Sorption properties of novel-fashioned low-cost hydrogen getters in a high-vacuum-multilayer insulation structure

doi:10.1016/j.vacuum.2021.110452

CORC > 兰州理工大学 > 兰州理工大学 > 土木工程学院

	Sorption properties of novel-fashioned low-cost hydrogen getters in a high-vacuum-multilayer insulation structure
	Yu, Yang 1,2; Zhu, Ming 1; Huang, Qianghua 1; Huang, Liang 1; Dong, Chao 2; Chen, Shuping 2
刊名	VACUUM
	2021-10
卷号	192
关键词	High-vacuum-multilayer-insulation structure Hydrogen getter Cumulative sorption capacity X-ray powder diffractogram
ISSN号	0042-207X
DOI	10.1016/j.vacuum.2021.110452
英文摘要	In a high-vacuum-multilayer insulation structure (HVMLIS), H-2 is released into the vacuum jacket by manufactured materials, resulting in the deterioration of the insulation vacuum. Palladium oxide (PdO), which is expensive, is typically used as an H-2 getter in HVMLIS. However, PdO generates sparks by vigorously reacting with H-2, which are a potential threat to HVMLIS. Therefore, in this work, silver-exchanged zeolite is optimised to obtain an inexpensive and safe Ag-Z getter and a silver molecular sieve (SMS) together with a low-temperature active material getter (AMG). Moreover, an experimental platform was designed to test the H-2 sorption properties of the three getters and compare them with traditional PdO. The experiment revealed that the cumulative sorption capacities of PdO, Ag-Z, SMS and AMG were 184.8, 63.1, 124.9 and 5.28 mL/g, respectively. However, the costs of SMS, Ag-Z and AMG were only similar to 7.37%, 5.08% and 6.13% of the cost of PdO, respectively, indicating that SMS is a promising alternative to PdO, which is expensive. Simultaneously, the microstructure of the H-2 getters was analysed via X-ray powder diffraction. Further, PdH0.706 and Pd2H1.5 were obtained in addition to Pd, after H-2 was absorbed by PdO. Ag+ was reduced to Ag in SMS, and Cu8O was produced by the reaction of CuO in AMG. These findings provide a basis for the subsequent optimisation of the H-2 getters.
WOS研究方向	Materials Science ; Physics
语种	英语
出版者	PERGAMON-ELSEVIER SCIENCE LTD
WOS记录号	WOS:000696612500004
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/148754]
专题	土木工程学院石油化工学院
作者单位	1.China Special Equipment Inspect & Res Inst, Beijing 100029, Peoples R China; 2.Lanzhou Univ Technol, Coll Petr & Chem, Lanzhou 730050, Peoples R China
推荐引用方式 GB/T 7714	Yu, Yang,Zhu, Ming,Huang, Qianghua,et al. Sorption properties of novel-fashioned low-cost hydrogen getters in a high-vacuum-multilayer insulation structure[J]. VACUUM,2021,192.
APA	Yu, Yang,Zhu, Ming,Huang, Qianghua,Huang, Liang,Dong, Chao,&Chen, Shuping.(2021).Sorption properties of novel-fashioned low-cost hydrogen getters in a high-vacuum-multilayer insulation structure.VACUUM,192.
MLA	Yu, Yang,et al."Sorption properties of novel-fashioned low-cost hydrogen getters in a high-vacuum-multilayer insulation structure".VACUUM 192(2021).