Thermal decomposition behaviour of irradiated tri n-butyl phosphate and mixture of di and mono n-butyl phosphate-nitric acid systems

摘要

Highlights?Thermal decomposition of TBP & mixture of DBP+MBP in the presence & absence of HNO3was studied.?Neat TBP is stable up to 527K, while the irradiated TBP exhibits decomposition beyond 513K.?Rise in temperature and pressure increases exponentially with increase of HNO3content.?Thermo-kinetic parameters were derived for the decomposition reactions.?Decomposition products were characterised by FT-IR and QMS techniques.AbstractTri-n-butyl phosphate (TBP) is employed in nuclear reprocessing plants. During the evaporation process, formation of red oil, an unstable compound can cause runaway reaction. In this context, thermal decomposition of TBP-HNO3and TBP-n-dodec