Influence of Hydrogen Sulfide and Redox Reactions on the Surface Properties and Hydrogen Permeability of Pd Membranes

Wei Feng, Qingyuan Wang, Xiaodong Zhu, Qingquan Kong, Jiejie Wu and Peipei Tu
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Wei Feng: Advanced Research Institute, Chengdu University, Chengdu 610106, China
Qingyuan Wang: Advanced Research Institute, Chengdu University, Chengdu 610106, China
Xiaodong Zhu: Advanced Research Institute, Chengdu University, Chengdu 610106, China
Qingquan Kong: Advanced Research Institute, Chengdu University, Chengdu 610106, China
Jiejie Wu: School of Materials Science and Engineering, Beihang University, Beijing 100083, China
Peipei Tu: Advanced Research Institute, Chengdu University, Chengdu 610106, China

Energies, 2018, vol. 11, issue 5, 1-10

Abstract: Although hydrogen sulfide (H 2 S) was always a negative factor leading to the reduction of hydrogen permeability of palladium (Pd) membranes, its proper application could result in a positive effect. In this study, pure Pd membranes were firstly reacted with H 2 S at 23–450 °C, and then treated by redox reactions. Afterwards, the hydrogen permeability was tested under different reaction conditions using a hydrogen penetrant testing device. Moreover, both products and morphology changes occurred on the Pd membrane surface were analyzed using XRD, XPS and SEM. The results showed that H 2 S was dissociated to produce sulfides at 23 °C. With a rise of temperature, a regular change took place in the reaction products, morphology of the Pd membrane surface and hydrogen permeability. Adsorbed impurities such as sulfides and free carbon on the Pd membrane surface were removed by the redox treatment. The hydrogen permeability was improved by about 80% for the Pd membrane material subjected to the treatment method stated the above against the untreated one.

Keywords: Pd membrane; hydrogen; permeability; surface; redoxreaction (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2018
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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