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ID 114835
Author
Ehiro, Takuya Osaka Research Institute of Industrial Science and Technology
Dohshi, Satoru Osaka Research Institute of Industrial Science and Technology
Keywords
Hydroxyapatite
Catalyst
Isobutane
Isobutene
Coking
Content Type
Journal Article
Description
Hydroxyapatite (HAp) samples were prepared from precursor solutions with different Ca/P molar ratios. The HAp samples were utilized as catalysts for the oxidative dehydrogenation (ODH) of isobutane. Also, the HAp samples were characterized by N2 and H2O adsorption-desorption measurements, X-ray diffraction, inductively coupled plasma optical emission spectrometry, thermogravimetry-differential thermal analyses, and temperature-programmed oxidation (TPO). The Ca/P molar ratio of the precursor solution had a major influence on the catalytic activity and coking resistance ability. The HAp catalyst prepared from the stoichiometric precursor solution [HAp (1.67)] showed the highest isobutene yield. Furthermore, the white color of HAp (1.67) remained unchanged during the ODH of isobutene, indicating the absence of coke on the surface of HAp (1.67) after the reaction and its higher coking resistance ability. The results of the TPO measurements showed that the HAp (1.67) catalyst possesses the strongest oxidation ability which is likely related to its higher coking resistance ability.
Journal Title
Phosphorus Research Bulletin
ISSN
09184783
18822363
NCID
AA12109680
Publisher
Japanese Association of Inorganic Phosphorus Chemistry
Volume
35
Start Page
48
End Page
54
Published Date
2019
EDB ID
DOI (Published Version)
URL ( Publisher's Version )
FullText File
language
eng
TextVersion
Publisher
departments
Science and Technology