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浙江大学学报(工学版) 1980年第1期 24-37页

作者： separate engineering research group dept. of chemical engineering 浙江大学化工系分离工程教研室

用流功解析法测定了在20—50℃,CO平衡分压0.5～1大气压下和不同组成四氯化亚铜铝、甲苯中的溶解度,得到了CO的溶解度和平衡分压,温度和吸收剂组成间的关联武,进行了校核和推算,最大误差为3.35％,平均误差为1.89％。

关键词：氯化亚铜 CO 吸收液吸收剂甲苯芳基甲烷一氧化碳工业气体中溶解度

Variations in Wear Resistance of a Novel Triboalloy Pseudoelastic TiNi Alloy-with Respect to its Pseudoelasticity and Hardness

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Journal of Materials Science & Technology 2001年第1期17卷 45-46页

作者： D.Y.Li and X.Ma dept. of chemical and Materials engineering, University of Alberta, Edmonton, Alberta, Canada T6G 2G6 Univ Alberta Dept Chem & Mat Engn Edmonton AB T6G 2G6 Canada

It has recently been found that TiNt shape memory alloy has another attractive property; high resistance to wear. The wear resistance of this alloy benefits from its pseudoelasticity (PE). It has, however, been noticed that other mechanical properties also affect the wear resistance, especially the hardness. research was conducted to investigate the correlation between the wear resistance and both the PE and hardness. It has been demonstrated that when the PE is high, lower hardness leads to higher wear resistance.

关键词： TiNi Variations in Wear Resistance of a Novel Triboalloy Pseudoelastic TiNi Alloy-with Respect to its Pseudoelasticity and Hardness

Effects of Nitrogen Doping on Microstructure and Photocatalytic Activity of Nanocrystalline TiO_2 Powders

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Journal of Wuhan University of Technology(Materials Science) 2007年第3期22卷 457-461页

作者：杨志远 dept. of Chemistry and chemical engineering Xi’an University of Science and Technology

Nitrogen-doped TiO2 nanocrystalline powders were prepared by hydrolysis of tetrachloride titanium （TiCl4） in a mixed solution of ethanol and ammonium nitrate （NH4NO3） at ambient temperature and atmosphere followed by calcination at 400 ℃ for 2 h in air. FTIR spectra demonstrate that amine group in original gel is eliminated by calcination, and the TiO2 powder is liable to absorb water onto its surface and into its capillary pore. XRD and SEM results show that the average size of nanocrystalline TiO2 particles is no more than 60 nm and with increasing the calcination temperature, the size of particles increases. XPS studies indicate the nitrogen atom enters into the TiO2 lattice and occupies the position of oxygen atom. The nitrogen doping not only depresses the grain growth of TiO2 particles, but also reduces the phase transformation temperature of anatase to futile. The photocatalytic activity of the nitrogen-doped TiO2 powders has been evaluated by experiments of photocatalytic degradation aqueous methylene blue.

关键词： titanium oxide nitrogen doping photocatalytic activity nanocrystalline methylene blue

DEVELOPMENT OF STEP-POOL SEQUENCE AND ITS EFFECTS IN RESISTANCE AND STREAM BED STABILITY

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International Journal of Sediment research 2004年第3期19卷 161-171页

作者： Zhao-Yin WANG, Jiang XU and Changzhi LI Professor, dept. of Hydraulic engineering, Tsinghua University, Beijing & Chairman of Advisory Council, International research and Training Center on Erosion and Sedimentation, 100084, China, Email: zywang@***.M. Phil., Dr. & Post Doctorate research fellow, dept. of Hydraulic engineering, Tsinghua University, Beijing, 100084, China dept. of Hydraulic engineering Tsinghua University Beijing & Chairman of Advisory Council International Research and Training Center on Erosion and Sedimentation 100084 China Dr. & Post Doctorate research fellow Dept. of Hydraulic Engineering Tsinghua University Beijing 100084 China

