Enhanced N2-to-NH3 conversion efficiency on Cu3P nanoribbon electrocatalyst

Catalytic N2-to-NH3 Conversion by Fe at Lower Driving Force: A Proposed Role for Metallocene-Mediated PCET

We have recently reported on several Fe catalysts for N2-to-NH3 conversion that operate at low temperature (-78 °C) and atmospheric pressure while relying on a very strong reductant (KC8) and acid ([H(OEt2)2][BArF4]). Here we show that our original catalyst system, P3BFe, achieves both significantly improved efficiency for NH3 formation (up to 72% for e- delivery) and a comparatively high turno...

Detonations in H2-N2O-CH4-NH3-O2-N2 Mixtures

This report describes experimental studies and analyses on the detonation properties of flammable gases that may be present in the waste storage tanks at Hanford, WA. These studies were carried out in the Explosion Dynamics Laboratory, part of the the Graduate Aeronautical Laboratories of the California Institute of Technology (GALCIT). Detonation cell sizes and pressures were measured in the G...

Modeling and Multi-Objective Optimization of NOx Conversion Efficiency and NH3 Slip for a Diesel Engine

The objective of the study is to present the modeling and multi-objective optimization of NOx conversion efficiency and NH3 slip in the Selective Catalytic Reduction (SCR) catalytic converter for a diesel engine. A novel ensemble method based on a support vector machine (SVM) and genetic algorithm (GA) is proposed to establish the models for the prediction of upstream and downstream NOx emissio...

Characterization of an Fe≡N-NH2 Intermediate Relevant to Catalytic N2 Reduction to NH3.

The ability of certain transition metals to mediate the reduction of N2 to NH3 has attracted broad interest in the biological and inorganic chemistry communities. Early transition metals such as Mo and W readily bind N2 and mediate its protonation at one or more N atoms to furnish M(N(x)H(y)) species that can be characterized and, in turn, extrude NH3. By contrast, the direct protonation of Fe-...

Enhanced conversion efficiency in wide-bandgap GaNP solar cells