Results 61 to 70 of about 31,534 (227)
Bioelectrochemical Haber–Bosch Process: An Ammonia‐Producing H2/N2 Fuel Cell
Angewandte Chemie, 2017 AbstractNitrogenases are the only enzymes known to reduce molecular nitrogen (N2) to ammonia (NH3). By using methyl viologen (N,N′‐dimethyl‐4,4′‐bipyridinium) to shuttle electrons to nitrogenase, N2 reduction to NH3 can be mediated at an electrode surface.
Ross D. Milton +6 more
openaire +3 more sources
RSC Sustainability, 2023 Inability to predict the weather, and to rapidly adjust the operating rate of Haber–Bosch synthesis, are major challenges for green ammonia production. This article assesses and provides methods for managing both challenges.
Nicholas Salmon +1 more
openaire +2 more sources
Advanced Science, EarlyView.Inspired by Nitrite reductase, a metal–organic framework overlayer is introduced to regulate the interfacial hydration microenvironment on Cu electrodes, enriching hydrated K+ species that act as efficient proton donors. This strategy enables nitrate‐to‐ammonia conversion with near‐unity selectivity at industrial‐level current densities in neutral ...
Yuyin Mao +4 more
wiley +1 more source
Recent Advances and Challenges in Ammonia‐Hydrogen Energy Conversion
Advanced Science, EarlyView.This work summarizes the latest progress of various catalytic methods in ammonia‐hydrogen energy conversion. The challenges and outlook of ammonia‐hydrogen energy conversion system are also emphasized. This work expects to build a blueprint of renewable and efficient ammonia‐hydrogen energy conversion systems under mild conditions.
Menghao Lv +6 more
wiley +1 more source
Superlattice Architectures for Advancing Photothermal Catalysis: Mechanisms and Applications
Advanced Science, EarlyView.This paper provides a timely overview of superlattice architectures in photothermal catalysis, with a systematic review on mechanisms at both atomic and macroscopic scales in different processes, challenges, and future opportunities. ABSTRACT Photothermal catalysis has emerged as a powerful strategy to complement photocatalysis by harnessing full ...
Yuzhao Wu +5 more
wiley +1 more source
Electrochemical Nitrogen Fixation for Green Ammonia: Recent Progress and Challenges
Advanced Science, 2023 Ammonia, a key feedstock used in various industries, has been considered a sustainable fuel and energy storage option. However, NH3 production via the conventional Haber–Bosch process is costly, energy‐intensive, and significantly contributing to a ...
Haneul Jin +5 more
doaj +1 more source
The secrets of Koberwitz: The diffusion of Rudolf Steiner’s Agriculture Course and the founding of Biodynamic Agriculture [PDF]
, 2011 Rudolf Steiner presented his Agriculture Course to a group of 111, farmers and others, at Koberwitz (Kobierzyce, Poland) in 1924. Steiner spoke of an agriculture to ‘heal the earth’ and he laid the philosophical and practical underpinnings for such a ...
Paull, John
core +1 more source
AIChE Journal, EarlyView.Abstract In pharmaceutical industries, continuous manufacturing methods have already been well established to improve productivity and process intensification. However, to better understand the trade‐offs of continuous crystallizers over the existing batch production systems, a robust technoeconomic cost and sustainability analysis is necessary to ...
Jungsoo Rhim, Zoltan K. Nagy
wiley +1 more source
Reaction mechanism and kinetics for ammonia synthesis on the Fe(211) reconstructed surface [PDF]
, 2019 To provide guidelines to accelerate the Haber–Bosch (HB) process for synthesis of ammonia from hydrogen and nitrogen, we used Quantum Mechanics (QM) to determine the reaction mechanism and free energy reaction barriers under experimental reaction ...
An, Qi +3 more
core +1 more source
Haber-Bosch process intensification: A first step towards small-scale distributed ammonia production
Chemical Engineering Research and Design, 2023 High operating pressures are needed in the Haber-Bosch process to push up the NH3 conversion, which is limited by the thermodynamic equilibrium. This evidence hinders the application of distributed renewable ammonia production on small-scale. One possible solution to overcome this problem is the NH3 removal downstream the reaction stage.
Spatolisano E., Pellegrini L. A.
openaire +2 more sources