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摘要 ：
Rare earth metals are strategic resources with potential applications in optics, metallurgy and catalysis. In recent years, single-atom site catalysts (SASCs) have attracted increasing attention owing to their 100% atom efficiency and unique catalytic performances. Over the past decade, rare earth elements, including rare earth metals and their oxides, have shown great potential in SASCs. However, systematic analyses of data are still handful. In this mini-review, the use of rare earth metals and their oxides in SASCs was summarized and the results are discussed. A particular focus was paid to the synthetic strategies, characterization of rare earth-containing SASCs, and applications as catalysis supports, promoters and active sites. Current issues faced by rare-earth metals and their oxides in SASCs, as well as future prospects were also provided. (C) 2020 Chinese Society of Rare Earths. Published by Elsevier B.V. All rights reserved.
关键词 ：
Applications Applications Characterization Characterization Rare earth catalysis Rare earth catalysis Single-atom site catalysis Single-atom site catalysis Synthetic strategies Synthetic strategies
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| GB/T 7714 | Zhang, Ningqiang , Yan, Han , Li, Lingcong et al. Use of rare earth elements in single-atom site catalysis: A critical review - Commemorating the 100th anniversary of the birth of Academician Guangxian Xu [J]. | JOURNAL OF RARE EARTHS , 2021 , 39 (3) : 233-242 . |
| MLA | Zhang, Ningqiang et al. "Use of rare earth elements in single-atom site catalysis: A critical review - Commemorating the 100th anniversary of the birth of Academician Guangxian Xu" . | JOURNAL OF RARE EARTHS 39 . 3 (2021) : 233-242 . |
| APA | Zhang, Ningqiang , Yan, Han , Li, Lingcong , Wu, Rui , Song, Liyun , Zhang, Guizhen et al. Use of rare earth elements in single-atom site catalysis: A critical review - Commemorating the 100th anniversary of the birth of Academician Guangxian Xu . | JOURNAL OF RARE EARTHS , 2021 , 39 (3) , 233-242 . |
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摘要 ：
汽车尾气污染已成为我国大气污染的重要来源,是大气污染防治的重中之重.三效催化剂(TWC)是汽油车和天然气车尾气治理的商业化技术,也是在公众产品市场上使用催化技术的最显著成就之一,对汽车尾气污染物减排具有划时代的重大意义.本文首先简要介绍了TWC的基本原理,回顾了世界(美国为代表)治理汽车尾气40多年的发展历史,特别是近20年来我国在TWC方面的技术进步和实践,然后重点介绍了稀土储氧材料、载体和涂覆技术、密偶催化剂和四效催化剂等进展,最后针对未来低油耗和低CO2排放的汽车需求,展望了未来的TWC和稀燃发动机尾气催化净化技术.
关键词 ：
三效催化剂 三效催化剂 储氧材料 储氧材料 汽油机颗粒捕集器 汽油机颗粒捕集器 汽油车 汽油车 蜂窝载体 蜂窝载体
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| GB/T 7714 | 张昭良 , 何洪 , 赵震 . 汽车尾气三效催化剂研究和应用40年 [J]. | 环境化学 , 2021 , 40 (7) : 1937-1944 . |
| MLA | 张昭良 et al. "汽车尾气三效催化剂研究和应用40年" . | 环境化学 40 . 7 (2021) : 1937-1944 . |
| APA | 张昭良 , 何洪 , 赵震 . 汽车尾气三效催化剂研究和应用40年 . | 环境化学 , 2021 , 40 (7) , 1937-1944 . |
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摘要 ：
In this paper, the preparation of V2O5-MoO3/TiO2-expanded graphite (EG) by different methods was investigated to enhance the H2O resistance in SCR reaction. The catalyst with doping of EG by high shear method showed the best SCR performance. BET, TEM, XPS, H-2-TPR, NH3-TPD and FT-IR were used to analyze the physicochemical characteristics of the prepared catalysts. The results indicated that TiO2 particles were distributed uniformly with EG by high shear method, which enhanced the surface area, increased Bronsted and Lewis acid sites and raised the VO2+ and adsorbed oxygen species on the surface. It was found that even with the addition of H2O (20 %) and SO2 at low temperature, the catalyst doping of EG by high shear method maintained about 90 % NO conversion. In addition, in-situ DRIFT spectra results showed that the NH3-SCR reaction over Cat-1 and Cat-2 followed the E-R and L-H mechanism, and the NH3 and NOx adsorbed species on the surface of Cat-2 possessed higher activity in SCR reaction than Cat-1.
