Identification of γ-Fe 2O 3 in Ferrite-ferric Oxide Catalysts Using Second Derivative IR Spectra
Yang Li-Ying, Chen Shu, Xu Wen-Qing, Li Guo-Ying, YIN Yuan-Gen
Acta Phys. -Chim. Sin. . 1994, (02): 164 -167 .  DOI: 10.3866/PKU.WHXB19940215