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低温绝热气瓶普遍采用高真空多层绝热,其夹层真空随着时间会缓慢变坏,氢气是造成真空下降的主要原因,而现在的吸氢剂氧化钯(PdO)价格昂贵单位吸氢量较小。因此本文搭建实验平台,研究由氧化铜(CuO)和5 A分子筛(5 A)组成的新型廉价复合吸氢剂的吸附性能。研究结果表明:复合吸氢剂的最优质量比例为1∶6.2,测定了在此比例下的复合吸氢剂的吸附等温线,根据BDDT理论,该等温线属于第Ⅰ类吸附等温线,并用Langmuir等温式进行了分析,得出饱和吸附量为560.97 mL(stp)/g(CuO),吸附系数为2.69。
Low-temperature insulated cylinders commonly use high-vacuum multi-layer insulation, the interlayer of the vacuum will deteriorate slowly over time, hydrogen is the main reason for the vacuum drop, and now the hydrogen-absorbing agent palladium oxide (PdO) small. Therefore, an experimental platform was set up to study the adsorption performance of a new inexpensive complex hydrogen-absorbing agent composed of copper oxide (CuO) and 5 A molecular sieve (5 A). The results show that the optimum mass ratio of the composite hydrogen-absorbing agent is 1: 6.2, the adsorption isotherm of the composite hydrogen-absorbing agent at this ratio is determined. According to the BDDT theory, the isotherm belongs to the type Ⅰ adsorption isotherm Langmuir isotherm. The results showed that the saturated adsorption capacity was 560.97 mL / (CuO) and the adsorption coefficient was 2.69.