关键词 ：
Expanded graphite Expanded graphite High shear method High shear method NH3-SCR NH3-SCR V2O5-MoO3/TiO2 V2O5-MoO3/TiO2
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| GB/T 7714 | Wu, Rui , Li, Lingcong , Zhang, Ningqiang et al. Enhancement of low-temperature NH3-SCR catalytic activity and H2O & SO2 resistance over commercial V2O5-MoO3/TiO2 catalyst by high shear-induced doping of expanded graphite [J]. | CATALYSIS TODAY , 2021 , 376 : 302-310 . |
| MLA | Wu, Rui et al. "Enhancement of low-temperature NH3-SCR catalytic activity and H2O & SO2 resistance over commercial V2O5-MoO3/TiO2 catalyst by high shear-induced doping of expanded graphite" . | CATALYSIS TODAY 376 (2021) : 302-310 . |
| APA | Wu, Rui , Li, Lingcong , Zhang, Ningqiang , He, Junda , Song, Liyun , Zhang, Guizhen et al. Enhancement of low-temperature NH3-SCR catalytic activity and H2O & SO2 resistance over commercial V2O5-MoO3/TiO2 catalyst by high shear-induced doping of expanded graphite . | CATALYSIS TODAY , 2021 , 376 , 302-310 . |
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摘要 ：
Fe-based catalysts have a great potential to be used for selective catalytic reduction (SCR) of NOx with NH3 reaction due to their low cost, nontoxicity and excellent catalytic activity. The aim of this paper is to investigate Ce doping effect on activity of NH3-SCR over the FeOx/TiO2 catalyst. In-situ diffuse reflectance infrared fourier transform (DRIFT) technology was utilized to verify the adsorbed species on the surface of FeOx/TiO2 and FeOx-CeO2/TiO2 catalysts. With respect to the obtained results, among the four catalysts studied, the FeOx-CeO2/TiO2 with the FeOx/CeO2 ratio of 3/8 shows the best NO conversion more than 98% in the temperature range of 230-350 degrees C. The active centers for NH3 adsorption and activation are assigned to Lewis acid sites over the FeOx-CeO2/TiO2 and monodentate nitrates can act as the key intermediate in the NH3-SCR. Moreover, both of Langmuir-Hinshelwood and Eley-Rideal mechanisms are observed over the FeOx-CeO2/TiO2 catalysts in the SCR. (C) 2020 Published by Elsevier B.V. on behalf of Chinese Society of Rare Earths.
关键词 ：
Ce doping Ce doping Fe-based catalysts Fe-based catalysts In-situ DRIFT In-situ DRIFT Rare earths Rare earths Selective catalytic reduction Selective catalytic reduction
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| GB/T 7714 | Chitsazi, Hossein , Zhang, Ningqiang , Li, Lingcong et al. In-situ DRIFT assessment on strengthening effect of cerium over FeOx/TiO2 catalyst for selective catalytic reduction of NOx with NH3 [J]. | JOURNAL OF RARE EARTHS , 2021 , 39 (5) : 526-531 . |
| MLA | Chitsazi, Hossein et al. "In-situ DRIFT assessment on strengthening effect of cerium over FeOx/TiO2 catalyst for selective catalytic reduction of NOx with NH3" . | JOURNAL OF RARE EARTHS 39 . 5 (2021) : 526-531 . |
| APA | Chitsazi, Hossein , Zhang, Ningqiang , Li, Lingcong , Liu, Xiaojun , Wu, Rui , He, Junda et al. In-situ DRIFT assessment on strengthening effect of cerium over FeOx/TiO2 catalyst for selective catalytic reduction of NOx with NH3 . | JOURNAL OF RARE EARTHS , 2021 , 39 (5) , 526-531 . |
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| GB/T 7714 | Zhang, Ningqiang , Li, Lingcong , Guo, Yizhong et al. A MnO2-based catalyst with H2O resistance for NH3-SCR: Study of catalytic activity and reactants-H2O competitive adsorption (vol 270, 118860, 2020) [J]. | APPLIED CATALYSIS B-ENVIRONMENTAL , 2021 , 284 . |
