Influence of preparation conditions on catalytic activity and stability of platinum on alumina catalysts in methane oxidation

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Influence of preparation conditions on catalytic activity and stability of platinum on alumina catalysts in methane oxidation. / Nartova, Anna V.; Kovtunova, Larisa M.; Khudorozhkov, Alexander K. et al.

In: Applied Catalysis A: General, Vol. 566, 25.09.2018, p. 174-180.

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

BibTeX

@article{337694a88a4c48639705849bbcb683f1,

title = "Influence of preparation conditions on catalytic activity and stability of platinum on alumina catalysts in methane oxidation",

abstract = "The TEM, XPS, and XRD methods were used to study the influence of conditions of catalyst preparation on the activity and stability of platinum on alumina catalysts in methane oxidation reaction. The catalyst samples were prepared by wet impregnating the γ-Al2O3 support with the solutions of precursors prepared on the commercial platinum nitrate. In the course of the study the composition of the precursor solution and pretreatment of the support were varied. It was shown that the highest catalytic activity and stability to sintering of the active component nanoparticles in methane oxidation is reached in the case of strong interaction of the active component with the support surface providing for the stabilization of the ionic forms of platinum. The use of modifying additives (tetramethylammonium hydroxide, glacial acetic acid) facilitates reduction of the active component both in thermal treatment and in catalytic reaction, which causes a decrease in catalytic activity and stability of the system under used conditions.",

keywords = "Methane oxidation, Pt/alumina catalysts, TEM, XPS, XRD, SURFACE SITES, COMBUSTION, PRECURSOR, ADSORPTION, DEEP OXIDATION, PT/AL2O3, PT/ALUMINA, PARTICLE-SIZE",

author = "Nartova, {Anna V.} and Kovtunova, {Larisa M.} and Khudorozhkov, {Alexander K.} and Shefer, {Kristina I.} and Shterk, {Genrikh V.} and Kvon, {Ren I.} and Bukhtiyarov, {Valerii I.}",

note = "Publisher Copyright: {\textcopyright} 2018 Elsevier B.V.",

year = "2018",

month = sep,

day = "25",

doi = "10.1016/j.apcata.2018.08.029",

language = "English",

volume = "566",

pages = "174--180",

journal = "Applied Catalysis A: General",

issn = "0926-860X",

publisher = "Elsevier",

}

RIS

TY - JOUR

T1 - Influence of preparation conditions on catalytic activity and stability of platinum on alumina catalysts in methane oxidation

AU - Nartova, Anna V.

AU - Kovtunova, Larisa M.

AU - Khudorozhkov, Alexander K.

AU - Shefer, Kristina I.

AU - Shterk, Genrikh V.

AU - Kvon, Ren I.

AU - Bukhtiyarov, Valerii I.

PY - 2018/9/25

Y1 - 2018/9/25

N2 - The TEM, XPS, and XRD methods were used to study the influence of conditions of catalyst preparation on the activity and stability of platinum on alumina catalysts in methane oxidation reaction. The catalyst samples were prepared by wet impregnating the γ-Al2O3 support with the solutions of precursors prepared on the commercial platinum nitrate. In the course of the study the composition of the precursor solution and pretreatment of the support were varied. It was shown that the highest catalytic activity and stability to sintering of the active component nanoparticles in methane oxidation is reached in the case of strong interaction of the active component with the support surface providing for the stabilization of the ionic forms of platinum. The use of modifying additives (tetramethylammonium hydroxide, glacial acetic acid) facilitates reduction of the active component both in thermal treatment and in catalytic reaction, which causes a decrease in catalytic activity and stability of the system under used conditions.

AB - The TEM, XPS, and XRD methods were used to study the influence of conditions of catalyst preparation on the activity and stability of platinum on alumina catalysts in methane oxidation reaction. The catalyst samples were prepared by wet impregnating the γ-Al2O3 support with the solutions of precursors prepared on the commercial platinum nitrate. In the course of the study the composition of the precursor solution and pretreatment of the support were varied. It was shown that the highest catalytic activity and stability to sintering of the active component nanoparticles in methane oxidation is reached in the case of strong interaction of the active component with the support surface providing for the stabilization of the ionic forms of platinum. The use of modifying additives (tetramethylammonium hydroxide, glacial acetic acid) facilitates reduction of the active component both in thermal treatment and in catalytic reaction, which causes a decrease in catalytic activity and stability of the system under used conditions.

KW - Methane oxidation

KW - Pt/alumina catalysts

KW - TEM

KW - XPS

KW - XRD

KW - SURFACE SITES

KW - COMBUSTION

KW - PRECURSOR

KW - ADSORPTION

KW - DEEP OXIDATION

KW - PT/AL2O3

KW - PT/ALUMINA

KW - PARTICLE-SIZE

UR - http://www.scopus.com/inward/record.url?scp=85052886060&partnerID=8YFLogxK

U2 - 10.1016/j.apcata.2018.08.029

DO - 10.1016/j.apcata.2018.08.029

M3 - Article

AN - SCOPUS:85052886060

VL - 566

SP - 174

EP - 180

JO - Applied Catalysis A: General

JF - Applied Catalysis A: General

SN - 0926-860X

ER -

ID: 16481481