MRS2017 - Scientific Basis for Nuclear Waste Management Symposium 2017

NMR Methods for Study of Waste Glasses

Not scheduled

20m

Poster Novel techniques in waste-form development (including glass, ceramic, metallic, and composite waste forms)

Speaker

Mr Kristian Barnsley (University of Warwick)

Description

11B MAS NMR methods for analysis of borosilicate glasses for storage of high-level waste.

Summary

As part of a wider project looking at the use of borosilicate glasses as a high-level nuclear waste form undertaken by a group of four universities in the UK and USA, MAS NMR has been used at The University of Warwick as a tool for investigating structure and speciation in these glasses. This study was motivated but recent findings that waste loading rate could be greatly increased from 18 to 45 %mass by targeting certain phases.

Multiple fields were used to assist in producing accurate simulations of the quadropolar parameters of the nuclear sites, as well a software package that allows for the inclusion of disorder in these parameters. Low field 11B MAS NMR (2.3 T) was also found to be a very promising tool for the analysis of these glasses, with the broadened lineshapes making the separate features more distinct.

Presentation Materials

Poster

Australia_Poster_KB.pdf