Direct conversion of ethanol into ethylene oxide on gold-based catalystsEffect of CeOx and Li2O addition on the selectivity

Lippits, M.J.; Nieuwenhuys, B.E.

doi:10.1016/j.jcat.2010.06.011

Cited by 36 publications

(34 citation statements)

References 22 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Over the past decades, catalysis of supported transition-metal nanoparticles has been striking, and received more attention for numerous reactions [1][2][3][4][5]. The use of transition-metal nanoparticles in catalysis is crucial as they mimic metal surface activation and catalysis at the nanoscale and thereby bring selectivity and efficiency to heterogeneous catalysis, which benefits from easy removal of catalyst materials [6].…”

Section: Introductionmentioning

confidence: 99%

Kinetics of the catalytic oxidation of morin on γ-Al 2 O 3 supported gold nanoparticles and determination of gold nanoparticles surface area and sizes by quantitative ligand adsorption

Ndolomingo

Meijboom

2016

Applied Catalysis B: Environmental

View full text Add to dashboard Cite

Section: Introductionmentioning

confidence: 99%

Kinetics of the catalytic oxidation of morin on γ-Al 2 O 3 supported gold nanoparticles and determination of gold nanoparticles surface area and sizes by quantitative ligand adsorption

Ndolomingo

Meijboom

2016

Applied Catalysis B: Environmental

View full text Add to dashboard Cite

“…It is noteworthy that, in the presence of oxygen, the intrinsic activity of Au/SiO 2 increased considerably. Lippits and Nieuwenhuys [41] investigated the conversion of ethanol into ethylene oxide on gold-based catalysts. It was found that when gold was added to the Al 2 O 3 support the catalyst produced ethylene oxide which was not observed on the support alone.…”

Section: Introductionmentioning

confidence: 99%

Structure and reactivity of Au–Rh bimetallic clusters on titanate nanowires, nanotubes and TiO2(110)

et al. 2012

View full text Add to dashboard Cite

a b s t r a c tAu and Rh clusters, as well as Au-Rh bimetallic nanoparticles were prepared on titanate nanowires, nanotubes and on TiO 2 (1 1 0). They were characterized by X-ray photoelectron spectroscopy (XPS), low energy ion scattering spectroscopy (LEIS) and Fourier transform infrared spectroscopy (FTIR). By performing careful LEIS experiments, it was found that for appropriate Au and Rh coverage, a thin Au layer almost completely covers the Rh nanoparticles, a Rh core-Au shell structure was detected. The formation of this structure was not affected by alkali (K) adatoms. LEIS and FTIR measurements disclosed that adsorbed CO at 300 K causes the segregation of Rh atoms to the surface of metal clusters in order to bind to CO. Upon CO adsorption on Rh/titanate nanostructures the IR stretching frequencies characteristic of the twin form were dominant, whereas bimetallic nanosystems featured a pronounced linear stretching vibration as well. In spite of this structure adsorbed CO is detectable during the ethanol adsorption on gold-rhodium bimetallic cluster and the ethanol decomposition rate is twice higher than on Au/TiO 2 .

show abstract

“…An interesting gold catalyst is Au/Li 2 O/Al 2 O 3 which produce ethylene oxide at a selectivity of 88% under low O 2 concentration of O 2 /EtOH = 1 [41]. Figure 9 shows the conversion and ethylene oxide selectivity for Ib metals supported on Li 2 O/Al 2 O 3 .…”

Section: Goldmentioning

confidence: 99%

“…Comparison of conversion of ethanol and selectivities into ethylene oxide among Ib metal catalysts[41].Filled symbol 473 K, semi-open symbol 573 K, open symbol 673 K. Reaction conditions EtOH/O 2 = 1, Ar balance, GHSV &2,500 h -1 Fig. 10 Support effect on product selectivity in gas phase oxidation of ethanol over Au catalysts…”

mentioning

confidence: 99%

Synthesis of Acetoaldehyde, Acetic Acid, and Others by the Dehydrogenation and Oxidation of Ethanol

2011

View full text Add to dashboard Cite

Following gradual shift of primary resources from fossil towards renewable ones in chemical industry, biomass based ethanol has been attracting growing interests as a fuel to replace gasoline and as a chemical feed stock to replace ethylene. This paper reviews major work reported in the last 10 years for the production of acetaldehyde, acetic acid, and other related compounds from ethanol. At present acetic acid can be industrially produced more economically from methanol than from ethylene, the production of acetic acid from ethanol is not profitable. Acetaldehyde, which is more expensive than ethanol, can be selectively produced in gas phase by dehydrogenation over supported Cu catalysts and by oxidation with O 2 over V and Mo based oxides. It is noteworthy that gold nanoparticles deposited on basic and acidic metal oxides are highly selective to acetaldehyde by oxidation with O 2 . Acetic acid can be produced in water solvent over Au catalysts supported on MgAl 2 O 4 or on Cu doped NiO, while in gas phase over Mo-V-Nb mixed oxides combined with TiO 2 colloids.

show abstract

Direct conversion of ethanol into ethylene oxide on gold-based catalystsEffect of CeOx and Li2O addition on the selectivity

Cited by 36 publications

References 22 publications

Kinetics of the catalytic oxidation of morin on γ-Al 2 O 3 supported gold nanoparticles and determination of gold nanoparticles surface area and sizes by quantitative ligand adsorption

Kinetics of the catalytic oxidation of morin on γ-Al 2 O 3 supported gold nanoparticles and determination of gold nanoparticles surface area and sizes by quantitative ligand adsorption

Structure and reactivity of Au–Rh bimetallic clusters on titanate nanowires, nanotubes and TiO2(110)

Synthesis of Acetoaldehyde, Acetic Acid, and Others by the Dehydrogenation and Oxidation of Ethanol

Contact Info

Product

Resources

About