Hydrogen trap in fine Ca(OH)2 powder made from scallop-shell waste

H. Tsuchida, M. Aramaki, O. Furukimi, Y. Kato

Research output: Chapter in Book/Report/Conference proceedingConference contribution


Hydrogen trap was implied for calcium hydroxide Ca(OH)2 powder made from scallop (Patinopecten yessoensis) shell waste at high temperature of around 800°C to 900°C. Large quantities of seashells are abandoned every day and it is important to make use of them. The Ca(OH)2powder was made by heating the fine grain scallop-shell powder up to about 1100°C and then quenched in water. Then the Ca(OH)2 powder was heated at temperature between 600 °C and 1300 °C for 30 min. in flowing Ar + 3% hydrogen gas. The hydrogen trap of the heat-treated scallop-shell powder was measured by using oxidation-reduction potential (ORP) analysis and nuclear magnetic resonance (NMR). At heat-treatment temperature of 900°C, the samples showed the lowest ORP that implies the highest adsorption of hydrogen. The NMR study also revealed an observation of sharp peaks at the 900°C, implying hydrogen trap as well.

Original languageEnglish
Title of host publicationElectrochemical Energy Summit (E2S) - Poster Session
EditorsW.-S. Yoon, B. Liaw, A. Weber, H. Uchida, M. Glick
PublisherElectrochemical Society Inc.
Number of pages8
ISBN (Electronic)9781607685395
Publication statusPublished - Jan 1 2016
EventSymposium on Electrochemical Energy Summit (E2S) - Poster Session - PRiME 2016/230th ECS Meeting - Honolulu, United States
Duration: Oct 2 2016Oct 7 2016

Publication series

NameECS Transactions
ISSN (Print)1938-6737
ISSN (Electronic)1938-5862


OtherSymposium on Electrochemical Energy Summit (E2S) - Poster Session - PRiME 2016/230th ECS Meeting
CountryUnited States

All Science Journal Classification (ASJC) codes

  • Engineering(all)

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