| MLA | Zhang, Ningqiang et al. "A MnO2-based catalyst with H2O resistance for NH3-SCR: Study of catalytic activity and reactants-H2O competitive adsorption (vol 270, 118860, 2020)" . | APPLIED CATALYSIS B-ENVIRONMENTAL 284 (2021) . |
| APA | Zhang, Ningqiang , Li, Lingcong , Guo, Yizhong , He, Junda , Wu, Rui , Song, Liyun et al. A MnO2-based catalyst with H2O resistance for NH3-SCR: Study of catalytic activity and reactants-H2O competitive adsorption (vol 270, 118860, 2020) . | APPLIED CATALYSIS B-ENVIRONMENTAL , 2021 , 284 . |
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摘要 ：
The process of discovering and developing new materials currently requires considerable effort, time, and expense. Machine learning (ML) algorithms can potentially provide quick and accurate methods for screening new materials. In the present work, the features of the metal organic frameworks (MOFs) as a catalyst for fixing carbon dioxide into cyclic carbonate were extracted to build a data set, which were collected from the experimental results of approximately 100 published papers. Classifiers were trained with the data set with various ML algorithms, including support vector machine (SVM), K-nearest neighbor classification (KNN), decision trees (DT), stochastic gradient descent (SGD), and neural networks (NN), to predict the catalytic performance. The ML models were trained on 80% of the data set and then tested on the remaining 20% to predict the carbon dioxide fixation ability. The trained ML model was extended to explore 1311 hypothetical MOFs, and some structures displayed a strong catalytic ability. Finally, the six best metal ions (Mn, V, Cu, Ni, Zr and Y) and four best ligands (tactmb, tdcbpp, TCPP, H3L) were determined. These six metals and four ligands could be combined into 24 MOFs, which are strongly potential catalysts for carbon dioxide fixation. Using machine learning methods can speed up the screening of materials, and this methodology is promising for application not only to MOFs as catalysts but also in many other materials science projects. (C) 2021 The Chinese Ceramic Society. Production and hosting by Elsevier B.V.
关键词 ：
Catalysts Catalysts CO2 fixation CO2 fixation Cyclic carbonate Cyclic carbonate Machine learning Machine learning Metal-organic frameworks Metal-organic frameworks
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| GB/T 7714 | Li, Shuyuan , Zhang, Yunjiang , Hu, Yuxuan et al. Predicting metal-organic frameworks as catalysts to fix carbon dioxide to cyclic carbonate by machine learning [J]. | JOURNAL OF MATERIOMICS , 2021 , 7 (5) : 1029-1038 . |
| MLA | Li, Shuyuan et al. "Predicting metal-organic frameworks as catalysts to fix carbon dioxide to cyclic carbonate by machine learning" . | JOURNAL OF MATERIOMICS 7 . 5 (2021) : 1029-1038 . |
| APA | Li, Shuyuan , Zhang, Yunjiang , Hu, Yuxuan , Wang, Bijin , Sun, Shaorui , Yang, Xinwu et al. Predicting metal-organic frameworks as catalysts to fix carbon dioxide to cyclic carbonate by machine learning . | JOURNAL OF MATERIOMICS , 2021 , 7 (5) , 1029-1038 . |
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摘要 ：
<正>工业烟气如烧结和焦炉烟气温度低,组成复杂,主要污染物包括尘、SO_2、NO_x、Hg、CO、H_2S等,具有治理难度大的特点。近年来,焦化、烧结烟气脱硝系统的大量投运,NO_x排放得到有效控制。对于烟气中含有一定量的一氧化碳(CO)气体,仍无有效处理的处理手段,其控制排放问题受到越来越多的关注~([1])。
关键词 ：
催化去除 催化去除 工业烟气 工业烟气 技术探究 技术探究
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| GB/T 7714 | 宋丽云 , 何俊达 , 何洪 et al. 工业烟气中CO、NO_x一体化催化去除技术探究 [C] //第十届中国金属学会青年学术年会暨第四届辽宁青年科学家论坛会议指南 . 2020 . |
| MLA | 宋丽云 et al. "工业烟气中CO、NO_x一体化催化去除技术探究" 第十届中国金属学会青年学术年会暨第四届辽宁青年科学家论坛会议指南 . (2020) . |
