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A Novel Nano-sized Catalyst CeO2-CuO/Hollow ZSM-5 for NOx Reduction with NH3

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Chemical Research in Chinese Universities 2018年第4期34卷 661-664页

作者： YI Ting LI Jingwei ZHANG Yibo yang xiangguang State Key Laboratory of Rare Earth Resource Utilization Changchun Institute of Applied Chemistry Chinese Academy of Sciences Changchun 130022 P. R. China University of Chinese Academy of Sciences Beijing 100049 P. R. China Jilin Province Key Laboratory of Green Chemistry and Process Changchun Institute of Applied Chemistry Chinese Academy of Sciences Changchun 130022 P. R. China Institute of Carbon Materials Science Shanxi Datong University Datong 037009 P. R. China

Hollow-ZSM-5 was synthesized by a traditional hydrothermal method without alcohol, and a novel nano-sized Ce-Cu/hollow ZSM-5 sample was prepared by conventional incipient wetness impreganation. The catalysts were characterized by TEM, SEM, XRD, NMR and N2 adsorption-desorption. The results indicate that the hollow-ZSM-5 has a good MFI structure with large surface area. The synthesized CeO2-CuO/hollow ZSM-5 showed an excellent catalytic activity for NOx conversion（90% NOx conversion were obtained） in the temperature range of 340-550℃ under GHSV=480000 mL. g^-1.h^-1 due to its appropriate redox ability and acidity.

关键词： Hollow-ZSM-5 Selective catalytic reduction Hydrothermal method NOx conversion

Layered La-Ba-Cu mixed oxides with perovskite structure as catalyst for NO reduction by CO

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Chinese Science Bulletin 1998年第1期43卷 44-47页

作者： Yu Liu xiangguang yang Zhen Zhao Yue Wu Chinese Acad Sci Changchun Inst Appl Chem Changchun 130022 Peoples R China

The mixed oxides, including LaBa\-2Cu\-3O\-7, LaBaCu\-2O\-5, La\-4BaCu\-5O 12 with perovskite structure, were prepared. The catalysts were characterized by means of chemical analysis, XRD, H\-2_TPR. It was found that their structures were layered ABO\-3 perovskite structure and they were the active catalysts for the NO reduction by CO. The existance of Cu 3+ is an important factor to give the catalysts a high activity for the NO reduction by CO.

关键词： Cu_based mixed oxide layered ABO\-3 structure NO reduction by CO.

STUDY OF CH_4 AND CO OXIDATION FROM ELECTROCHEMICAL METHOD

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Chinese Science Bulletin 2006年第3期51卷 374-376页

作者： ZHU Junjiang yang xiangguang XU Xuelian WEI Kemei National Research Center of Chemical Fertilizer Catalysts Fuzhou University Fuzhou 350002 China Changchun Institute of Applied Chemistry Chinese Academy of Sciences Changchun 130022 China College of Chemistry & Chemical Engineering Fuzhou University Fuzhou 350002 China

CH4 and CO oxidation reaction on perovskite-like oxides La2-xSrxMO4 (0.0=x=1.0; M = Cu, Ni) was investigated from cyclic voltammetry method, finding that for suprafacial CO oxidation reaction, the catalyst activity has a close correlation to the area of redox peaks measured in the cyclic voltammetry, the larger the peak area is, the higher the activity will be, while for interfacial CH4 oxidation reaction, the activity depends mainly on the difference in redox potentials (?E), and the smaller the difference in redox potentials is, the higher the activity will be.

关键词：甲烷一氧化碳氧化反应电化学法钙钛矿氧化物催化剂

Sinter-resistant and high-efficient Pt/CeO2/NiAl2O4/Al2O3@SiO2 model catalysts with “composite energy traps”

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Science China Chemistry 2020年第4期63卷 519-525页

作者： Jingwei Li Kai Li Liwei Sun Zeshu Zhang Zhijian Wu Yibo Zhang xiangguang yang State Key Laboratory of Rare Earth Resource Utilization Changchun Institute of Applied ChemistryChinese Academy of SciencesChangchun 130022China Institute of Carbon Materials Science Shanxi Datong UniversityDatong 037009China Jilin Provincial Key Laboratory of Green Chemistry and Process Changchun Institute of Applied ChemistryChangchun 130022China

The stability of nanosized catalysts at high temperature is still a challenging topic and is a crucial criterion to evaluate their suitability for industrial use. Currently, the strategy to improve the high-temperature stability of nano-sized catalysts is to restrict the migration of particles on the surface, which, however, lacks theoretical knowledge and directions. Herein, we reported a new approach that can effectively inhibit the migration and agglomeration of supported nanoparticles by fabrication of a model catalyst Pt/CeO2/NiAl2O4/Al2O3@SiO2. This catalyst is highly stable with the microstructure unchanged even after being aged at 1000 °C. Density functional theory calculations indicate that two types of confinement effects exist in the catalyst and their mechanisms were well explained from the viewpoint of "energy traps" which can also be applied to other supported catalysts.

