Swift and efficient nuclear spin conversion of molecular hydrogen confined in Prussian blue analogs

Yuta Ohtsubo, Akio Mishima, Akihiro Hori, Ryotaro Matsuda, Ryo Ohtani, Masaaki Ohba

Research output: Contribution to journalArticle

Abstract

The ortho-isomer of molecular hydrogen (o-H2) was converted to the para-isomer (p-H2) within 600 s by using Prussian blue analogs, {MII 3[CrIII(CN)6]2} (MCr; M = Mn and Ni), as nuclear-spin conversion catalysts. The swift conversion was confirmed by in-situ Raman micro-spectroscopy under an H2 gas atmosphere (100 kPa) in a low temperature range (2090 K). The o-p ratio observed in MCr deviated from the theoretical value based on the Boltzmann distribution of H2 in a free rotational state to the para-rich proportion, which suggested the promotion of the o-p conversion at higher temperature.

Original languageEnglish
Pages (from-to)149-152
Number of pages4
JournalChemistry Letters
Volume49
Issue number2
DOIs
Publication statusPublished - Jan 1 2020

All Science Journal Classification (ASJC) codes

  • Chemistry(all)

Fingerprint Dive into the research topics of 'Swift and efficient nuclear spin conversion of molecular hydrogen confined in Prussian blue analogs'. Together they form a unique fingerprint.

  • Cite this