How iron pyridine SACs are made. (IMAGE) Tokyo Metropolitan University Caption A precursor of Fe-MOF is prepared which is ground together with melamine. The resulting powder is put in a tube in an inert nitrogen atmosphere before being heated to high temperatures (calcination). Credit Tokyo Metropolitan University, ACS Environ. Sci. Technol. 2022, DOI: 10.1021/acs.est.1c05980 Usage Restrictions Image can be used with credit License Original content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.