Electron microscopic studies of natural gas oxidation catalyst – Effects of thermally accelerated aging on catalyst microstructure

Mari Honkanen; Thomas W. Hansen; Hua Jiang; Marja Kärkkäinen; Mika Huuhtanen; Olli Heikkinen; Kauko Kallinen; Jouko Lahtinen; Riitta L. Keiski; Jakob B. Wagner; Minnamari Vippola

doi:10.1016/j.jcat.2017.03.003

Electron microscopic studies of natural gas oxidation catalyst – Effects of thermally accelerated aging on catalyst microstructure

Mari Honkanen^*
, Thomas W. Hansen
, Hua Jiang
, Marja Kärkkäinen
, Mika Huuhtanen
, Olli Heikkinen
, Kauko Kallinen
, Jouko Lahtinen
, Riitta L. Keiski
, Jakob B. Wagner
, Minnamari Vippola

^*Tämän työn vastaava kirjoittaja

Tutkimustuotos: Artikkeli › Tieteellinen › vertaisarvioitu

13 Sitaatiot (Scopus)

Abstrakti

Structural changes of PtPd nanoparticles in a natural gas oxidation catalyst were studied at elevated temperatures in air and low-oxygen conditions and in situ using environmental transmission electron microscopy (ETEM). The fresh catalyst shows x particles on the γ-Al₂O₃ support. At 700 °C, the noble metal oxide decomposes and Pt gets trapped by PdO particles followed by formation of metallic Pd and Pt containing particles. At 1000 °C, the particles had a metallic Pd and Pt containing core surrounded by PdO particles. In addition, the presence of

Alkuperäiskieli	Englanti
Sivut	19-29
Sivumäärä	11
Julkaisu	Journal of Catalysis
Vuosikerta	349
DOI - pysyväislinkit	https://doi.org/10.1016/j.jcat.2017.03.003
Tila	Julkaistu - 1 toukok. 2017
OKM-julkaisutyyppi	A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä

Julkaisufoorumi-taso

Jufo-taso 3

!!ASJC Scopus subject areas

Catalysis
Physical and Theoretical Chemistry

Pääsy asiakirjaan

10.1016/j.jcat.2017.03.003

Siteeraa tätä

Honkanen, M., Hansen, T. W., Jiang, H., Kärkkäinen, M., Huuhtanen, M., Heikkinen, O., Kallinen, K., Lahtinen, J., Keiski, R. L., Wagner, J. B., & Vippola, M. (2017). Electron microscopic studies of natural gas oxidation catalyst – Effects of thermally accelerated aging on catalyst microstructure. Journal of Catalysis, 349, 19-29. https://doi.org/10.1016/j.jcat.2017.03.003

@article{f937f949a4ae4e739fe9cf8aab9afd4a,

title = "Electron microscopic studies of natural gas oxidation catalyst – Effects of thermally accelerated aging on catalyst microstructure",

abstract = "Structural changes of PtPd nanoparticles in a natural gas oxidation catalyst were studied at elevated temperatures in air and low-oxygen conditions and in situ using environmental transmission electron microscopy (ETEM). The fresh catalyst shows x particles on the γ-Al2O3 support. At 700 °C, the noble metal oxide decomposes and Pt gets trapped by PdO particles followed by formation of metallic Pd and Pt containing particles. At 1000 °C, the particles had a metallic Pd and Pt containing core surrounded by PdO particles. In addition, the presence of ",

keywords = "Environmental transmission electron microscope, Low-oxygen conditions, Natural gas oxidation, Palladium, Platinum, Sintering, Thermal aging",

author = "Mari Honkanen and Hansen, \{Thomas W.\} and Hua Jiang and Marja K{\"a}rkk{\"a}inen and Mika Huuhtanen and Olli Heikkinen and Kauko Kallinen and Jouko Lahtinen and Keiski, \{Riitta L.\} and Wagner, \{Jakob B.\} and Minnamari Vippola",

year = "2017",

month = may,

day = "1",

doi = "10.1016/j.jcat.2017.03.003",

language = "English",

volume = "349",

pages = "19--29",

journal = "Journal of Catalysis",

issn = "0021-9517",

publisher = "Academic Press",

}

Honkanen, M, Hansen, TW, Jiang, H, Kärkkäinen, M, Huuhtanen, M, Heikkinen, O, Kallinen, K, Lahtinen, J, Keiski, RL, Wagner, JB & Vippola, M 2017, 'Electron microscopic studies of natural gas oxidation catalyst – Effects of thermally accelerated aging on catalyst microstructure', Journal of Catalysis, Vuosikerta 349, Sivut 19-29. https://doi.org/10.1016/j.jcat.2017.03.003

TY - JOUR

T1 - Electron microscopic studies of natural gas oxidation catalyst – Effects of thermally accelerated aging on catalyst microstructure

AU - Honkanen, Mari

AU - Hansen, Thomas W.

AU - Jiang, Hua

AU - Kärkkäinen, Marja

AU - Huuhtanen, Mika

AU - Heikkinen, Olli

AU - Kallinen, Kauko

AU - Lahtinen, Jouko

AU - Keiski, Riitta L.

AU - Wagner, Jakob B.

AU - Vippola, Minnamari

PY - 2017/5/1

Y1 - 2017/5/1

N2 - Structural changes of PtPd nanoparticles in a natural gas oxidation catalyst were studied at elevated temperatures in air and low-oxygen conditions and in situ using environmental transmission electron microscopy (ETEM). The fresh catalyst shows x particles on the γ-Al2O3 support. At 700 °C, the noble metal oxide decomposes and Pt gets trapped by PdO particles followed by formation of metallic Pd and Pt containing particles. At 1000 °C, the particles had a metallic Pd and Pt containing core surrounded by PdO particles. In addition, the presence of

AB - Structural changes of PtPd nanoparticles in a natural gas oxidation catalyst were studied at elevated temperatures in air and low-oxygen conditions and in situ using environmental transmission electron microscopy (ETEM). The fresh catalyst shows x particles on the γ-Al2O3 support. At 700 °C, the noble metal oxide decomposes and Pt gets trapped by PdO particles followed by formation of metallic Pd and Pt containing particles. At 1000 °C, the particles had a metallic Pd and Pt containing core surrounded by PdO particles. In addition, the presence of

KW - Environmental transmission electron microscope

KW - Low-oxygen conditions

KW - Natural gas oxidation

KW - Palladium

KW - Platinum

KW - Sintering

KW - Thermal aging

U2 - 10.1016/j.jcat.2017.03.003

DO - 10.1016/j.jcat.2017.03.003

M3 - Article

AN - SCOPUS:85016079754

SN - 0021-9517

VL - 349

SP - 19

EP - 29

JO - Journal of Catalysis

JF - Journal of Catalysis

ER -

Electron microscopic studies of natural gas oxidation catalyst – Effects of thermally accelerated aging on catalyst microstructure

Abstrakti

Julkaisufoorumi-taso

!!ASJC Scopus subject areas

Pääsy asiakirjaan

Sormenjälki

Siteeraa tätä