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Characteristics of Hydrogen Iodide Decomposition using Alumina-Supported Ni Based Catalyst

Ni 기반 촉매를 이용한 HI 분해 반응 특성

KIM, JI HYE;PARK, CHU SIK;KIM, CHANG HEE;KANG, KYOUNG SOO;JEONG, SEONG UK;CHO, WON CHUL;KIM, YOUNG HO;BAE, KI KWANG
김지혜;박주식;김창희;강경수;정성욱;조원철;김영호;배기광

  • Received : 2015.11.30
  • Accepted : 2015.12.30
  • Published : 2015.12.30

Abstract

HI decomposition reaction requires a catalyst for the efficient production of hydrogen as a key reaction for hydrogen production in sulfur-iodine thermochemical water-splitting (SI) cycle. As a catalyst used in the reaction, the performance of platinum catalyst is excellent. While, the platinum catalyst is not economical. Therefore, studies of a nickel catalyst that could replace platinum have been carried out. In this study, the characteristics of the catalytic HI decomposition on the amount of loaded nickel (Ni = 0.1, 0.5, 1, 3, 5, 10 wt%) were investigated. As the supported Ni amount increased up to 3 wt%, HI decomposition was found to increase in linear proportion. However, the conversion of $Ni/Al_2O_3$ catalyst loaded above 3 wt% was not linear. It was thought that the different HI decomposition characteristics was caused in the size and metal dispersion of Ni particles of catalyst. The physical property of catalyst before and after HI decomposition reaction was characterized by BET, chemisorption, XRD and SEM analysis.

Keywords

S-I process;HI decomposition;Nickel catalyst;Alumina

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Cited by

  1. supported Ni in the HI Decomposition of Sulfur-Iodine Process vol.67, pp.2261-236X, 2016, https://doi.org/10.1051/matecconf/20166706063

Acknowledgement

Supported by : 한국연구재단