检索结果-南通市图书馆

维普期刊数据库

Hierarchically Macroporous Zeolite ZSM-5 Microspheres for Efficient Catalysis

在线全文

学校读者我要写书评

暂无评论

Chemical Research in Chinese Universities 2024年第4期40卷 704-711页

作者： ZHENG Mingdan CHEN Ya LIU Zhan LYU Jiamin YE Bo suN Ming-Hui CHEN Li-Hua su bao-lian State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan430070P.R.China Laboratory of Inorganic Materials Chemistry(CMI) University of Namur5000NamurWalloniaBelgium

Hollow zeolite microspheres have recently attracted much attention for their applications in catalysis,microreactors and ***,we present hierarchically structured zeolite ZSM-5 microspheres with unique,abundant macropores that allow more efficient use for *** hierarchically macroporous zeolite ZSM-5 microspheres are synthesized under the assistance of water/oil emulsions and using polystyrene nanospheres as *** zeolite microsphere is assembled by uniform hollow zeolite *** large inner cavities and thin zeolite shells lead to smaller diffusion channel and higher improved accessibility to active sites,contributing to high catalytic performance in the catalytic conversion of benzyl alcohol in *** novel zeolite microspheres with impressive performance will be applied to numerous other industrial catalytic reactions.

关键词： Hierarchically porous structure Hollow structure Microsphere Zeolite ZSM-5 Alkylation

EFFECTS OF RARE EARTH OXIDES ON PERFORMANCES OF Ni/Al2O3 CATALYSTS FOR METHANE STEAM REFORMING REACTION

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Energy Chemistry 1995年第2期 186-201页

作者： su bao-lian* GUO Shen-DuChengdu Institute of Organic Chemistry, Acaderma Siiaca Chengdu, Sichuan 610015

The Catalytic performances for methane steam reforming reaction ofNi/AlO（commercial）, Ni/AlO（developed surface ）and Ni/AlO-RO（R israre earth oxide） Catalysts were investigated by means of X-ray diffraction,TG, SEM/ X-ray analysis, pulse gas chromatography,BET and Mercuryporsiniter techniques. The distribution of rear earth oxides on the supports,themetal-support （additives） interaction and the influence of rare earth oxideadditives on the dispersion of active components,catulytic activities,variationof nickel crystallites size,CO chemisorption,formation of NiAlOas well asthe reducibility of the catalysts were *** presence of rare earthoxides in the Ni/AlO（developed surface） results in great improvement ofstubility through suppressing the growth of Ni crystallites,the oxidation of themetallic Ni and the formation of NiAlO. The effect of heavy rare earth oxidesis more distinct than that of the light *** metal support interaction（SMSI） exists in Ni/AlO- R

关键词： rare earth oxides Ni/Al2O3catalysts methane steam reforming

EFFECTS OF RARE EARTH OXIDE ADDITIVES ON STABILITY OF Ni/Al2O3 CATALYSTS FOR METHANE STEAM REFORMING REACTION

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Journal of Energy Chemistry 1995年第3期 295-301页

作者： su bao-lian GUO Shen-DuChengdu Institute of Organic Chemistry, Academia Sinica Chengdu. Sichuan 610015

The stability and the high temperature steam resistance of Ni/Al2O3 catalysis added with rare earth oxides were investigated. It was found that the addition of rare earth oxides resulted in great improvement in the stability and high temperature steam resistance of the catalysts through suppressing the growth of Ni crystallite, the oxidation of metal Ni and the formation of NiAl2O4.

关键词： rare earth oxides Ni/Al2O3 catalysts methane steam reforming

SAPO-34和MeAPSO-34在氯甲烷转化制烯烃中的应用

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

石油学报（石油加工） 2006年第B10期22卷 110-112页

作者：魏迎旭张大治许磊何艳丽 su bao-lian 刘中民中国科学院大连化学物理研究所应用催化研究室辽宁大连116023 Laboratory de chemie des Materiaux Inorganique （CMI） University of Namur B-5000 Namur Belgium

合成了具有CHA结构的SAPO-34和具有金属杂原子的MeAPSO-34（Me=Mn，Co和Mg）分子筛。采用XRD、XRF和NMR等方法表征了杂原子引入对合成产物的晶体结构、元素组成和骨架配位的影响。合成的分子筛除去模板剂后用于氯甲烷转化制备低碳烯烃... 详细信息

合成了具有CHA结构的SAPO-34和具有金属杂原子的MeAPSO-34（Me=Mn，Co和Mg）分子筛。采用XRD、XRF和NMR等方法表征了杂原子引入对合成产物的晶体结构、元素组成和骨架配位的影响。合成的分子筛除去模板剂后用于氯甲烷转化制备低碳烯烃的反应，结果发现，杂原子引入的修饰作用对反应的稳定性和产物分布具有重要影响。

关键词： SAPO-34 杂原子引入氯甲烷转化低碳烯烃

清热复脉汤联合美托洛尔治疗室性期前收缩的疗效观察

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

承德医学院学报 2014年第5期31卷 384-386页

作者：陈晖苏宝连漳州市中医院福建漳州363000

目的:观察清热复脉汤联合美托洛尔对痰热型室性期前收缩(VPC)的疗效。方法:60例痰热型VPC患者随机分为治疗组和对照组,每组30例患者,对照组患者给予琥珀酸美托洛尔片口服,治疗组患者在对照组治疗的基础上给予清热复脉汤,每日一剂口服,... 详细信息

