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Presentation

A Techno-Economic Model for Renewable Ammonia By Electrochemical Synthesis with Proton Conductive Membrane

Jamie GomezJohn BacaFernando Garzon

Ammonia as a renewable liquid fuel has increased global interest for long term energy storage and as a principal chemical candidate in overcoming the challenging practical issues such as storage and transport associated with hydrogen. It is known the Haber-Bosch method of producing ammonia is based on fossil fuels and has a high energy consumption as a result of operating temperatures and pressures of special concern. A techno-economic study is presented for the electrochemical synthesis of ammonia with proton conducting membrane at near ambient pressure. Different coupling pathways were investigated for production of hydrogen and generation of nitrogen to assess…

Presentation

Synthesis of Ammonia By RF Non-Thermal Plasma over Ni-MOF-74

Maria Carreon

Herein, we demonstrate a synergistic approach consisting on radiofrequency plasma to synthesize ammonia in the presence of Ni-MOF-74 as catalyst. The Ni-MOF displayed higher ammonia yields as com-pared to the pure Ni metal. Specifically, ammonia yields as high as 0.23 g-NH3 (kWh-g-catalyst)-1 and energy cost of 265 MJ mol-1 over Ni-MOF were observed. The enhanced catalytic activity of the Ni-MOF in the presence of plasma was attributed to the presence of pores that improved mass transfer of guest and product molecules during reaction, the presence of open Ni metal sites, and lower surface hydrogen re-combination. Furthermore, the ammonia energy yield…

Presentation

Electrochemical H; -Membrane Reactor for NH; Synthesis from N; and H; O By Electricity Using Ru Catalyst, Pd Membrane Cathode, Phosphate Electrolyte, and Pt Anode at 250˚C

Jun KubotaKanako Imamura

Renewable energies, such as solar and wind plants, are being widely installed in our society, and efficient utilization of redundant power becomes a challenge in the energy technology. Ammonia is one of the most produced chemicals, which is synthesized artificially from nitrogen and hydrogen, and most of ammonia is currently used for fertilizers maintaining human foodstuff. Now, ammonia is expected to be used as a fuel. Recently, many efforts are reported for the developments of direct-ammonia fuel cells, ammonia-fueled reciprocating engines, ammonia-fueled gas turbines, and ammonia cracker for hydrogen production. Although there are many ways for ammonia utilization as a…

Presentation

Boosting Ammonia Synthesis in NH; -Sieving Inorganic Membrane Reactor

Huazheng LiSurya PadinjarekuttShenxiang ZhangJi JiangFanglei ZhouQiaobei DongMiao Yu

Ammonia is one of the most important and widely produced chemicals worldwide, and a primary ingredient for fertilizer and hydrogen carrier for energy supplying. Currently, owing to the kinetic and thermodynamic restrictions of ammonia synthesis reaction, most of ammonia is produced under conditions of temperature up to 400-500 oC and pressure up to 100-200 bar (Haber-Bosch process), resulting to intensive energy input and accounting for 3% of global energy consumption annually. Although numerous NH3 synthesis catalysts with high activity has been developed recently, but the yield of NH3 is still low. Membrane reactor which can timely and exclusively remove trace…