Experiments were conducted and field investigations were performed to study the development of step-pool sequence and its effects on resistance to the flow and stream bed stability. Step-pool sequence develops in incised channels as a result of streambed erosion, which is compared with sand dunes and armor layer of the role in resistance and streambed protection. The tight interlocking of particles in steps gives them an inherent stability which only extreme floods are likely to disturb. That stability suggests that step-pools are a valid equilibrium form, especially when coupled with their apparent regularity form and their role in satisfying the extreme condition of resistance maximization. The development degree of step-pools, SP, is proportional to the streambed slope. If the incoming sediment load is equal to or more than the sediment-carrying capacity of the flow, there is no bed erosion and thence there are no step-pools. If the flow dept. increases and is over the step-height the resistance caus

关键词： Step-pool Streambed stability Erosion Resistance Rate of energy dissipation Manning’s roughness n

SURFACE MODIFICATION OF CaCO_3 WITH DENDRITIC CARBOXYLIC ACIDS

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Chinese Journal of Polymer Science 2002年第3期20卷 231-235页

作者： Zhao-xia Guo Jian Yu Institute of Polymer Science and engineering Department of chemical engineering Tsinghua University Beijing 100084 China Tsing Hua Univ Dept Chem Engn Inst Polymer Sci & Engn Beijing 100084 Peoples R China

Nanometer calcium carbonate was modified with Frechet type polyether dendrons bearing a COOH group at thefocal point by a wet-coating technique in dichloromethane at room temperature. The interaction between CaCO;and thedendritic modifier was proven by IR and mass spectroscopy of the modified CaCO;after thorough extraction withdichloromethane. The amount of tightly bonded organic modifier was estimated by TGA. It was shown that the amount ofbonded molecules decreased with increasing generation number due to the larger number of branches. Compared tounmodified CaCO;, the modified CaCO;possess different dispersibility in water and in organic solvents.

关键词： calcium carbonate surface modification polyether dendrimer dendritic carboxylic acid

INFLUENCES OF ACID POST-TREATMENT ON THE MORPHOLOGY OF SOAP-FREE P(MMA-EA-MAA)PARTICLES PREPARED BY SEEDED EMULSION POLYMERIZATION

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Chinese Journal of Polymer Science 2005年第5期23卷 479-485页

作者： Kai Kang Cheng-you Kan Yi Du De-shan Liu Department of chemical engineering,School of Materials Science and engineering,Tsinghua University,Beijing 100084,China Tsinghua Univ Dept Chem Engn Sch Mat Sci & Engn Beijing 100084 Peoples R China

Soap-free poly（methyl methacrylate-ethyl acrylate-methacrylic acid） latex particles with narrow size distribution were synthesized by seeded emulsion polymerization, and the porous particles were created by a stepwise alkali/acid treatment method. Effects of acid treatment conditions on the particle morphology were investigated. Results show that one to three pores were formed inside most of particles after post-treatment. At pH 7.0, when the treatment temperature was lower than 70℃, the size of particles and the volume of pores remained almost unchanged, and these two values increased significantly when the temperature was higher than 70℃. Both the particle size and the pore volume decreased with the increase of initial pH value and treatment time in the acid treatment. As the pH was below 4.0 and the treatment time was longer than 180 min, the particles shrunk in size.

关键词： Soap-free emulsion polymerization Particle morphology Porous structure Acid treatment Methyl methacrylate based copolymer.

Boron rings containing planar octa- and enneacoordinate cobalt, iron and nickel metal elements

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Science China Chemistry 2008年第7期51卷 607-613页

作者： LUO Qiong School of Chemistry and chemical engineering, Central South University, Changsha 410083, China School of Chemistry and chemical engineering Central South UniversityChangsha 410083China

For a series of boron rings with planar hyper-coordinate 8th group transition metal atoms, singlet 1FeB8-2, multiplet kFeB9n (n = -1, k = 1; n = 0, k = 2), singlet 1CoB8n(n = -1, +1, +3), multiplet kCoB9n (n = +1, k = 2; n = 0, k = 1) and singlet 1NiB9+, the geometry structures have been optimized to be local minima on corresponding potential hyper-surfaces. The electron structures are discussed by orbital analysis and the aromaticity is predicted by nucleus-independent chemical shifts calculation at both the B3LYP/6-311+G* and BP86/6-311+G* levels of theory, respectively. The results suggest that all these structures with high symmetry planar geometries are stable and have aromatic properties with six π valence electrons.

