Oxygen X-ray absorption near-edge structure characterization of the Ba-doped yttria oxidative coupling catalyst

M. P. Kaminsky; G. W. Zajac; J. C. Campuzano; M. Faizt; L. Beaulaigue; K. Gofron; G. Jenningst; J. M. Yao; D. K. Saldin

doi:10.1016/0021-9517(92)90102-N

Oxygen X-ray absorption near-edge structure characterization of the Ba-doped yttria oxidative coupling catalyst

M. P. Kaminsky
, G. W. Zajac
, J. C. Campuzano
, M. Faizt
, L. Beaulaigue
, K. Gofron
, G. Jenningst
, J. M. Yao
, D. K. Saldin

Research output: Contribution to journal › Article › peer-review

11 Scopus citations

Abstract

Ba-doped Y₂O₃ is one of the most active catalysts for the oxidative coupling of methane. Here, based on measurements of the oxygen K-edge X-ray absorption edge, X-ray diffraction, X-ray fluorescence, and X-ray photoelectron spectroscopy and its catalytic activity and selectivity, we propose that the active sites are charge-deficient oxygen sites created as Bat+ substitutes into Y³⁺ lattice sites. The substitution is temperature dependent, becoming significant only at higher temperatures. We have found a correlation of catalytic activity and selectivity as a function of Ba loading on Y203. This is reflected in the oxygen K-edge absorption near the absorption edge.

Original language	English
Pages (from-to)	16-23
Number of pages	8
Journal	Journal of Catalysis
Volume	136
Issue number	1
DOIs	https://doi.org/10.1016/0021-9517(92)90102-N
State	Published - Jul 1992
Externally published	Yes

Funding

We acknowledge M. J. Spangler for the catalyst screening work. We acknowledge the support of the Amoco Corporation and the National Center for Supercomputer Applications for supercomputer time. This work was supported in part by the Department of En- ergy, Office of Basic Energy Sciences-Materials Sciences Contracts W-31-109-Eng-38 and DE-FG02-85ER4522 and by the Donors of the Petroleum Research Fund, administered by the American Chemical Society.

Access to Document

10.1016/0021-9517(92)90102-N

Cite this

@article{7148090b8d84469fa9618843ff6add0b,

title = "Oxygen X-ray absorption near-edge structure characterization of the Ba-doped yttria oxidative coupling catalyst",

abstract = "Ba-doped Y2O3 is one of the most active catalysts for the oxidative coupling of methane. Here, based on measurements of the oxygen K-edge X-ray absorption edge, X-ray diffraction, X-ray fluorescence, and X-ray photoelectron spectroscopy and its catalytic activity and selectivity, we propose that the active sites are charge-deficient oxygen sites created as Bat+ substitutes into Y3+ lattice sites. The substitution is temperature dependent, becoming significant only at higher temperatures. We have found a correlation of catalytic activity and selectivity as a function of Ba loading on Y203. This is reflected in the oxygen K-edge absorption near the absorption edge.",

author = "Kaminsky, \{M. P.\} and Zajac, \{G. W.\} and Campuzano, \{J. C.\} and M. Faizt and L. Beaulaigue and K. Gofron and G. Jenningst and Yao, \{J. M.\} and Saldin, \{D. K.\}",

year = "1992",

month = jul,

doi = "10.1016/0021-9517(92)90102-N",

language = "English",

volume = "136",

pages = "16--23",

journal = "Journal of Catalysis",

issn = "0021-9517",

publisher = "Elsevier",

number = "1",

}

TY - JOUR

T1 - Oxygen X-ray absorption near-edge structure characterization of the Ba-doped yttria oxidative coupling catalyst

AU - Kaminsky, M. P.

AU - Zajac, G. W.

AU - Campuzano, J. C.

AU - Faizt, M.

AU - Beaulaigue, L.

AU - Gofron, K.

AU - Jenningst, G.

AU - Yao, J. M.

AU - Saldin, D. K.

PY - 1992/7

Y1 - 1992/7

N2 - Ba-doped Y2O3 is one of the most active catalysts for the oxidative coupling of methane. Here, based on measurements of the oxygen K-edge X-ray absorption edge, X-ray diffraction, X-ray fluorescence, and X-ray photoelectron spectroscopy and its catalytic activity and selectivity, we propose that the active sites are charge-deficient oxygen sites created as Bat+ substitutes into Y3+ lattice sites. The substitution is temperature dependent, becoming significant only at higher temperatures. We have found a correlation of catalytic activity and selectivity as a function of Ba loading on Y203. This is reflected in the oxygen K-edge absorption near the absorption edge.

AB - Ba-doped Y2O3 is one of the most active catalysts for the oxidative coupling of methane. Here, based on measurements of the oxygen K-edge X-ray absorption edge, X-ray diffraction, X-ray fluorescence, and X-ray photoelectron spectroscopy and its catalytic activity and selectivity, we propose that the active sites are charge-deficient oxygen sites created as Bat+ substitutes into Y3+ lattice sites. The substitution is temperature dependent, becoming significant only at higher temperatures. We have found a correlation of catalytic activity and selectivity as a function of Ba loading on Y203. This is reflected in the oxygen K-edge absorption near the absorption edge.

UR - https://www.scopus.com/pages/publications/0009555943

U2 - 10.1016/0021-9517(92)90102-N

DO - 10.1016/0021-9517(92)90102-N

M3 - Article

AN - SCOPUS:0009555943

SN - 0021-9517

VL - 136

SP - 16

EP - 23

JO - Journal of Catalysis

JF - Journal of Catalysis

IS - 1

ER -

Oxygen X-ray absorption near-edge structure characterization of the Ba-doped yttria oxidative coupling catalyst

Abstract

Funding

Access to Document

Other files and links

Fingerprint

Cite this