Conversion of syngas to higher alcohols over nanosized LaCo0.7Cu0.3O3 perovskite precursors

Thảo, Nguyễn Tiến; Zahedi-Niaki, M. Hassan; Alamdari, Houshang; Kaliaguine, Serge

doi:10.1016/j.apcata.2007.04.009

Cited by 93 publications

(107 citation statements)

References 61 publications

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“…[1][2][3][4][5][6][7][8][9][10][11][12] The literature focuses on differently-supported and promoted Rh and Mo catalysts as well as modified Cu-based methanol synthesis catalysts and modified Fischer-Tropsch catalysts. Two excellent reviews on heterogeneous catalysts for the synthesis of higher alcohols from syngas have recently appeared.…”

Section: Introductionmentioning

confidence: 99%

X‐ray Absorption Spectroscopy of an Fe‐Promoted Rh/TiO₂ Catalyst for Synthesis of Ethanol from Synthesis Gas

Gogate

Davis

2009

ChemCatChem

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X‐ray absorption near‐edge structure (XANES) and extended X‐ray absorption fine structure (EXAFS) have been used to elucidate the structural features of a 2 % Rh–2.5 % Fe/TiO2 catalyst for syngas conversion to ethanol. The results from Rh K‐edge and Fe K‐edge spectroscopy on a fresh catalyst exposed to air indicated that both Rh and Fe were present as highly dispersed oxides on the titania, and that both adopted a +3 formal oxidation state. For the catalyst reduced in H2 at 573 K, the Rh K‐edge EXAFS revealed RhRh interactions (coordination number N=6.1, RhRh distance rRhRh=2.67 Å) and a second feature arising from either RhTi or RhO coordination. The metal particles contained on an average about 20 atoms, which is consistent with a particle size of 1 nm. A shift in the Rh K‐edge XANES by −2 eV indicated that the reduced Rh particles were electron rich compared to bulk Rh metal. Although Rh was reduced completely to the metal by H2, the iron oxide promoter was reduced primarily from FeIII to FeII oxide. The results from X‐ray absorption spectroscopy at both the Fe and Rh K‐edges were unchanged by exposure of the reduced catalyst to syngas (H2+CO) at 543 K. A structural model for this ethanol synthesis catalyst is proposed.

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Section: Introductionmentioning

confidence: 99%

X‐ray Absorption Spectroscopy of an Fe‐Promoted Rh/TiO₂ Catalyst for Synthesis of Ethanol from Synthesis Gas

Gogate

Davis

2009

ChemCatChem

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“…18 Entre eles, o cobre foi considerado o mais promissor, pois aumenta significativamente a atividade catalítica da magnetita. 19 As principais reações envolvidas no processo são:…”

Section: Processo Fischer-tropschunclassified

Óxidos de ferro e suas aplicações em processos catalíticos: uma revisão

Oliveira¹,

Fabris²,

Pereira³

2013

Quím. Nova

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“…Very recently, other new catalysts were also developed and a good activity and selectivity could also be obtained. For instance, Kaliaguine et al [14,15] reported conversion of syngas to higher alcohols over nanocrystalline Co-Cubased perovskites as catalysts, and Xiang et al [16,17] reported synthesis of higher alcohols from syngas over Fischer-Tropsch elements modified molybdenum carbides. However, up to now, from the viewpoint of practical use, among various catalysts, alkali-doped MoS 2 catalysts are still considered the most promising due to their resistance to sulfur poisoning and high activity for the water-gas shift reaction.…”

Section: Introductionmentioning

confidence: 98%

Effect of Lanthanum Promotion on the Unsupported Mo–Co–K Sulfide Catalysts for Synthesis of Mixed Alcohols from Syngas

et al. 2008

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The unsupported Mo-Co-K sulfide catalysts promoted by La were prepared through ultrasonic technology in non-aqueous medium and its performances for the synthesis of mixed alcohols from syngas were also investigated. The results showed that the catalysts promoted by La exhibited higher CO conversion and selectivity to ethanol than the unsupported Mo-Co-K sulfide catalyst without addition of La did under identical reaction conditions. The catalysts were characterized by N 2 adsorption/ desorption, X-ray diffraction (XRD), Scanning electron microscope (SEM), Transmission electron microscope (TEM), Raman, and X-ray photoelectron spectroscopy (XPS).

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Conversion of syngas to higher alcohols over nanosized LaCo0.7Cu0.3O3 perovskite precursors

Cited by 93 publications

References 61 publications

X‐ray Absorption Spectroscopy of an Fe‐Promoted Rh/TiO₂ Catalyst for Synthesis of Ethanol from Synthesis Gas

X‐ray Absorption Spectroscopy of an Fe‐Promoted Rh/TiO₂ Catalyst for Synthesis of Ethanol from Synthesis Gas

Óxidos de ferro e suas aplicações em processos catalíticos: uma revisão

Effect of Lanthanum Promotion on the Unsupported Mo–Co–K Sulfide Catalysts for Synthesis of Mixed Alcohols from Syngas

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Conversion of syngas to higher alcohols over nanosized LaCo0.7Cu0.3O3 perovskite precursors

Cited by 93 publications

References 61 publications

X‐ray Absorption Spectroscopy of an Fe‐Promoted Rh/TiO2 Catalyst for Synthesis of Ethanol from Synthesis Gas

X‐ray Absorption Spectroscopy of an Fe‐Promoted Rh/TiO2 Catalyst for Synthesis of Ethanol from Synthesis Gas

Óxidos de ferro e suas aplicações em processos catalíticos: uma revisão

Effect of Lanthanum Promotion on the Unsupported Mo–Co–K Sulfide Catalysts for Synthesis of Mixed Alcohols from Syngas

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Product

Resources

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X‐ray Absorption Spectroscopy of an Fe‐Promoted Rh/TiO₂ Catalyst for Synthesis of Ethanol from Synthesis Gas

X‐ray Absorption Spectroscopy of an Fe‐Promoted Rh/TiO₂ Catalyst for Synthesis of Ethanol from Synthesis Gas