(NH4)AgMoS4: Synthesis, structure and catalytic activity

Maryam Shafaei-Fallah; Christos D. Malliakas; Mercouri G. Kanatzidis

doi:10.1002/zaac.201200309

(NH₄)AgMoS₄: Synthesis, structure and catalytic activity

Maryam Shafaei-Fallah^*, Christos D. Malliakas, Mercouri G. Kanatzidis

^*Corresponding author for this work

Chemistry

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

4 Scopus citations

Abstract

The synthesis, characterization and crystal structure of (NH ₄)AgMoS₄ is presented. (NH₄)AgMoS₄ was prepared by the stoichiometric reaction of AgNO₃ with (NH ₄)₂MoS₄. The black microcrystalline (NH ₄)AgMoS₄ is thermally unstable and contaminated by a phase that analyzes for Ag₂MoS₄. In the TGA continuous weight loss was observed corresponding to the loss of ammonia gas subsequent loss of sulfur and H₂S to give Ag₂S and MoS₂. In the infrared spectrum of (NH₄)AgMoS₄, characteristic bands for the ammonium ion at 1350-1400 cm^-1 and for the [MoS ₄]^2- group at 460 cm^-1 are observed. Crystals of (NH₄)AgMoS₄ were investigated using a synchroton source. (NH₄)AgMoS₄ is isostructural to (NH ₄)CuMoS₄ and crystallizes in the tetragonal space group I4 (Z = 2, a = 7.8740(3), c = 5.7733(4) Å). (NH₄)AgMoS ₄ can be used as a catalyst in the syngas conversion to higher alcohols with showing good activity and ethanol selectivity.

Original language	English (US)
Pages (from-to)	2594-2597
Number of pages	4
Journal	Zeitschrift fur Anorganische und Allgemeine Chemie
Volume	638
Issue number	15
DOIs	https://doi.org/10.1002/zaac.201200309
State	Published - Dec 2012

Keywords

Alcohol synthesis
Heterogeneous catalysis
Syngas conversion
Thiomolybdates

ASJC Scopus subject areas

Inorganic Chemistry

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10.1002/zaac.201200309

Cite this

@article{710b2e0218b84b038dfaad338e0da3f0,

title = "(NH4)AgMoS4: Synthesis, structure and catalytic activity",

abstract = "The synthesis, characterization and crystal structure of (NH 4)AgMoS4 is presented. (NH4)AgMoS4 was prepared by the stoichiometric reaction of AgNO3 with (NH 4)2MoS4. The black microcrystalline (NH 4)AgMoS4 is thermally unstable and contaminated by a phase that analyzes for Ag2MoS4. In the TGA continuous weight loss was observed corresponding to the loss of ammonia gas subsequent loss of sulfur and H2S to give Ag2S and MoS2. In the infrared spectrum of (NH4)AgMoS4, characteristic bands for the ammonium ion at 1350-1400 cm-1 and for the [MoS 4]2- group at 460 cm-1 are observed. Crystals of (NH4)AgMoS4 were investigated using a synchroton source. (NH4)AgMoS4 is isostructural to (NH 4)CuMoS4 and crystallizes in the tetragonal space group I4 (Z = 2, a = 7.8740(3), c = 5.7733(4) {\AA}). (NH4)AgMoS 4 can be used as a catalyst in the syngas conversion to higher alcohols with showing good activity and ethanol selectivity.",

keywords = "Alcohol synthesis, Heterogeneous catalysis, Syngas conversion, Thiomolybdates",

author = "Maryam Shafaei-Fallah and Malliakas, {Christos D.} and Kanatzidis, {Mercouri G.}",

year = "2012",

month = dec,

doi = "10.1002/zaac.201200309",

language = "English (US)",

volume = "638",

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journal = "Zeitschrift fur Anorganische und Allgemeine Chemie",

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TY - JOUR

T1 - (NH4)AgMoS4

T2 - Synthesis, structure and catalytic activity

AU - Shafaei-Fallah, Maryam

AU - Malliakas, Christos D.

AU - Kanatzidis, Mercouri G.

PY - 2012/12

Y1 - 2012/12

N2 - The synthesis, characterization and crystal structure of (NH 4)AgMoS4 is presented. (NH4)AgMoS4 was prepared by the stoichiometric reaction of AgNO3 with (NH 4)2MoS4. The black microcrystalline (NH 4)AgMoS4 is thermally unstable and contaminated by a phase that analyzes for Ag2MoS4. In the TGA continuous weight loss was observed corresponding to the loss of ammonia gas subsequent loss of sulfur and H2S to give Ag2S and MoS2. In the infrared spectrum of (NH4)AgMoS4, characteristic bands for the ammonium ion at 1350-1400 cm-1 and for the [MoS 4]2- group at 460 cm-1 are observed. Crystals of (NH4)AgMoS4 were investigated using a synchroton source. (NH4)AgMoS4 is isostructural to (NH 4)CuMoS4 and crystallizes in the tetragonal space group I4 (Z = 2, a = 7.8740(3), c = 5.7733(4) Å). (NH4)AgMoS 4 can be used as a catalyst in the syngas conversion to higher alcohols with showing good activity and ethanol selectivity.

AB - The synthesis, characterization and crystal structure of (NH 4)AgMoS4 is presented. (NH4)AgMoS4 was prepared by the stoichiometric reaction of AgNO3 with (NH 4)2MoS4. The black microcrystalline (NH 4)AgMoS4 is thermally unstable and contaminated by a phase that analyzes for Ag2MoS4. In the TGA continuous weight loss was observed corresponding to the loss of ammonia gas subsequent loss of sulfur and H2S to give Ag2S and MoS2. In the infrared spectrum of (NH4)AgMoS4, characteristic bands for the ammonium ion at 1350-1400 cm-1 and for the [MoS 4]2- group at 460 cm-1 are observed. Crystals of (NH4)AgMoS4 were investigated using a synchroton source. (NH4)AgMoS4 is isostructural to (NH 4)CuMoS4 and crystallizes in the tetragonal space group I4 (Z = 2, a = 7.8740(3), c = 5.7733(4) Å). (NH4)AgMoS 4 can be used as a catalyst in the syngas conversion to higher alcohols with showing good activity and ethanol selectivity.

KW - Alcohol synthesis

KW - Heterogeneous catalysis

KW - Syngas conversion

KW - Thiomolybdates

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