Design of novel nitrogen reduction site led by atomic resolution electron microscopy analysis

　The synthesis catalysts and process of ammonia as a hydrogen carrier with excellent storage and transport properties for hydrogen have attracted attention as a means of effective use of renewable energy. In order to develop highly active catalysts, it is necessary to analyze the structure and chemical state of the active site and lead to a new design.
Dr. Sato established a method to directly analyze the active site of catalysts at the atomic level by combining observation and analysis techniques using aberration-corrected transmission electron microscopes and various spectroscopic detectors which require to be used without exposure to air in the development of catalysts. His research is extremely important as analytical and measurement techniques that lead to technological innovation in catalytic reaction processes. This method clarifies the structure and mechanism of nitrogen reduction sites (active site) required for highly active ammonia synthesis catalysts. Further it has achieved high activation and non-precious metallization, and developed world-class practical catalysts.
The analytical methods developed will also be applied to actual catalyst development (design), which will contribute to the establishment of a carbon-neutral society by expanding the use of ammonia as a hydrogen carrier and the construction of a hydrogen distribution network.