关键词： stability of nanosized catalysts the migration and agglomeration of supported nanoparticles energy trap two types of confinement effects

Enhanced hydrothermal stability of Cu-SAPO-34 with an ultrathin TiO_(2)coated by atomic layer deposition for NH3-SCR

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Science China(Technological Sciences) 2022年第10期65卷 2325-2336页

作者： TIAN HeYuan XI WenChang ZHANG YiBo SUN LiWei LIU Peng WU Fan yang Guo GUO Feng yang xiangguang State Key Laboratory of Rare Earth Resource Utilization Jilin Province Key Laboratory of Green Chemistry and ProcessChangchun Institute of Applied ChemistryChinese Academy of SciencesChangchun 130022China School of Applied Chemistry and Engineering University of Science and Technology of ChinaHefei 230026China College of Materials Sciences and Engineering Henan Institute of TechnologyXinxiang 453000China Ganjiang Innovation Academy Chinese Academy of SciencesGanjiang 341000China

Reducing pollution and carbon emissions is an important step toward peaking CO_(2)emissions before 2030 and reaching carbon neutrality before 2060,and heavy diesel vehicle pollution,particularly nitrogen oxides(NOx)emissions,is an essential ***-34 is a CHA-type small pore molecular sieve with excellent ammonia(NH_(3))selective catalytic reduction(NH_(3)-SCR)catalytic activity,but it cannot be stored or applied because of severe degradation caused by low-temperature hydrothermal *** improve the hydrothermal stability,TiO_(2)was coated on the surface of Cu-SAPO-34 by the ALD method to form a uniform *** this ultrathin TiO_(2)nanolayer has little effect on NH_(3)-SCR catalytic activity of Cu-SAPO-34,the resistance to low-temperature hydrothermal aging in liquid water at 80℃for 24 h has greatly been improved.A study carried out by SEM,XRD,NH_(3)-TPD,and EPR,showed that the ultra-thin TiO_(2)nanolayers were covered uniformly and hydrolysis of frameworks silicon and the migration of Cu^(2+)was *** method has some implications for the future preparation of highly robust Cu-SAPO-34 catalysts for industrial *** research could inspire the development of highly robust CuSAPO-34 catalysts to control the NOx emissions from diesel engines.

关键词： selective catalytic reduction chabazite zeolite catalyst Cu-SAPO-34 low-temperature hydrothermal stability atomic layer deposition

A novel PdNi/Al_2O_3 catalyst prepared by galvanic deposition for low temperature methane combustion

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Journal of Energy Chemistry 2013年第4期22卷 610-616页

作者： Xiqiang Pan Yibo Zhang Zhenzhen Miao xiangguang yang State Key Laboratory of Rare Earth Resource Utilization Changchun Institute of Applied ChemistryChinese Academy of Sciences Laboratory of Green Chemistry and Process Changchun Institute of Applied ChemistryChinese Academy of Sciences University of Chinese Academy of Sciences

Galvanic deposition method was used to prepare the Pd/Ni-Al2O3-GD catalyst for the combustion of methane under lean conditions. The new catalyst and compared catalysts （Pd/Al2O3-IW, Pd-Ni/Al2O3-IW, Pd/Ni-Al2O3-IW） prepared by incipient wetness impregnation were characterized by N2-physisorption, XRD and TEM to clarify particle size and size distribution of palladium species. Combined O2-TPD and XPS results with the catalytic data, it shows that the surface palladium species with low valence exhibits better combustion performance due to their stronger interaction with support. The results indicate that the galvanic deposition method is an effective route to prepare efficient catalyst for methane combustion, and it also provides useful information for improving the present commercial catalyst.

