Extended Data Fig. 7: Comparison of activities and H2 temperature-programmed reduction with different nitride-supported Ni.
From: Vacancy-enabled N2 activation for ammonia synthesis on an Ni-loaded catalyst
a, Ammonia synthesis activity and VN formation energies over various nitride-supported Ni catalysts. Error bars represent the standard deviation from three independent measurements. Reaction conditions: catalyst, 0.1 g; WHSV, 36,000 ml gcat−1 h−1; 400 °C, 0.1 MPa. b, Cumulative amount of NH3 generated over various nitride-supported Ni catalysts under pure H2 as a function of time. c, H2 temperature-programmed reduction (TPR) profiles for various nitride-supported Ni catalysts.
