液态有机物储氢技术属于化学储氢的范畴,是近年来快速发展的一种氢能储运技术.国外对此项技术的研究和报道较多,而国内的研究才刚刚起步.对液态有机物储氢技术的原理进行介绍,并从储氢介质、脱氢模式和脱氢催化剂几个方面展开.通过对以上几个方面的介绍,旨在推动化学储氢技术特别是液态有机物储氢技术的进展.
介绍生物净化技术净化挥发性有机气体的装置和影响因素方面的进展,并探讨生物净化技术的发展方向。
A biotrickling filter packed with plastic Pall ring and columned activated carbon has been developed,and the removal efficiency(RE)and elimination capacity(EC)of low concentrated benzene in marine cabins were investigated.Several operational parameters including performance and height of packing materials,benzene inlet concentration,gas residence time,which influence the removal efficiency,are tested experimentally.In the operated BTF Ⅰ,Ⅱ,Ⅲ,the maximum elimination capacities for benzene reached 36.97,79.41,185.42 mg/(L·h) respectively.The results showed that compound packing materials has higher biodegradation efficiency than that of above two single packing materials.
The paper introduced micro-reactor and its characteristics of temperature,mass transfer,safety,enlargements and applied limitations,and summarized the research and application in chemical reaction,micro reactor nanoparticles preparation and basic research.The development direction of micro-reactor technology was prospected.
This paper studies the reaction activity,moisture resistance and the effects of space velocity for two kinds of copper manganese mixed type catalysts low temperature catalytic combustion VOCs.The results reveal:under 260 ℃ all kinds of VOCs can be completely oxidized to become CO2 and H2O over the two catalysts.Catalytic activity and moisture resistance of No.1 catalysts are better than No.2 catalysts.The two catalysts was characterized by BET,XRD,XPS,SEM,and found that the catalysts are amorphous state and have highly specific surface areas,the surface apertures distribute special abundant,these factors assist high low temperature activity of the two catalysts.Through XPS analysis found copper are mainly+2 valency and manganese is mainly+4 valency.
In the paper the representation substances of CO,H2,benzene,normal heptane and mixed benzene-heptane were selected for studying the catalytic performance of the two new hopcalite catalysts. And the catalytic decomposition of refrigerants (R12,R22,R134a) were studied over the catalysts. The study results reveal: the catalytic activity and moisture resistance of No.1 catalyst are higher than No.2 catalyst. Under 260℃ all kinds of harmful gases can be removed over the two catalysts. And the exist of benzene promotes the removal of normal heptane,but the exist of heptane inhibits benzene’s removal. At 315℃,the decomposition rate of R12,R22 and R134a are higher over No.1 catalyst than over No.2 catalyst. At 260℃,the percent decomposition of R12 decreases to 18.7% and 1% respectively over No.1 and No.2 catalyst,R22 decomposition changes very little and the percent decomposition of R134a is only 2%.
In the report the representation substances of CO,H2,benzene,normal heptane and mixed benzene-heptane were selected for studying the catalytic performance of the two Cu-Mn mixed type catalysts.The study results reveal:under 260 ℃ all above gases can be completely oxidized to become CO2 and H2O over the two catalysts.Catalytic activity and moisture resistance of No.1 catalysts are better than No.2 catalysts.The exist of benzene promotes the removal of normal heptane,but the exist of heptane inhibits benzene total oxidation.Catalytic activity more high,promoting or inhibiting effects between benzene and normal heptane are more obviously.
Latest researches in hopcalite catalyst for carbon monoxide oxidation at low temperature were reviewed,including influential factors for the catalytic activity,catalytic mechanism and causes for deactivation of the catalyst.