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Ammonia Covered in Forbes.com Power-to-X Review
Article

Ammonia Covered in Forbes.com Power-to-X Review

Ryan Miller May 16, 2019

Last week, Forbes.com published Power-To-X In The German Experience: Another In The List Of Growing Energy Transition Strategies.  The article in effect nominates ammonia as a singularly promising up-and-comer in the field of the alternative energy vectors.  Such an endorsement

Improvement of Haber-Bosch: Adsorption vs. Absorption
Article

Improvement of Haber-Bosch: Adsorption vs. Absorption

Ryan Miller December 01, 2017

At the recent NH3 Energy+ Topical Conference, Grigorii Soloveichik described the future of ammonia synthesis technologies as a two-way choice: Improvement of Haber-Bosch or Electrochemical Synthesis. Two such Haber-Bosch improvement projects, which received ARPA-E-funding under Soloveichik's program direction, also presented

Screening Binary Redox Pairs for Solar Thermochemical Ammonia Synthesis Using Machine Learned Predictions of Gibbs Formation Energies at Finite Temperatures
Paper

Screening Binary Redox Pairs for Solar Thermochemical Ammonia Synthesis Using Machine Learned Predictions of Gibbs Formation Energies at Finite Temperatures

Ryan Miller November 2, 2017

Solar thermochemical ammonia synthesis (STAS) is a reduction/oxidation (redox) cycle which enables the production of ammonia (NH3) from air, water, and concentrated sunlight. In this process, a metal nitride (MN) is oxidized by steam to produce a metal oxide (MO) and NH3; the resulting MO is reduced at high temperature (driven by concentrated solar radiation) and subsequently used to reduce atmospheric nitrogen (N2) and reform the MN and restart the NH3 synthesis cycle. The identification of optimal redox pairs (MO/MN) for this process has been historically limited by the lack of thermochemical data (i.e., Gibbs formation energies at finite temperatures)…