Standard Heat of Formation of Uranium Compounds

AI Thread Summary
Data exists on the standard heats of formation for various uranium compounds, but there is a lack of information on ammonium diuranate (ADU), a key intermediate in uranium processing. ADU is typically heated to release ammonia and produce U3O8, raising questions about how to determine the heat of reaction. To obtain the heat of reaction, one must know the standard heats of formation of both the products and reactants. The discussion seeks guidance on where to find specific heat values and heats of formation for ammonium diuranate. Despite the inquiry being made in 2019, relevant information remains scarce.
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There is a bit of data and literature that shows the standard heats of formation for various uranium compounds including UO3, U3O8 UF6 etc.
However there appears to be nothing on ammonium diuranate which is one of the most common intermediate forms produced by precipitation. The ADU as it is commonly known is then heated until a reaction occurs and the solid releases its ammonia to ultimately produce U3O8. Is the only way to get the Heat of reaction to know the Standard Heats of formation of the products and reactants? If yes, where is the best place to find the Heat of formation and specific heat values for ammonium diuranate?
Can anyone help?
 
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Even at this later date (2019), there doesn't seem to be any information on this.
 

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