Understanding preparation variables in the synthesis of Au/Al 2O3 using EXAFS and electron microscopy

J. H. Yang; J. D. Henao; C. Costello; M. C. Kung; H. H. Kung; J. T. Miller; A. J. Kropf; J. G. Kim; J. R. Regalbuto; M. T. Bore; H. N. Pham; A. K. Datye; J. D. Laeger; K. Kharas

doi:10.1016/j.apcata.2004.11.052

Understanding preparation variables in the synthesis of Au/Al ₂O₃ using EXAFS and electron microscopy

J. H. Yang, J. D. Henao, C. Costello, M. C. Kung, H. H. Kung, J. T. Miller, A. J. Kropf, J. G. Kim, J. R. Regalbuto, M. T. Bore, H. N. Pham, A. K. Datye, J. D. Laeger, K. Kharas

Northwestern University

Research output: Contribution to journal › Article

43 Citations (Scopus)

Abstract

The catalytic performance of Au/Al₂O₃ catalyst is highly sensitive to preparation procedure. EXAFS and TEM characterization of key steps in the preparation in conjunction with activity measurements result in deeper insights into precautions needed and the complex manner residual chloride impacts catalytic activity. Chloride affects the morphological (Au particle size), chemical (reducibility) as well as the catalytic (poisoning) properties of Au. Alternate preparation procedures to the conventional calcination of a catalyst prepared with deposition-precipitation at neutral pH were explored to increase Au loadings. It was found that low temperature H₂ reduction of a catalyst prepared at low pH but washed with NaOH is an effective preparation method.

Original language	English
Pages (from-to)	73-84
Number of pages	12
Journal	Applied Catalysis A: General
Volume	291
Issue number	1-2
DOIs	https://doi.org/10.1016/j.apcata.2004.11.052
Publication status	Published - Sep 12 2005

ASJC Scopus subject areas

Catalysis
Process Chemistry and Technology

Access to Document

10.1016/j.apcata.2004.11.052

Fingerprint Dive into the research topics of 'Understanding preparation variables in the synthesis of Au/Al <sub>2</sub>O<sub>3</sub> using EXAFS and electron microscopy'. Together they form a unique fingerprint.

Cite this

Yang, J. H., Henao, J. D., Costello, C., Kung, M. C., Kung, H. H., Miller, J. T., Kropf, A. J., Kim, J. G., Regalbuto, J. R., Bore, M. T., Pham, H. N., Datye, A. K., Laeger, J. D., & Kharas, K. (2005). Understanding preparation variables in the synthesis of Au/Al ₂O₃ using EXAFS and electron microscopy. Applied Catalysis A: General, 291(1-2), 73-84. https://doi.org/10.1016/j.apcata.2004.11.052

Understanding preparation variables in the synthesis of Au/Al ₂O₃ using EXAFS and electron microscopy. / Yang, J. H.; Henao, J. D.; Costello, C.; Kung, M. C.; Kung, H. H.; Miller, J. T.; Kropf, A. J.; Kim, J. G.; Regalbuto, J. R.; Bore, M. T.; Pham, H. N.; Datye, A. K.; Laeger, J. D.; Kharas, K.

In: Applied Catalysis A: General, Vol. 291, No. 1-2, 12.09.2005, p. 73-84.

Research output: Contribution to journal › Article

Yang, JH, Henao, JD, Costello, C, Kung, MC, Kung, HH, Miller, JT, Kropf, AJ, Kim, JG, Regalbuto, JR, Bore, MT, Pham, HN, Datye, AK, Laeger, JD & Kharas, K 2005, 'Understanding preparation variables in the synthesis of Au/Al ₂O₃ using EXAFS and electron microscopy', Applied Catalysis A: General, vol. 291, no. 1-2, pp. 73-84. https://doi.org/10.1016/j.apcata.2004.11.052

Yang, J. H. ; Henao, J. D. ; Costello, C. ; Kung, M. C. ; Kung, H. H. ; Miller, J. T. ; Kropf, A. J. ; Kim, J. G. ; Regalbuto, J. R. ; Bore, M. T. ; Pham, H. N. ; Datye, A. K. ; Laeger, J. D. ; Kharas, K. / Understanding preparation variables in the synthesis of Au/Al ₂O₃ using EXAFS and electron microscopy. In: Applied Catalysis A: General. 2005 ; Vol. 291, No. 1-2. pp. 73-84.

