Characterization and catalytic activity of copper/alumina methanol synthesis catalysts

Robinson, W.R.A.M.; Mol, J.C.

doi:10.1016/s0166-9834(00)80051-2

Cited by 46 publications

(17 citation statements)

References 8 publications

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“…However, this (fig. S8) and other studies [24,27] observe no such correlation for CO hydrogenation in good agreement with the limited ability of the metallic Cu surface to form methanol from CO (fig. 1).…”

Section: Resultssupporting

confidence: 86%

Bifunctional Synergy in CO Hydrogenation to Methanol with Supported Cu

et al. 2019

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Section: Resultssupporting

confidence: 86%

Bifunctional Synergy in CO Hydrogenation to Methanol with Supported Cu

et al. 2019

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“…The use of the TPR technique for species identification in impregnated CuO/A1203 Catalysts has been reported by Agaras et al (1988) and Robinson and Mol (1988). These authors observed only CuO and CuAl204 species for various copper loadings and catalyst calcination temperatures.…”

Section: Specieso M(oh)a (N); M(oh)cos (N) Al(oh)s (N); Ai(oh)cos (N)mentioning

confidence: 91%

Production of Hydrogen from Methanol. Part 1. Catalyst Characterization Studies

Idem¹,

Bakhshi²

1994

Ind. Eng. Chem. Res.

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Various Cu-A1 catalysts with copper concentration ranging from 0 to 57.3 w t % were prepared by coprecipitation techniques for the production of H2 from methanol. These catalysts were calcined at various temperatures and then reduced in H2 at 300 "C. The catalysts were characterized thoroughly at appropriate stages of preparation. Results show that the dried catalysts contained crystalline species such as Cuz(OH)zC03 and Cu(OH)2 and noncrystalline species such as Al(OH)C03, Al(OH)3, and Cuz(OH)2C03. Their proportions and thermal stability depended on copper concentration.Calcined catalysts contained Cu2(0H)2C03, CuO, Cu20, and CuAlzO4 reducible species, Their proportions, reducibilities, and extents of reduction with hydrogen depended strongly on copper concentration and calcination temperature. The acid site distribution on calcined catalysts varied drastically with copper concentration and calcination temperature. On the other hand, BET surface area and pore structure depended not only on copper concentration and calcination temperature but also whether the catalyst was reduced or unreduced.Hydrogen is consumed in large quantities in many industrial applications. Currently, it is being seriously considered for use commercially as an energy vector such as in fuel cells and mobile vehicles due to its high efficiency, and also for environmental reasons (Uehara, 1992). It is

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“…As the promoter manganese concentration in the catalyst was increased, the peaks of CuAl 2 O 4 and CuMnO 2 showed an increase in intensity, while the peak intensity of CuO dropped. Cu 2 O, CuO and CuAl 2 O 4 were also identified for copper catalysts by Idem and Bakhshi [14], and Robinson and Mol [15] using TPR and XRD characterization techniques.…”

Section: Catalyst Characterizationmentioning

confidence: 92%

Low-temperature water-gas shift reaction over Mn-promoted Cu/Al2O3 catalysts

2006

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Water-gas-shift reaction was carried our over a series of Mn-promoted Cu/Al 2 O 3 catalysts in the temperature range of 448-533 K. The catalysts were characterized suitably by various techniques. The catalyst containing 8.55 wt% Mn was found to be the most active one among five catalysts tested. A maximum CO conversion of 90% was obtained over this catalyst at 513 K with a CO space-time of 5.33 h. The catalysts were found to be structure sensitive for the low-temperature water-gas shift reaction. A detailed kinetic study was performed for the reaction under investigation over the best catalyst. The kinetic data were fitted to two different models and the redox model was found to the better one than the other. From the estimated kinetic constant, the activation energy was determined to be 81 kJ/mol for the water-gas shift reaction in the temperature range of 448-463 K.

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Characterization and catalytic activity of copper/alumina methanol synthesis catalysts

Cited by 46 publications

References 8 publications

Bifunctional Synergy in CO Hydrogenation to Methanol with Supported Cu

Bifunctional Synergy in CO Hydrogenation to Methanol with Supported Cu

Production of Hydrogen from Methanol. Part 1. Catalyst Characterization Studies

Low-temperature water-gas shift reaction over Mn-promoted Cu/Al2O3 catalysts

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