关键词： planar hyper-coordinate transition metal DFT

FISCHER－TROPSCH　SYNTHESIS　OVER　ZrO＿2－SUPPORTED　Ru－FeBIMETALLIC　AND　THEIR　MONOMETALLIC　CLUSTERS

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Chinese chemical Letters 1995年第5期6卷 441-442页

作者： Zhong Ru GUO Hui Zhen XU (Department of chemical engineering, Zhejiang University of Technology, HangZhou, 310014) Zhejiang Univ Technol Dept Chem Engn Hangzhou 310014 Peoples R China

ZrO2 -supported Ru- Fe bimetallic clusters derived from Ru2 Fe(CO)12 or RuFe2(CO)1 2 displayed much higher activities in the hydrogenation of CO than that of mixed metal clusters or their monometallic clusters derived from Ru3(CO)1 2 and Fe2(CO)9 and that of conventional catalysts prepared from RuCl3 and Fe(NO3)*** of the major object to research the Fischer--Tropsch synthesis over bimetalliccatalysts is the development of new catalyst systems which maximize the more desirablechemical products. In this paper, the effect of precursors for ZrOZ --supported Ru--Febimetallic and their monometallic clusters on the FT synthesis activities was investigated.

关键词： Ru FeBIMETALLIC SUPPORTED ZrO CLUSTERS AND

Proximity Analysis on the Life Distribution Functions of the High-Speed Rotating Machine

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Proximity Analysis on the Life Distribution Functions of the...

The 8th International Conference on Reliability,Maintainability and Safety(ICRMS 2009)

作者： Yuhui Zhou Jiacheng Pei Yi Qian dept.of Reliability engineering research Institute of Physical and chemical engineering Tianjin China dept.of System engineering of engineering Technology Beijing University of Aeronautics and Astronautics Beijing China

＜正＞The exponential distribution is widely used in studies of reliability engineering as a model for life,largely because of its mathematical *** a mechanical product’s life distribution is not in obedience to exponential distribution *** find how an exponential distribution can be applied in the high-speed rotating machine’s life study,which has the characteristic of wear and tear,the proximity analysis among the life distribution functions is studied in this *** study on proximity analysis bridges the parameters between exponential distribution and non exponential distribution（weibull and lognormal distributions）,and then the crucial parameter and its range which affect the proximity of weibull and lognormal distribution to exponential distribution are obtained respectively. According to the life test data,the restriction to use exponential distribution to predict the life of the high-speed rotating machine is found *** outcome improved efficiency during the study on the high-speed rotating machine reliability,so its significance on engineering application is distinct.

关键词： high-speed rotating machine Wear characteristic Exponential distribution Proximity

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甲苯歧化催化剂小型移动床评价装置

大连理工大学学报 1979年第1期 79-92页

作者： Teaching and research group of Petro-chemical engineering 大连工学院化工系基本有机化工教研室

介绍一种近似模拟工业条件的甲苯歧化催化剂评价装置──小型移动床，其催化剂初装量约５公斤，反应器有效容积６７０毫升。小型移动床的总体型式仿造了工业装置的催化剂循环系统，即催化剂连续移动经过同轴式安装的反应器与再生器... 详细信息

介绍一种近似模拟工业条件的甲苯歧化催化剂评价装置──小型移动床，其催化剂初装量约５公斤，反应器有效容积６７０毫升。小型移动床的总体型式仿造了工业装置的催化剂循环系统，即催化剂连续移动经过同轴式安装的反应器与再生器，然后再由空气提升器输送到循环贮斗。甲苯歧化过程未被传质、传热因素所复杂化，故反应器线型尺寸的设计主要考虑了使反应停留时间及其分布状况与工业设备相同与近似。在这种小型装置上，一般经过大约５００小时连续运转，即可得到催化剂的平衡活性、选择性、积炭与再生性能指标，并与工业结果有很好的一致性。此外还可同时得到催化剂机械强度的相对参考指标，以及经过相当长时间的连续运转可大致估计催化剂的寿命。结论认为，小型移动床是较全面而有效的催化剂评价装置。

关键词：移动床催化剂评价装置积炭离子交换器石油产品性质反应器设计催化剂甲苯歧化