目的:观察清热复脉汤联合美托洛尔对痰热型室性期前收缩(VPC)的疗效。方法:60例痰热型VPC患者随机分为治疗组和对照组,每组30例患者,对照组患者给予琥珀酸美托洛尔片口服,治疗组患者在对照组治疗的基础上给予清热复脉汤,每日一剂口服,两组的疗程均为3周。比较两组患者用药前后的疗效和VPC次数。结果:治疗后治疗组的临床总有效率和中医症候总有效率分别为80.0%、83.3%,均明显高于对照组(P<0.05)。治疗后两组患者VPC次数均明显减少,但治疗组的改善效果优于对照组(P<0.05)。结论:清热复脉汤联合美托洛尔对痰热型VPC有较好的疗效,并能显著改善患者的中医临床症候。

关键词：清热复脉汤室性期前收缩疗效

维普期刊数据库

微波辅助合成直接蓝染料囊包的介结构氧化硅材料

在线全文

学校读者我要写书评

暂无评论

石油学报（石油加工） 2008年第B10期24卷 355-359页

作者：任铁真袁忠勇苏宝连河北工业大学化工学院天津300130 南开大学化学学院天津300071 比利时那慕尔大学化学系那慕尔B-5000

用非离子表面活性剂苄泽56在酸性溶液中微波辅助合成方法合成出直接蓝71染料囊包的介结构氧化硅材料，采用XRD、N2吸附分析、电子显微镜、FT-IR、13CNMR、UV—vis，和TG-DSC手段表征它们的结构和性质。在这些直接蓝71染料囊包的介结构... 详细信息

用非离子表面活性剂苄泽56在酸性溶液中微波辅助合成方法合成出直接蓝71染料囊包的介结构氧化硅材料，采用XRD、N2吸附分析、电子显微镜、FT-IR、13CNMR、UV—vis，和TG-DSC手段表征它们的结构和性质。在这些直接蓝71染料囊包的介结构氧化硅材料中观察到紫外光谱红移现象。

关键词：直接蓝71染料介结构氧化硅微波合成

介孔-大孔结构无定形硅-铝催化剂的核磁共振研究

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

石油学报（石油加工） 2006年第B10期22卷 316-320页

作者：任铁真袁忠勇苏宝连斯德哥尔摩大学阿列纽斯实验室结构化学部瑞典斯德哥尔摩S10691 南开大学新催化材料科学研究所天津300071 那慕尔大学无机材料化学实验室比利时那慕尔B5000

合成了具有介孔-大孔双模型分级结构的无定形硅铝催化剂，利用硅和铝核的固体魔角核磁共振谱，考察了合成样品中硅和铝结构上的原子特征。

关键词：硅-铝氧化物分级结构介孔固体核磁共振

Quantum public-key crypto via EPR pairs

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Science China(Physics,Mechanics & Astronomy) 2025年第1期Mechanics & Astronomy) .卷 58-63页

作者： Xiang-Qun Fu Hong-Wei Li Jian-Hong Shi Tan Li Wan-su bao Henan Key Laboratory of Quantum Information and Cryptography Information Engineering University Synergetic Innovation Center of Quantum Information and Quantum Physics University of Science and Technology of China

With the development of quantum computing technology, quantum public-key cryptography is gradually becoming an alternative to the existing classical public-key cryptography. This paper designs a quantum trapdoor one-way function via EPR pairs and quantum measurements. Based on this, a new quantum public-key cryptosystem is presented, which offers forward security,and can resist the chosen-plaintext attack and chosen-ciphertext attack. Compared with the existing quantum public-key cryptos,eavesdropping can be automatically detected in this new quantum public-key cryptosystem under a necessary condition, which is also detailed in the paper.

关键词： quantum public-key crypto trapdoor one-way function EPR pairs

A surface engineering strategy for the stabilization of zinc metal anodes with montmorillonite layers toward long-life rechargeable aqueous zinc ion batteries

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Journal of Energy Chemistry 2025年第1期100卷 94-105页

作者： Wenbo Wang Ruifeng Xu Xu Zhang Peiyu Wang bao Yang Bingjun Yang Juan Yang Kailimai su Pengjun Ma Yanan Deng Xianfeng Fan Wanjun Chen Key Laboratory for Electronic Materials College of Electrical Engineering Northwest Minzu University Resource Chemistry and Energy Materials Research Center State Key Laboratory of Solid Lubrication Lanzhou Institute of Chemical Physics Chinese Academy of Sciences University of Chinese Academy of Sciences Institute for Materials and Processes School of Engineering University of Edinburgh

Rechargeable aqueous zinc-ion batteries （AZIBs） exhibit appreciable potential in the domain of electrochemical energy ***,there are serious challenges for AZIBs,for instance zinc dendrite growth,hydrogen evolution reaction （HER）,and corrosion side ***,we propose a surface engineering modification strategy for coating the montmorillonite （MMT） layer onto the surface of the Zn anode to tackle these issues,thereby achieving high cycling stability for rechargeable *** results reveal that the MMT layer on the surface of the Zn anode is able to provide ordered zincophilic channels for zinc ions migration,facilitating the reaction kinetics of zinc *** functional theory（DFT） calculations and water contact angle （CA） tests prove that MMT@Zn anode exhibits superior adsorption capacity for Zn2+and better hydrophobicity than the bare Zn anode,thereby achieving excellent cycling ***,the MMT@Zn||MMT@Zn symmetric cell holds the stable cycling over 5600 h at 0.5 mA cm-2and 0.125 m A h cm-2,even exceeding 1800 h long cycling under harsh conditions of 5 m A cm-2and 1.25 m A h *** MMT@Zn||V2O5full cell reaches over 3000 cycles at 2 A g-1with excellent rate ***,this surface engineering modification strategy for enhancing the electrochemical performance of AZIBs represents a promising application.

关键词： surface engineering strategy Montmorillonite layer Protection mechanism of Zn anode Cycling stability Aqueous zinc ion batteries