Applied Mechanics and Materials Vols. 275-277

Abstract: The interactions between M and nH2O (M= Li+，Mg2+，Ca2+，and Al3+，n=1-8)had been investigated by using density-functional theory(DFT) calculation. We also discuss the interaction between ionic polymer-metal composite with different number of H2O and H2 (M:nH2O:2nH2). The results show that the hydrone could be greatly polarized, increasing the polarization of H2O and making the hydrogen storage properties become stronger. Our result is consistent with the experiment in that Mg2+ adsorbs three hydrones from the benzene ring which composes a stable structure, and the hydrogen storage capacity is up to 10 wt%.

Abstract: A novel metal-organic framework, MnCl₂(BIPS)₂•2CH₃OH•2H₂O (1) were synthesized from MnCl2 and a tetrahedral silicon-cored ligand, Me₂Si(p-C₆H₄-imdazol-1-yl)₂ (BIPS) under the slow diffusion method. The structure was determined by single-crystal X-ray diffraction. Complex 1 is a 2D sheet structure constructed from 1D chains with 34-atom metallamacrocycles.

Abstract: During the last 20 years, interest in the closed adsorption heat pump and refrigeration systems has increased steadily. In this paper, consideration is given to aspects of adsorption refrigeration in terms of existing materials used in adsorption refrigeration, heat transfer characteristics of materials, and cost of materials and manufacturing. The heat and mass transfer play very important roles in improving the cycle performances and their optimization is one of the technological challenges in developing adsorptionrefrigeration systems. In order to optimize an adsorber it is essential to control unconsolidated adsorbers; coated adsorbers and consolidated adsorbers. The paper is a general review of adsorption refrigeration technology and provides information of value to those involved with heat pump and refrigeration systems technology.

Abstract: The electrolyte optimum composition consists of 1mol/L LiTFSI in the [EMIM]⁺[TFSI]^- mixed with EC and DMC in weight ratio of 60:20:20. The LiFePO₄/Li cell using 1 mol/L LiTFSI/([EMIM]⁺[TFSI]^-/EC/DMC) as electrolyte show that the first coulomb efficiency was 90% and the first discharge capacity was 168mAh g^-1. The 15th reversible capacities were maintain 157mAh g^-1 at 0.2C. Compared with traditional organic electrolyte and pure IL electrolyte, IL-based mixed electrolyte have good coulomb efficiencies and higher charge and discharge performances. The lithium transference number of IL-based mixed electrolyte at room temperature are 0.59. Thermal stability of IL-based mixed electrolyte higher than traditional organic electrolyte, and show almost non-flammability by the burning tests.

Abstract: A mathematical model for facilitated transport in asymmetric membranes with fixed site carriers was derived by assuming concentration fluctuation and an analogy between electron transport in resistor-capacitor circuit and mass transport in an asymmetric membrane of facilitated transport. In order to examine the validity of the model, bovine serum albumin fixed membranes were fabricated and experiment of facilitated transport of bilirubin was carried out in diffusion cell. The agreement between the theoretical and experimental results is exceptional.

Abstract: Lithium ion second battery has been grabbing an increasingly larger market share in recent years, and more lithium ion battery uses aluminum laminate foil to separate the cell from the environment. The adhesion strength of the Al layer and polypropylene layer will affect the battery quality, if the adhesion strength is so little that it should lead the battery delamiation in the process of heat sealing, and some of the aluminum laminate will corrosion in a short time and lead the battery scrap quickly.

Abstract: The oxygen permeation fluxes of Ba0.5Sr0.5Co0.8Fe0.2O5+(BSCF) membranes coated by RBaCo2O5+ (R= Pr, Nd, Sm, Gd) thin layer were investigated. The oxygen permeation fluxes of BSCF membranes with RBaCo2O5+ (R112)R112 coating layer can be enhanced remarkably. And it is found that the reaction of R112 with BSCF also have effect on the oxygen permeation fluxes. Impurity formed by the reaction of Pr112 with BSCF block oxygen permeation. While NdBaCo2O5+ and SmBaCo2O5+, especially GdBaCo2O5+ have no serious reaction with BSCF, they are desirable materials for coating layer of oxygen permeation membranes.

Abstract: A new L-amino acid tailed porphyrins and its Zinc(Ⅱ) complex were synthesized by L-amino acid and 5-(2-ethoylphenyl)-10, 15,20-triphenylporphyrin.FAB-MS, UV-vis, IR element analysis and chemical analysis were used to determine the structures of the porphyrin and zinc(Ⅱ) complex.

Abstract: Toluene is one of the major pollutants of indoor air pollution. Acrylonitrile-vinylidene chloride (AN-VDC) copolymer fibers containing activated carbon were wet-spun; and loaded with Cu-Mn oxide complex. The morphology and performance of the fiber was characterized using scanning electronic microscope (SEM), X-ray diffraction (XRD). The results show that, Cu-Mn oxide complex is loaded on the surface of the fiber. Cu-Mn oxide complex loaded fibers have a higher removal rate to toluene at room temperature. When the molar ratio of copper manganese reaches 1:5, the removal rate of the fiber is the highest among all, which is up to 81.77% The new material for toluene in indoor air purification has a good theoretical and practical value.

Abstract: In roughage, ten trace elements as Pb, Se, Mn, Se, Zn，Sb, Hg, Sn, Ca, Mg were detected by ICP-AES. Method of high pressure nitrifying pot is also selected to nitrify roughage. The relative standard deviation of measurement was less than 2.60%. The results accord with the demands of analysis trace elements. The experiment proved that roughage contained rich useful trace elements, which was green food with high nutrition.