关键词： methane catalytic combustion palladium Pd/Al2O3 galvanic replace reaction

One-Pot Three-Dimensional Printing Robust Self-Supporting MnO_(x)/Cu-SSZ-13 Zeolite Monolithic Catalysts for NH_(3)-SCR

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CCS Chemistry 2022年第5期4卷 1708-1719页

作者： Yingzhen Wei Mengyang Chen Xiaoyu Ren Qifei Wang Jinfeng Han Wenzheng Wu xiangguang yang Shuang Wang Jihong Yu State Key Laboratory of Inorganic Synthesis and Preparative Chemistry College of ChemistryJilin UniversityChangchun 130012 International Center of Future Science Jilin UniversityChangchun 130012 School of Mechanical and Aerospace Engineering Jilin UniversityChangchun 130025 State Key Laboratory of Rare Earth Resource Utilization Jilin Province Key Laboratory of Green Chemistry and ProcessChangchun Institute of Applied ChemistryChinese Academy of SciencesChangchun 130022 Henan Province Function-Oriented Porous Materials Key Laboratory College of Chemistry and Chemical EngineeringLuoyang Normal UniversityLuoyang 471934

Honeycomb cordierite coated with Cu-SSZ-13 zeolite is widely used for the selective catalytic reduction of NO_(x) with NH_(3)(NH_(3)-SCR)to reduce pollutants from vehicle ***,conventional honeycomb catalysts fabricated via coating techniques are limited by low zeolite loadings,loss of the deposited zeolites,and complicated preparation ***,a facile,one-step three-dimensional(3D)printing strategy is developed to construct MnO_(x)/Cu-SSZ-13 monolithic catalysts with excellent catalytic performance for NH_(3)-***-containing halloysite nanotubes(Fe-HNTs)are introduced as printing ink additives to ensure mechanical stability and modulate the NH_(3)-SCR performance of monolithic catalysts in high temperature *** situ incorporation of Mn into the Cu-SSZ-13 zeolite monoliths during the 3D printing process boosts the mechanical strength of the monolithic structures from 2.54 MPa to 4.33 MPa as well as broadens the temperature window(165-550℃)of the catalysts for NH_(3)-SCR with NO_(x) conversion of above 80%.Such robust multicomponent-integrated 3D-printed selfsupporting catalysts not only possess high zeolite loading and excellent catalytic activity,but also avoid complicated manufacturing processes,which contrasts with conventional honeycomb catalysts fabricated by extrusion coupled with coating.

关键词： 3D printing metal-doped Cu-SSZ-13 zeolites NH_(3)-SCR monolithic catalysts mechanical strength

Studies on Oxidative Coupling of Methane Catalysed by Li-Ce-Sr Oxides

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Chemical Journal of Chinese Universities 1988年第3期 52-61页

作者： Bi Yingli, Zhen Kaiji, Sun Chengwen , yang xiangguang ao yaan (Department of Chemistry, Jilin University, Changchun)

The conditions for catalyst preparation and coupling reaction of methane were investigated. The experimental results showed that under the catalysts the selectivity for C2 formation may reach 98.5% and the yield 28.2% (the average within the first 30 minutes). A stale selectivity and yield for C2 formation obtained after reaction for 2h were 48.4% and 20.6%, respectively. Some kinetic parameters were also determined, including activation energy and the partial pressure dependence of the catalytic reaction rates. Finally a preliminary explanation of the reaction mechanism is suggested.

关键词： Oxidative coupling Li-Ce-SrO catalyst

La_2CuO_4的制备及其对催化消除NO活性的影响

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物理化学学报 1999年第6期15卷 506-511页

作者：刘钰杨向光刘玉敏吴越中国科学院长春应用化学研究所长春130022

用四种制备方法：柠檬酸络合爆炸法，聚乙二醇凝胶法，聚丙烯酰胺凝胶法，DTPA络合法合成了La2CuO4.比较了四种方法的特点及其对La2CuO4结构的影响，并对所得La2CuO4在NO-CO反应中的催化活性的影响进行了研究．结果发现聚乙二醇凝胶法和... 详细信息

用四种制备方法：柠檬酸络合爆炸法，聚乙二醇凝胶法，聚丙烯酰胺凝胶法，DTPA络合法合成了La2CuO4.比较了四种方法的特点及其对La2CuO4结构的影响，并对所得La2CuO4在NO-CO反应中的催化活性的影响进行了研究．结果发现聚乙二醇凝胶法和DTPA络合法有利于形成好的晶形，而聚乙二醇凝胶法和聚丙烯酰胺凝胶法对NO-CO反应有较好的活性。

关键词：镧铜消除催化剂氮氧化物一氧化氮