High capacity immobilization of TRPO waste by Gd2Zr 2O7 pyrochlore

Xirui Lu, Yi Ding, Hui Dan, Mingfen Wen, Xueli Mao, Yanlin Wu, Xiaolin Wang

Research output: Contribution to journalArticlepeer-review

21 Citations (Scopus)


This paper describes the immobilization of trialkyl phosphine oxides (TRPO) waste in Gd2Zr2O7 pyrochlore through designed elements occupation. It was found that up to 45 wt% TRPO waste could be successfully incorporated in the Gd2Zr2O7 pyrochlore structure and the ordered pyrochlore structure was maintained. The Gd and Zr position could be replaced by the elements of TRPO wastes in the same time through designed elements occupation. Furthermore, the results of anti-leaching experiment shown that the immobilized TRPO waste have good chemical durability. This route provides an alternative flexible system to tackle radioactive wastes arising from the advanced nuclear reactors.

Original languageEnglish
Pages (from-to)1-3
Number of pages3
JournalMaterials Letters
Publication statusPublished - 2014 Dec 1
Externally publishedYes


  • Chemical durability
  • Nuclear waste forms
  • Pyrochlore
  • Solubility
  • TRPO wastes

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering


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