Assertion: ammonium carbonate | /r/HasProperty | employed as substrate
Facets:
value: for the synthesis of urea
type: PURPOSE
Source sentences:
text: Ammonium carbonate, ammonium bicarbonate, and ammonia gas, which are possible forms of recovered ammonia from the environment, were also employed as substrates for the synthesis of urea in addition to ammonium carbamate, the results of which are shown in Fig. 4.