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Zinc Hydroxyapatite Catalyst for Decomposition of 2‐Propanol
Author(s) -
Low Hou Ran,
Avdeev Maxim,
Ramesh Kanaparthi,
White Timothy John
Publication year - 2012
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.201104755
Subject(s) - zinc , decomposition , materials science , catalysis , amorphous solid , chemical engineering , carbon fibers , carbon monoxide , propanol , organic chemistry , chemistry , metallurgy , composite material , composite number , methanol , engineering
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.