Zinc Hydroxyapatite Catalyst for Decomposition of 2‐Propanol

Hydroxyapatite (HAp) is attracting interest as a heterogeneous catalyst due to its “zeolitic” properties that allow tailoring of chemically active surface sites for specific applications. Here, the crystallographic modification of HAp through incorporation of zinc (Zn 2+ ) was studied using diffraction and spectroscopic techniques. The preferential displacement of tunnel calcium (Ca 2+ ) by covalently bonded Zn 2+ inhibits crystal growth and promotes the retention of an amorphous (10‐20 wt%) component. In combination, these factors create chemically active surfaces that allow Zn‐HAp materials to effectively absorb carbon monoxide (*characteristic vibration at ∼1711 cm ‐1 ) and catalyze the decomposition of 2‐propanol.