@article{af039ed6da864e4ca3c6020ac85c8c82,

title = "Understanding preparation variables in the synthesis of Au/Al 2O3 using EXAFS and electron microscopy",

abstract = "The catalytic performance of Au/Al2O3 catalyst is highly sensitive to preparation procedure. EXAFS and TEM characterization of key steps in the preparation in conjunction with activity measurements result in deeper insights into precautions needed and the complex manner residual chloride impacts catalytic activity. Chloride affects the morphological (Au particle size), chemical (reducibility) as well as the catalytic (poisoning) properties of Au. Alternate preparation procedures to the conventional calcination of a catalyst prepared with deposition-precipitation at neutral pH were explored to increase Au loadings. It was found that low temperature H2 reduction of a catalyst prepared at low pH but washed with NaOH is an effective preparation method.",

author = "Yang, {J. H.} and Henao, {J. D.} and C. Costello and Kung, {M. C.} and Kung, {H. H.} and Miller, {J. T.} and Kropf, {A. J.} and Kim, {J. G.} and Regalbuto, {J. R.} and Bore, {M. T.} and Pham, {H. N.} and Datye, {A. K.} and Laeger, {J. D.} and K. Kharas",

year = "2005",

month = sep,

day = "12",

doi = "10.1016/j.apcata.2004.11.052",

language = "English",

volume = "291",

pages = "73--84",

journal = "Applied Catalysis A: General",

issn = "0926-860X",

publisher = "Elsevier",

number = "1-2",

}

TY - JOUR

T1 - Understanding preparation variables in the synthesis of Au/Al 2O3 using EXAFS and electron microscopy

AU - Yang, J. H.

AU - Henao, J. D.

AU - Costello, C.

AU - Kung, M. C.

AU - Kung, H. H.

AU - Miller, J. T.

AU - Kropf, A. J.

AU - Kim, J. G.

AU - Regalbuto, J. R.

AU - Bore, M. T.

AU - Pham, H. N.

AU - Datye, A. K.

AU - Laeger, J. D.

AU - Kharas, K.

PY - 2005/9/12

Y1 - 2005/9/12

N2 - The catalytic performance of Au/Al2O3 catalyst is highly sensitive to preparation procedure. EXAFS and TEM characterization of key steps in the preparation in conjunction with activity measurements result in deeper insights into precautions needed and the complex manner residual chloride impacts catalytic activity. Chloride affects the morphological (Au particle size), chemical (reducibility) as well as the catalytic (poisoning) properties of Au. Alternate preparation procedures to the conventional calcination of a catalyst prepared with deposition-precipitation at neutral pH were explored to increase Au loadings. It was found that low temperature H2 reduction of a catalyst prepared at low pH but washed with NaOH is an effective preparation method.

AB - The catalytic performance of Au/Al2O3 catalyst is highly sensitive to preparation procedure. EXAFS and TEM characterization of key steps in the preparation in conjunction with activity measurements result in deeper insights into precautions needed and the complex manner residual chloride impacts catalytic activity. Chloride affects the morphological (Au particle size), chemical (reducibility) as well as the catalytic (poisoning) properties of Au. Alternate preparation procedures to the conventional calcination of a catalyst prepared with deposition-precipitation at neutral pH were explored to increase Au loadings. It was found that low temperature H2 reduction of a catalyst prepared at low pH but washed with NaOH is an effective preparation method.

UR - http://www.scopus.com/inward/record.url?scp=23844473787&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=23844473787&partnerID=8YFLogxK

U2 - 10.1016/j.apcata.2004.11.052

DO - 10.1016/j.apcata.2004.11.052

M3 - Article

AN - SCOPUS:23844473787

VL - 291

SP - 73

EP - 84

JO - Applied Catalysis A: General

JF - Applied Catalysis A: General

SN - 0926-860X

IS - 1-2

ER -