| APA | 宋丽云 , 何俊达 , 何洪 , 李坚 . 工业烟气中CO、NO_x一体化催化去除技术探究 第十届中国金属学会青年学术年会暨第四届辽宁青年科学家论坛会议指南 . (2020) . |
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摘要 ：
编号:2019188获奖等级:壹等完成单位:中冶焦耐(大连)工程技术有限公司、北京工业大学、同兴环保科技股份有限公司、宝钢湛江钢铁有限公司完成人:尹华、尹高、何洪、王充、霍延中、郑光明、梁利生、李坚、李旭东、孙刚森、王晓东、韩龙、李良华、申强、孙广明项目简介:炼焦是钢铁、有色等行业支柱产业,2013年以来中国年焦炭产量超过4.5亿t,占世界总产量的70%,其中55%在环京津冀区域。
关键词 ：
京津冀区域 京津冀区域 北京工业大学 北京工业大学 工程技术 工程技术 工艺与装备 工艺与装备 支柱产业 支柱产业 烟气脱硫脱硝 烟气脱硫脱硝 焦炭产量 焦炭产量 环保科技 环保科技
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| GB/T 7714 | 尹华 , 尹高 , 何洪 et al. 焦炉烟气脱硫脱硝工艺与装备技术的开发应用 [J]. | 中国冶金 , 2020 , 30 (6) : 109-109 . |
| MLA | 尹华 et al. "焦炉烟气脱硫脱硝工艺与装备技术的开发应用" . | 中国冶金 30 . 6 (2020) : 109-109 . |
| APA | 尹华 , 尹高 , 何洪 , 王充 , 霍延中 , 郑光明 et al. 焦炉烟气脱硫脱硝工艺与装备技术的开发应用 . | 中国冶金 , 2020 , 30 (6) , 109-109 . |
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摘要 ：
热稳定ALD改性特定晶面CeO2载体负载Pd三效催化剂的制备，属于催化化学与纳米科学领域。包括如下步骤：(1)称取一定量的铈前驱体和氢氧化钠沉淀剂放入烧杯中溶解、反应，然后将混合液转移到自压反应釜中进行水热反应24h。(2)将反应后的混合液洗涤、干燥，研磨成粉末置于马弗炉中，温度为500‑1000℃焙烧4‑6h，得到不同形貌的二氧化铈载体。(3)通过浸渍法将制备的二氧化铈载体和贵金属溶液混合，最后得到负载型贵金属铈基催化剂。(4)通过原子层沉积技术(ALD)涂覆5‑20cycles的Al2O3。本发明所得催化剂具有较高的催化活性和高温热稳定性。
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| GB/T 7714 | 张桂臻 , 李文胜 , 何洪 et al. 热稳定ALD改性特定晶面CeO2载体负载Pd三效催化剂的制备 : CN202010271957.5[P]. | 2020-04-08 . |
| MLA | 张桂臻 et al. "热稳定ALD改性特定晶面CeO2载体负载Pd三效催化剂的制备" : CN202010271957.5. | 2020-04-08 . |
| APA | 张桂臻 , 李文胜 , 何洪 , 徐亚蒙 , 何泽源 . 热稳定ALD改性特定晶面CeO2载体负载Pd三效催化剂的制备 : CN202010271957.5. | 2020-04-08 . |
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摘要 ：
Through silicon via (TSV) is a crucial interconnection structure in 3-D integrated circuits. However, protrusion and intrusion of TSV-Cu caused by annealing could lead to cracking and failure of back-end-of-line (BEOL) layers and TSV interconnects due to mismatch of coefficient of thermal expansion. In this paper, optimizations of TSV interconnects and BEOL layers under annealing process are investigated based on fracture evaluation. Influences of geometrical factors including the TSV geometry dimension, the distance between TSV and BEOL layers, and pitch size of Cu via on energy release rate and J-integral are studied for TSV interconnects and BEOL layers with cracks. Effect of material properties for low k dielectrics on interfacial fracture of BEOL layers and TSV interconnects is also given. Optimized geometrical factors and optimized material properties of low k dielectrics are presented in this paper. Fracture-based method sheds a light on emerging electronic packaging optimization.
关键词 ：
annealing process annealing process BEOL layer BEOL layer energy release rate energy release rate J-integral J-integral TSV interconnect TSV interconnect
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| GB/T 7714 | Qin, F. , Zhang, M. , Dai, Y. et al. Optimization of TSV interconnects and BEOL layers under annealing process through fracture evaluation [J]. | FATIGUE & FRACTURE OF ENGINEERING MATERIALS & STRUCTURES , 2020 , 43 (7) : 1433-1445 . |
| MLA | Qin, F. et al. "Optimization of TSV interconnects and BEOL layers under annealing process through fracture evaluation" . | FATIGUE & FRACTURE OF ENGINEERING MATERIALS & STRUCTURES 43 . 7 (2020) : 1433-1445 . |
| APA | Qin, F. , Zhang, M. , Dai, Y. , Chen, P. , An, T. , He, H. et al. Optimization of TSV interconnects and BEOL layers under annealing process through fracture evaluation . | FATIGUE & FRACTURE OF ENGINEERING MATERIALS & STRUCTURES , 2020 , 43 (7) , 1433-1445 . |
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