Efficient ammonia synthesis over a Ru/La_0.5Ce_0.5O_1.75 catalyst pre-reduced at high temperature.

ABSTRACT: Ammonia is an important feedstock for producing fertiliser and is also a potential energy carrier. However, the process currently used for ammonia synthesis, the Haber-Bosch process, consumes a huge amount of energy; therefore the development of new catalysts for synthesising ammonia at a high rate under mild conditions (low temperature and low pressure) is necessary. Here, we show that Ru/La_0.5Ce_0.5O_1.75 pre-reduced at an unusually high temperature (650 °C) catalysed ammonia synthesis at extremely high rates under mild conditions; specifically, at a reaction temperature of 350 °C, the rates were 13.4, 31.3, and 44.4 mmol g^-1 h^-1 at 0.1, 1.0, and 3.0 MPa, respectively. Kinetic analysis revealed that this catalyst is free of hydrogen po

SUBMITTER: Ogura Y 

PROVIDER: S-EPMC5897884 | biostudies-literature | 2018 Feb

REPOSITORIES: biostudies-literature