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学者姓名:何洪
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Abstract :
The expandable graphite (EG) modified TiO2 nanocomposites were prepared by the high shear method using the TiO2 nanoparticles (NPs) and EG as precursors, in which the amount of EG doped in TiO2 was 10 wt.%. Followed by the impregnation method, adjusting the pH of the solution to 10, and using the electrostatic adsorption to achieve spatial confinement, the Pt elements were mainly distributed on the exposed TiO2, thus generating the Pt/10EG-TiO2- 10 catalyst. The best CO oxidation activity with the excellent resistance to H2O and SO2 was obtained over the Pt/10EG-TiO2 -10 catalyst: CO conversion after 36 hr of the reaction was ca. 85% under the harsh condition of 10 vol.% H2O and 100 ppm SO2 at a high gaseous hourly space velocity (GHSV) of 400,000 hr -1 . Physicochemical properties of the catalysts were characterized by various techniques. The results showed that the electrostatic adsorption, which riveted the Pt elements mainly on the exposed TiO2 of the support surface, reduced the dispersion of Pt NPs on EG and achieved the effective dispersion of Pt NPs, hence significantly improving CO oxidation activity over the Pt/10EG-TiO2 -10 catalyst. The 10 wt.% EG doped in TiO2 caused the TiO2 support to form a more hydrophobic surface, which reduced the adsorption of H2O and SO2 on the catalyst, greatly inhibited deposition of the TiOSO4 and formation of the PtSO4 species as well as suppressed the oxidation of SO2, thus resulting in an improvement in the resistance to H2O and SO2 of the Pt/10EG-TiO2 -10 catalyst. (c) 2024 The Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences. Published by Elsevier B.V.
Keyword :
CO oxidation CO oxidation Resistance toH2 O andSO2 Resistance toH2 O andSO2 Electrostatic adsorption Electrostatic adsorption Titania supported platinum Titania supported platinum Expandable graphite Expandable graphite
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| GB/T 7714 | Zhu, Hongtai , Qiu, Wenge , Wu, Rui et al. Spatial confinement: An effective strategy to improve H2O and SO2 resistance of the expandable graphite-modified TiO2-supported Pt nanocatalysts for CO oxidation [J]. | JOURNAL OF ENVIRONMENTAL SCIENCES , 2025 , 148 : 57-68 . |
| MLA | Zhu, Hongtai et al. "Spatial confinement: An effective strategy to improve H2O and SO2 resistance of the expandable graphite-modified TiO2-supported Pt nanocatalysts for CO oxidation" . | JOURNAL OF ENVIRONMENTAL SCIENCES 148 (2025) : 57-68 . |
| APA | Zhu, Hongtai , Qiu, Wenge , Wu, Rui , Li, Kai , He, Hong . Spatial confinement: An effective strategy to improve H2O and SO2 resistance of the expandable graphite-modified TiO2-supported Pt nanocatalysts for CO oxidation . | JOURNAL OF ENVIRONMENTAL SCIENCES , 2025 , 148 , 57-68 . |
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Abstract :
负载型金属纳米粒子催化剂被广泛应用于化工工业生产中,但由于金属在高温环境中容易烧结而导致催化剂失活,因此提高催化剂的高温热稳定性是多相催化领域的重大挑战.本文概述了金属纳米颗粒的高温烧结机制:纳米粒子迁移-聚集过程(PMC)和Ostwald熟化(OR),讨论了近年来通过增强金属-载体相互作用、调节金属纳米粒子与包裹层之间的界面效应、构建多功能结构等方法在制备抗烧结型金属纳米催化剂方面的研究进展并对其进行总结.
