Abstract
New observations are reported for the reduction of molecular nitrogen in the V(OH)/sub 2//Mg(OH)/sub 2/ and V(OH)/sub 2//ZrO/sub 2/.H/sub 2/O systems. The reduction of N/sub 2/ can be directed to yield predominantly hydrazine or ammonia by selecting appropriate reaction conditions. Hydrazine is formed preferentially if the reduction of N/sub 2/ is conducted at high dilution, at high N/sub 2/ pressures, at low V(OH)/sub 2//Mg(OH)/sub 2/ ratios, and at high NaOH concentrations. Under these conditions only traces of ammonia are formed because the secondary reduction of produce hydrazine to ammonia is effectively suppressed. Trapping experiments and the observed yields of hydrazine on p/sub n2//sup 2/ are consistent with the previously proposed mechanism of hydrazine formation through the disproportionation of diazene and rule out a direct reduction of N/sub 2/ to N/sub 2/H/sub 4/. The formation of ammonia is favored at small reaction solution volumes, at high V(OH)/sub 2//Mg(OH)/sub 2/ ratios, at low NaOH concentrations. In the V(OH)/sub 2//ZrO/sub 2/.H/sub 2/O system, the yields of ammonia and of hydrazine are generally lower but depend qualitatively on the same variables. The ammonia is formed by the secondary reduction of product hydazine by V(OH)/sub 2/.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
