In the process of hydrogen storage by MOFs materials, the low thermal conductivity of the materials leads to heat accumulation,which affects the hydrogen storage performance.In order to improve the thermal conductivity of the adsorbent material and take into account its hydrogen storage capacity, numerical simulation was used to analyze the optimal regulation range of the thermal conductivity of the adsorbent material.The results show that when the thermal conductivity of the adsorbent material is in the range of 0~1.2 W/(m·K), the maximum temperature, average temperature and hydrogen absorption capacity of the hydrogen storage tank are obviously improved with the increase of thermal conductivity.When the thermal conductivity of the material is greater than 1.2 W/(m·K), the improvement effect is significantly weakened; when the material thermal conductivity is greater than 2.0 W/(m·K), the improvement effect almost disappears. Therefore, the optimal thermal conductivity of the adsorbent should be controlled at about 1.2 W/(m·K).

This paper used metals (Ni,Cu,Sn,In and Ti) after smelting,forging,grinding,and polishing as substrates of Zn anode for aqueous Zn?ion batteries.In addition,the paper adopted XRD,SEM,in?situ optical microscope,and electrochemical characterization techniques to analyze hydrogen evolution rate in different substrates,Zn deposition/dissolution behaviors,galvanic corrosion,and cycling performance in different substrates.The results show that Sn and In can not only inhibit the side reactions caused by the contact between Zn and substrates，but also have excellent Zn?philic properties. However, the morphology of Zn deposition on Sn substrate surfaces is greatly affected by Sn crystal planes.In contrast,In is more suitable for the substrate of the Zn anode.

WO _x /SBA?15 catalysts with different loading amounts were prepared by wet impregnation method, and the effect of WO _x dispersion on the olefin disproportionation reaction was discussed.The results show that the loading amount affects the dispersion of WO _x on the carrier surface, as well as the catalytic activity.The best catalytic performance of WO _x /SBA?15 can be achieved with 10% loading amount of WO _x .The higher loading amount of WO _x could induce aggregation of WO _x on the SBA?15 surface, and then covering the active sites.The weaving properties of the samples were characterized by physical adsorption,XRD,SEM,and the acidity and acid amount of the samples were characterized by pyridine IR and chemisorption. Reaction evaluation shows that the sample with 10% loading amount of WO _x exhibits the best catalytic activity.The propylene yield of the 10% WO _x /SBA?15 catalyst is up to 50% and the propylene selectivity is nearly 90%.

In order to understand the temperature characteristic of complex modulus,the correlation between the double logarithms of complex modulus and expressions at different temperatures was studied through ten original asphalts produced by two kinds of crude oil as well as these asphalts after RTFOT and PAV.For the first time,through correlation between the slope and intercept of linear fitting correlation,the optimized mathematics formulas between complex modulus and temperature were determined. Mathematics models for different aging stages were established. Mathematics models are simple,accurate,and practical and show universal applicability by comparing measured data at single temperature with predicted data of three asphalts produced by the third crude oil.The data predicted by mathematics model meet the requirements of reproducibility precision of the test method of complex modulus.