Tetraammineplatinum(II) and Tetraamminepalladium(II) Chromates as Precursors of Metal Oxide Catalysts

Standard

Tetraammineplatinum(II) and Tetraamminepalladium(II) Chromates as Precursors of Metal Oxide Catalysts. / Filatov, Evgeny; Lagunova, Varvara; Potemkin, Dmitry et al.

In: Chemistry - A European Journal, Vol. 26, No. 19, 01.04.2020, p. 4341-4349.

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

BibTeX

@article{e5abfbd2646648e0bb8707effae7db8d,

title = "Tetraammineplatinum(II) and Tetraamminepalladium(II) Chromates as Precursors of Metal Oxide Catalysts",

abstract = "[M(NH3)4]A (M=Pt, Pd; A=CrO4, Cr2O7) and [Pt(NH3)4(NO2)(Cr2O7)]NO3 complex salts were synthesized and characterized by a number of physicochemical methods of analysis (IR, single-crystal and powder XRD, and simultaneous thermogravimetry and differential scanning calorimetry with evolved gas analysis mass spectrometry). Thermolysis of the salts obtained in a hydrogen atmosphere proceeds with the partial reduction of chromium to a metallic state and the formation of MxCr1−x (M=Pt, Pd) metal solid solution with a chromium content of up to 22 at % and chromium(III) oxide. The thermal decomposition of salts in an inert and oxidizing atmosphere passes through the formation stage of the MCrO2 phase with the delafossite structure followed by its subsequent decomposition into chromium(III) oxide and noble metal. Nanosized Pt−Cr2O3 and Pd−Cr2O3 composites obtained by the thermolysis of precursor salts in air at 500 °C and being held at this temperature for 1 h showed a high catalytic activity in the CO total oxidation (TOX) and preferential oxidation in the excess of hydrogen (PROX) processes compared with that of monometallic Pt and Pd powders.",

keywords = "chromium, homogeneous catalysis, palladium, platinum, thermal decomposition, PALLADIUM, RU, PERFORMANCE, STABILITY, CO, PREFERENTIAL OXIDATION, CR, PD, DOUBLE COMPLEX SALTS, CELL",

author = "Evgeny Filatov and Varvara Lagunova and Dmitry Potemkin and Natalia Kuratieva and Andrey Zadesenets and Pavel Plyusnin and Alexander Gubanov and Sergey Korenev",

year = "2020",

month = apr,

day = "1",

doi = "10.1002/chem.201905391",

language = "English",

volume = "26",

pages = "4341--4349",

journal = "Chemistry - A European Journal",

issn = "0947-6539",

publisher = "Wiley-VCH Verlag",

number = "19",

}

RIS

TY - JOUR

T1 - Tetraammineplatinum(II) and Tetraamminepalladium(II) Chromates as Precursors of Metal Oxide Catalysts

AU - Filatov, Evgeny

AU - Lagunova, Varvara

AU - Potemkin, Dmitry

AU - Kuratieva, Natalia

AU - Zadesenets, Andrey

AU - Plyusnin, Pavel

AU - Gubanov, Alexander

AU - Korenev, Sergey

PY - 2020/4/1

Y1 - 2020/4/1

N2 - [M(NH3)4]A (M=Pt, Pd; A=CrO4, Cr2O7) and [Pt(NH3)4(NO2)(Cr2O7)]NO3 complex salts were synthesized and characterized by a number of physicochemical methods of analysis (IR, single-crystal and powder XRD, and simultaneous thermogravimetry and differential scanning calorimetry with evolved gas analysis mass spectrometry). Thermolysis of the salts obtained in a hydrogen atmosphere proceeds with the partial reduction of chromium to a metallic state and the formation of MxCr1−x (M=Pt, Pd) metal solid solution with a chromium content of up to 22 at % and chromium(III) oxide. The thermal decomposition of salts in an inert and oxidizing atmosphere passes through the formation stage of the MCrO2 phase with the delafossite structure followed by its subsequent decomposition into chromium(III) oxide and noble metal. Nanosized Pt−Cr2O3 and Pd−Cr2O3 composites obtained by the thermolysis of precursor salts in air at 500 °C and being held at this temperature for 1 h showed a high catalytic activity in the CO total oxidation (TOX) and preferential oxidation in the excess of hydrogen (PROX) processes compared with that of monometallic Pt and Pd powders.

AB - [M(NH3)4]A (M=Pt, Pd; A=CrO4, Cr2O7) and [Pt(NH3)4(NO2)(Cr2O7)]NO3 complex salts were synthesized and characterized by a number of physicochemical methods of analysis (IR, single-crystal and powder XRD, and simultaneous thermogravimetry and differential scanning calorimetry with evolved gas analysis mass spectrometry). Thermolysis of the salts obtained in a hydrogen atmosphere proceeds with the partial reduction of chromium to a metallic state and the formation of MxCr1−x (M=Pt, Pd) metal solid solution with a chromium content of up to 22 at % and chromium(III) oxide. The thermal decomposition of salts in an inert and oxidizing atmosphere passes through the formation stage of the MCrO2 phase with the delafossite structure followed by its subsequent decomposition into chromium(III) oxide and noble metal. Nanosized Pt−Cr2O3 and Pd−Cr2O3 composites obtained by the thermolysis of precursor salts in air at 500 °C and being held at this temperature for 1 h showed a high catalytic activity in the CO total oxidation (TOX) and preferential oxidation in the excess of hydrogen (PROX) processes compared with that of monometallic Pt and Pd powders.

KW - chromium

KW - homogeneous catalysis

KW - palladium

KW - platinum

KW - thermal decomposition

KW - PALLADIUM

KW - RU

KW - PERFORMANCE

KW - STABILITY

KW - CO

KW - PREFERENTIAL OXIDATION

KW - CR

KW - PD

KW - DOUBLE COMPLEX SALTS

KW - CELL

UR - http://www.scopus.com/inward/record.url?scp=85081666765&partnerID=8YFLogxK

U2 - 10.1002/chem.201905391

DO - 10.1002/chem.201905391

M3 - Article

C2 - 31990102

AN - SCOPUS:85081666765

VL - 26

SP - 4341

EP - 4349

JO - Chemistry - A European Journal

JF - Chemistry - A European Journal

SN - 0947-6539

IS - 19

ER -

ID: 23802552