Keyword :
高温热稳定性 高温热稳定性 烧结 烧结 催化剂工程 催化剂工程 金属纳米粒子 金属纳米粒子
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| GB/T 7714 | 李淑贞 , 张桂臻 , 杨晓栋 et al. 抗烧结型金属纳米催化剂的制备策略 [J]. | 工业催化 , 2023 , 31 (7) : 1-14 . |
| MLA | 李淑贞 et al. "抗烧结型金属纳米催化剂的制备策略" . | 工业催化 31 . 7 (2023) : 1-14 . |
| APA | 李淑贞 , 张桂臻 , 杨晓栋 , 张龙 , 陈戈 , 邱文革 et al. 抗烧结型金属纳米催化剂的制备策略 . | 工业催化 , 2023 , 31 (7) , 1-14 . |
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Microwave-assisted selective catalytic reduction of nitrogen oxides (NOx) was investigated over Ni-based metal oxides. The NiMn2O4 and NiCo2O4 catalysts were synthesized by the co-precipitation method and their activities were evaluated as potential candidate catalysts for low-temperature NH3-SCR in a microwave field. The physicochemical properties and structures of the catalysts were characterized by X-ray diffraction (XRD), Scanning electron microscope (SEM), N-2-physisorption, NO adsorption-desorption in the microwave field, H-2-temperature programmed reduction (H-2-TPR) and NH3-temperature programmed desorption (NH3-TPD). The results verified that microwave radiation reduced the reaction temperature required for NH3-SCR compared to conventional heating, which needed less energy. For the NiMn2O4 catalyst, the catalytic efficiency exceeded 90% at 70 C and reached 96.8% at 110 C in the microwave field. Meanwhile, the NiMn2O4 also exhibited excellent low-temperature NH3-SCR reaction performance under conventional heating conditions, which is due to the high BET specific surface area, more suitable redox property, good NO adsorption-desorption in the microwave field and rich acidic sites.
Keyword :
Selective catalytic reduction Selective catalytic reduction NOx NOx Microwave field Microwave field Spinel oxides Spinel oxides
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| GB/T 7714 | Song, Liyun , Deng, Shilin , Bian, Chunyi et al. NiB2O4 (B = Mn or Co) catalysts for NH3-SCR of NOx at low-temperature in microwave field [J]. | FRONTIERS OF ENVIRONMENTAL SCIENCE & ENGINEERING , 2023 , 17 (8) . |
| MLA | Song, Liyun et al. "NiB2O4 (B = Mn or Co) catalysts for NH3-SCR of NOx at low-temperature in microwave field" . | FRONTIERS OF ENVIRONMENTAL SCIENCE & ENGINEERING 17 . 8 (2023) . |
| APA | Song, Liyun , Deng, Shilin , Bian, Chunyi , Liu, Cui , Zhan, Zongcheng , Li, Shuangye et al. NiB2O4 (B = Mn or Co) catalysts for NH3-SCR of NOx at low-temperature in microwave field . | FRONTIERS OF ENVIRONMENTAL SCIENCE & ENGINEERING , 2023 , 17 (8) . |
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Abstract :
一种针对不同靶点蛋白进行药物设计的通用性方法属于计算机人工智能与新药设计领域,包括训练分子生成模型、训练药物靶标亲和力预测模型,以亲和力模型输出作为奖励函数,通过强化学习使分子生成神经网络生成的分子与蛋白质有更好的亲和力。将某个靶点蛋白的氨基酸序列输入到已经训练好的药物设计机器学习模型中,得到针对这个靶点蛋白的小分子抑制剂化合物。
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| GB/T 7714 | 孙少瑞 , 张云江 , 何洪 . 一种针对不同靶点蛋白进行药物设计的通用性方法 : CN202210051113.9[P]. | 2022-01-17 . |
| MLA | 孙少瑞 et al. "一种针对不同靶点蛋白进行药物设计的通用性方法" : CN202210051113.9. | 2022-01-17 . |
| APA | 孙少瑞 , 张云江 , 何洪 . 一种针对不同靶点蛋白进行药物设计的通用性方法 : CN202210051113.9. | 2022-01-17 . |
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Abstract :
本发明属于大气污染治理技术和环保催化材料技术领域,公开了一种同时去除烟气中氮氧化物和一氧化碳的催化剂及制备方法和应用。本发明中所述催化剂以可溶性锰盐分别与可溶性钴盐、可溶性镍盐混合,采用共沉淀法、水热法制备得到锰钴复合氧化物、镍锰复合氧化物。采用微波加热方法对锰钴复合氧化物、镍锰复合氧化物进行活性评价,所述锰钴复合氧化物、镍锰复合氧化物催化剂能够在低温条件下对氮氧化物和一氧化碳都起到很好的去除作用。
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| GB/T 7714 | 宋丽云 , 刘翠 , 邓世林 et al. 一种同时去除烟气中氮氧化物和一氧化碳的催化剂及制备方法和应用 : CN202210903968.X[P]. | 2022-07-28 . |
| MLA | 宋丽云 et al. "一种同时去除烟气中氮氧化物和一氧化碳的催化剂及制备方法和应用" : CN202210903968.X. | 2022-07-28 . |
| APA | 宋丽云 , 刘翠 , 邓世林 , 李坚 , 边春艺 , 何洪 . 一种同时去除烟气中氮氧化物和一氧化碳的催化剂及制备方法和应用 : CN202210903968.X. | 2022-07-28 . |
