| Mn-Ce/Ti-PILC催化剂低温脱硝性能研究 |
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| 引用本文： | 陈定盛,钟少涛,岑超平,唐志雄,沈亦诗.Mn-Ce/Ti-PILC催化剂低温脱硝性能研究[J].化工环保,2021,40(6):632-638. |
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| 作者姓名： | 陈定盛 钟少涛 岑超平 唐志雄 沈亦诗 |
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| 作者单位： | 1.广州华科环保工程有限公司,广东 广州 510655;2.生态环境部华南环境科学研究所,广东 广州 510655;3.广东省水与大气污染防治重点实验室,广东 广州 510655;4.广东省大气污染控制工程实验室,广东 广州 510655 |
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| 基金项目： | 国家重点研发计划项目(2017YFC0210803,2019YFC0214303);国家自然科学基金项目(51408256,51778264);广东省科技计划项目(2017A030223005);广州市科技计划项目(201804010147,201710010186);中央级公益性科研院所基本科研业务费专项资金项目(PM-zx703-202003-103) |
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| 摘 要： | 以钛基柱撑黏土(Ti-PILC)为载体,采用浸渍法制备了Mn-Ce/Ti-PILC催化剂,并考察了其脱硝性能。在n(Ti)∶m(黏土)为15 mmol/g、焙烧温度为400 ℃、Mn-Ce负载量(w)为12%和6%、空速为120 000 h-1的条件下,Mn-Ce/Ti-PILC在宽温度窗口180~260 ℃的NO转化率可达90%以上,N2选择性可达80%以上;220 ℃时NO转化率接近100%,N2选择性达86%左右。柠檬酸和Mo的掺杂可进一步提高Mn-Ce/Ti-PILC的脱硝性能。Ti-PILC载体结构有助于活性组分分散,且Ti与Mn-Ce之间可形成强相互作用。Ce的加入可降低催化剂酸性位点强度。
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| 关 键 词： | 选择性催化还原 Ti基柱撑黏土 锰铈氧化物 脱硝催化剂 |
| 收稿时间： | 2020-03-27 |
Performance of Mn-Ce/Ti-PILC catalyst on low-temperature denitration |
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| CHEN Dingsheng,ZHONG Shaotao,CEN Chaoping,TANG Zhixiong,SHEN Yishi.Performance of Mn-Ce/Ti-PILC catalyst on low-temperature denitration[J].Environmental Protection of Chemical Industry,2021,40(6):632-638. |
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| Authors: | CHEN Dingsheng ZHONG Shaotao CEN Chaoping TANG Zhixiong SHEN Yishi |
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| Institution: | 1. Guangzhou Huake Environmental Protection Engineering Co. Ltd. ,Guangzhou 510655,China;2. South China Institute of Environmental Sciences,Ministry of Ecology and Environment,Guangzhou 510655,China;3. The Key Laboratory of Water and Air Pollution Control of Guangdong Province,Guangzhou 510655,China;4. The Laboratory of Air Pollution Control Engineering of Guangdong Province,Guangzhou 510655,China |
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| Abstract: | Using Ti pillar interlayered clay (Ti-PILC) as a support,the Mn-Ce/Ti-PILC catalyst was prepared by impregnation method and its denitration performance was investigated. Under the conditions of n(Ti)∶m(clay) 15 mmol/g,calcination temperature 400 ℃,loading amount(w) of Mn and Ce 12% and 6% and space velocity 120 000 h-1,the NO conversion rate in a wide temperature window of 180-260 ℃ can reach more than 90%,and the N2 selectivity can reach more than 80%,respectively;At 220 ℃,the NO conversion rate is close to 100% and the N2 selectivity can reach about 86%. The doping of citric acid and Mo can further improve the denitration performance of Mn-Ce/Ti-PILC. The structure of Ti-PILC carrier facilitates the dispersion of active components,and a strong interaction can be formed between Ti and Mn-Ce. The addition of Ce can reduce the strength of the acid sites of the catalyst. |
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| Keywords: | selective catalytic reduction Ti pillar interlayered clay manganese cerium oxide denitration catalyst |
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