeolites with enhanced performance in the absence of organic templates[J]. Chem Commun,2011,47(13):3945−3947. doi: 10.1039/c0cc05414c
[19]	LIU Q, LIU Z, WU W. Effect of V₂O₅ additive on simultaneous SO₂ and NO removal from flue gas over a monolithic cordierite-based CuO/Al₂O₃ catalyst[J]. Catal Today,2009,147:S285−S289. doi: 10.1016/j.cattod.2009.07.013
[20]	GAO F, WALTER E D, KARP E M, LUO J, TONKYN R G, KWAK J H, SZANYI J, PEDEN C H F. Structure-activity relationships in NH₃-SCR over Cu-SSZ-13 as probed by reaction kinetics and EPR studies[J]. J Catal,2013,300:20−29. doi: 10.1016/j.jcat.2012.12.020
[21]	任翠涛, 胡颖智, 魏浩宇, 李滨, 王虹, 丁福臣, 李翠清, 宋永吉. SO₂存在条件下M/REY催化剂NH₃选择性还原NO性能研究[J]. 燃料化学学报,2013,41(10):1241−1247. REN Cui-tao, HU Ying-zhi, WEI Hao-yu, LI Bin, WANG Hong, DING Fu-chen, LI Cui-qing, SONG Yong-ji. NH₃ selective catalytic reduction of NO over M/REY catalysts in presence of SO₂[J]. J Fuel Chem Technol,2013,41(10):1241−1247.
[22]	SHEVLIN S. Looking deeper into zeolites[J]. Nat Mater,2020,19(10):1038−1039. doi: 10.1038/s41563-020-0787-4
[23]	HINCAPIE B O, GARCES L J, ZHANG Q, SACCO A, SUIB S L. Synthesis of mordenite nanocrystals[J]. Microporous Mesoporous Mater,2004,67(1):19−26. doi: 10.1016/j.micromeso.2003.09.026
[24]	RAVI M, SUSHKEVICH V L, VAN B J A. Towards a better understanding of Lewis acidic aluminium in zeolites[J]. Nat Mater,2020,19(10):1047−1056. doi: 10.1038/s41563-020-0751-3
[25]	SU W, LI Z, PENG Y, LI J. Correlation of the changes in the framework and active Cu sites for typical Cu/CHA zeolites (SSZ-13 and SAPO-34) during hydrothermal aging[J]. Phys Chem Chem Phys,2015,17(43):29142−29149. doi: 10.1039/C5CP05128B
[26]	XU M, WANG J, YU T, WANG J, SHEN M. New insight into Cu/SAPO-34 preparation procedure: Impact of NH₄-SAPO-34 on the structure and Cu distribution in Cu-SAPO-34 NH₃-SCR catalysts[J]. Appl Catal B: Environ,2018,220:161−170. doi: 10.1016/j.apcatb.2017.08.031
[27]	LIU B, LV N G, WANG C, ZHANG H W, YUE Y Y, JINGDONG XU J D, BI X T, BAO X J. Redistributing Cu species in Cu-SSZ-13 zeolite as NH3-SCR catalyst via a simple ion-exchange[J]. Chin J Chem Eng,2022,41:329−341. doi: 10.1016/j.cjche.2021.10.027
[28]	WANG H M, LI W, XU S Y, LIU M, HAO J M, NING P, QIULIN ZHANG Q L. Insights into the impact of lanthanum on hydrothermal-induced migration and transformation of copper species in Cu/SAPO-34 catalyst for NH₃-SCR[J]. Mol Catal,2021,515:111914. doi: 10.1016/j.mcat.2021.111914
[29]	MING S J, PANG L, CHEN Z, GUO Y B, GUO L, LIU Q, LIU P, DONG Y H, ZHANG S T, LI T. Insight into SO₂ poisoning over Cu-SAPO-18 used for NH₃-SCR[J]. Microporous Mesoporous Mater,2020,303:110294. doi: 10.1016/j.micromeso.2020.110294
[30]	白书立, 张晓玉, 薛瑶佳, 李换英, 郏建波. 碳化硅负载氧化铜催化剂低温NH₃选择性催化还原NO_x的性能[J]. 燃料化学学报,2020,48(6):723−727. doi: 10.3969/j.issn.0253-2409.2020.06.011 BAI Shu-li L, ZHANG Xiao-yu, XUE Yao-jia, LI Huan-ying, JIA Jian-bo. Silicon carbon-supported copper oxide catalysts for the selective catalytic reduction of NO_x with NH₃ at low temperature[J]. J Fuel Chem Technol,2020,48(6):723−727. doi: 10.3969/j.issn.0253-2409.2020.06.011
[31]	YE D, REN X, QU R, LIU S, ZHENG C, GAO X. Designing SO₂-resistant cerium-based catalyst by modifying with Fe₂O₃ for the selective catalytic reduction of NO with NH₃[J]. Mol Catal,2019,462:10−18. doi: 10.1016/j.mcat.2018.10.007
[32]	焦坤灵, 赵阳国, 武文斐, 王振峰, 龚志军. SO₂对稀土精矿催化剂NH₃-SCR脱硝催化性能的影响[J]. 化工学报,2019,70(12):4645−4653. JIAO Kun-ling, ZHAO Yang-guo, WU Wen-fei, WANG Zhen-feng, GONG Zhi-jun. Effect of SO₂ on catalytic performance of rare earth concentrate catalyst for NH₃-SCR denitrification[J]. CIESC J,2019,70(12):4645−4653.
[33]	魏永林, 陈红萍, 侯欣辛, 杨旭, 李泽清. Fe-Mn/TiO₂低温NH₃-SCR脱硝催化剂的SO₂中毒机理[J]. 功能材料,2021,52(4):4132−4139, 4146. doi: 10.3969/j.issn.1001-9731.2021.04.020 WEI Yong-lin, CHEN Hong-ping, HOU Xin-xin, YANG Xu, LI Ze-qing. SO₂ poisoning mechanism of Fe-Mn/TiO₂ catalyst for low-temperature NH₃-SCR deniteation[J]. J Funct Mater,2021,52(4):4132−4139, 4146. doi: 10.3969/j.issn.1001-9731.2021.04.020
[34]	陈潇雪, 宋敏, 孟凡跃, 卫月星. Fe_xMnCe₁-AC低温SCR催化剂SO₂中毒机理研究[J]. 化工学报,2019,70(8):3000−3010. CHEN Xiao-xue, SONG Min, MENG Fan-yue, WEI Yue-xing. Mechanism study on SO₂ poisoning of FexMnCe1-AC catalyst for low-temperature SCR[J]. CIESC J,2019,70(8):3000−3010.
[35]	肖雨亭, 吴鹏, 王玲, 张亚平. Ce改性Fe-Mn/TiO₂低温SCR脱硝催化剂硫中毒机理[J]. 化工环保,2019,39(4):431−436. doi: 10.3969/j.issn.1006-1878.2019.04.011 XIAO Yu-ting, WU Peng, WANG Ling, ZHANG Ya-ping. Mechanism of sulfur poisoning on low-temperature SCR denitration catalyst Ce-modified Fe-Mn/TiO₂[J]. Environ Prot Chem Ind,2019,39(4):431−436. doi: 10.3969/j.issn.1006-1878.2019.04.011
[36]	ROMANO E J, SCHULZ K H. A XPS investigation of SO₂ adsorption on ceria-zirconia mixed-metal oxides[J]. Appl Surf Sci,2005,246(1/3):262−270.