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| GB/T 7714 | Zhang, Ningqiang , Li, Lingcong , Chu, Ya et al. High Pt utilization efficiency of electrocatalysts for oxygen reduction reaction in alkaline media (vol 332, pg 101, 2019) [J]. | CATALYSIS TODAY , 2022 , 388-389 : 424-425 . |
| MLA | Zhang, Ningqiang et al. "High Pt utilization efficiency of electrocatalysts for oxygen reduction reaction in alkaline media (vol 332, pg 101, 2019)" . | CATALYSIS TODAY 388-389 (2022) : 424-425 . |
| APA | Zhang, Ningqiang , Li, Lingcong , Chu, Ya , Zheng, Lirong , Sun, Shaorui , Zhang, Guizhen et al. High Pt utilization efficiency of electrocatalysts for oxygen reduction reaction in alkaline media (vol 332, pg 101, 2019) . | CATALYSIS TODAY , 2022 , 388-389 , 424-425 . |
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Abstract :
In recent years, low-temperature SCR (Selective Catalytic Reduction) denitrification technology has been popularized in non-power industries and has played an important role in the control of industrial flue gas NOx emissions in China. Currently, the most commonly used catalysts in industry are V2O5-WO3(MoO3)/TiO2, MnO2-based catalysts, CeO2-based catalysts, MnO2-CeO2 catalysts and zeolite SCR catalysts. The flue gas emitted during industrial combustion usually contains SO2, moisture and alkali metals, which can affect the service life of SCR catalysts. This paper summarizes the mechanism of catalyst poisoning and aims to reduce the negative effect of NH4HSO4 on the activity of the SCR catalyst at low temperatures in industrial applications. It also presents the outstanding achievements of domestic companies in denitrification in the non-power industry in recent years. Much progress has been made in the research and application of low-temperature NH3-SCR, and with the renewed demand for deeper NOx treatments, new technologies with lower energy consumption and more functions need to be developed.
Keyword :
selective catalytic reduction selective catalytic reduction low temperature low temperature nitrogen oxides nitrogen oxides non-power non-power catalyst poisoning catalyst poisoning
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| GB/T 7714 | Zhu, Hongtai , Song, Liyun , Li, Kai et al. Low-Temperature SCR Catalyst Development and Industrial Applications in China [J]. | CATALYSTS , 2022 , 12 (3) . |
| MLA | Zhu, Hongtai et al. "Low-Temperature SCR Catalyst Development and Industrial Applications in China" . | CATALYSTS 12 . 3 (2022) . |
| APA | Zhu, Hongtai , Song, Liyun , Li, Kai , Wu, Rui , Qiu, Wenge , He, Hong . Low-Temperature SCR Catalyst Development and Industrial Applications in China . | CATALYSTS , 2022 , 12 (3) . |
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Abstract :
Developing a catalyst with high SO2 and H2O resistance to achieve high-performance CO oxidation for specific industrial applications is highly desirable. Here, three catalysts were prepared using cerium titanium composite oxide (CeTi), molybdophosphate with Keggin structure-modified CeTi (Keg-CeTi), and molybdophosphate without Keggin structure-modified CeTi (MoP-CeTi) as supports, and their sulfur and water resistance in CO oxidation were tested. The characterization of XRD, BET, SO2/H2O-DRIFTS, XPS, TEM, SEM, NH3/SO2-TPD, H-2-TPR, and ICP techniques revealed that the high SO2 and H2O resistance of Pt/Keg-CeTi in CO oxidation was related to its stronger surface acidity, better reduction of surface cerium and molybdenum species, and lower SO2 adsorption and transformation compared to Pt/CeTi and Pt/MoP-CeTi.
