Used as a precursor in the synthesis of praseodymium-containing materials for catalytic applications, especially in automotive exhaust catalysts to reduce emissions. Employed in the production of specialty glasses and ceramics, where it provides yellow or green coloration and improves optical properties. Applied in the fabrication of doped crystals for solid-state lasers and fiber optics due to its luminescent characteristics. Also utilized in research settings for preparing praseodymium oxide coatings and thin films with magnetic or electrochemical functionality.