Keyword :
platinum-based catalyst platinum-based catalyst Keggin structure Keggin structure sulfur and water resistance sulfur and water resistance CO oxidation CO oxidation
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| GB/T 7714 | Zhang, Tong , Qiu, Wenge , Zhu, Hongtai et al. Promotion Effect of the Keggin Structure on the Sulfur and Water Resistance of Pt/CeTi Catalysts for CO Oxidation [J]. | CATALYSTS , 2022 , 12 (1) . |
| MLA | Zhang, Tong et al. "Promotion Effect of the Keggin Structure on the Sulfur and Water Resistance of Pt/CeTi Catalysts for CO Oxidation" . | CATALYSTS 12 . 1 (2022) . |
| APA | Zhang, Tong , Qiu, Wenge , Zhu, Hongtai , Ding, Xinlei , Wu, Rui , He, Hong . Promotion Effect of the Keggin Structure on the Sulfur and Water Resistance of Pt/CeTi Catalysts for CO Oxidation . | CATALYSTS , 2022 , 12 (1) . |
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Abstract :
一种改进的ALD方法沉积CeO2的方法,涉及贵金属催化技术领域,本发明涉及到的催化剂再生主要包括以下步骤:在手套箱中称取一定量的四(四甲基庚二酮)铈和一定量的商用催化剂Pd/Al2O3一同混合放入聚四氟乙烯内衬中,密封之后取出,放入烘箱中加热,然后取出放入马弗炉中,在空气氛围下焙烧,得到Pd/Al2O3@CeO2催化剂,重复以上步骤,即可得到沉积不同厚度的CeO2层;CeO2作为保护层,使催化剂热稳定性得到提升,催化剂在800℃老化后仍然保持较高催化活性。
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| GB/T 7714 | 张桂臻 , 徐亚蒙 , 何洪 et al. 一种改进的ALD方法沉积CeO2的方法 : CN202110294341.4[P]. | 2021-03-18 . |
| MLA | 张桂臻 et al. "一种改进的ALD方法沉积CeO2的方法" : CN202110294341.4. | 2021-03-18 . |
| APA | 张桂臻 , 徐亚蒙 , 何洪 , 何泽源 , 李淑贞 . 一种改进的ALD方法沉积CeO2的方法 : CN202110294341.4. | 2021-03-18 . |
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Abstract :
一种负载型铂基三效催化剂再生方法,涉及贵金属催化技术领域,本发明涉及到的催化剂再生主要包括以下步骤:取一定量的商业催化剂Pt/CeO2,放置在在马弗炉中800℃,5h老化,得到已经烧结的催化剂,然后使用原子层沉积仪器(ALD)进行涂覆不同氧化物层,使已经烧结失活的催化剂得到再生。本发明所述方法可使已经烧结失活的催化剂再生,使其恢复一定催化活性。
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| GB/T 7714 | 张桂臻 , 徐亚蒙 , 何洪 et al. 一种负载型铂基三效催化剂再生方法 : CN202110294324.0[P]. | 2021-03-18 . |
| MLA | 张桂臻 et al. "一种负载型铂基三效催化剂再生方法" : CN202110294324.0. | 2021-03-18 . |
| APA | 张桂臻 , 徐亚蒙 , 何洪 , 何泽源 , 李淑贞 . 一种负载型铂基三效催化剂再生方法 : CN202110294324.0. | 2021-03-18 . |
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