Efficient H2 Production from Ethanol over Mo2C/C Nanotube Catalyst

Barthos, Róbert; Széchenyi, Aleksandar; Solymosi, F.

doi:10.1007/s10562-007-9265-8

Cited by 41 publications

(36 citation statements)

References 45 publications

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“…[20] DME is also considered as a potential fuel for the generation of hydrogen. [21][22][23][24][25][26][27][28] Recently, we reported that Mo 2 C prepared on carbon Norit is an effective and stable catalyst, not only in the reforming of ethanol [29,30] and methanol, [31,32] but also for the production of hydrogen from DME. [33] On 10 % Mo 2 C/Norit, complete conversion of dimethyl ether was attained at 873-923 K. Adding water to DME slightly improved the production of hydrogen.…”

Section: Introductionmentioning

confidence: 99%

Production of Hydrogen from Dimethyl Ether over Supported Rhodium Catalysts

2009

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Infrared (IR) spectroscopy revealed that dimethyl ether (DME) undergoes partial dissociation on pure and rhodium‐containing CeO2 at 300 K to yield methoxy and methyl species. This process is promoted by the presence of rhodium. By means of thermal desorption measurements (TPD), the adsorption of DME on Rh/CeO2 at 300 K and subsequent decomposition of DME (Tp≈370 K), releasing H2, CO, CO2, and CH4, with Tp between 420 and 673 K, were ascertained. Rh/CeO2 is an effective catalyst for the decomposition of DME to give H2 (29–35 %), CO (27–30 %) and CH4 (32–38 %) as major products with complete conversion at 673–723 K. Adding water to DME changed the product distribution and increased the selectivity of H2 formation from 30–35 % to 58 % at 723 K. In situ IR spectroscopy showed absorption bands of CO at 2034 and 1893 cm−1 during the reaction at 673–773 K. Deactivation of the catalyst did not occur at 773 K during the time measured (approximately 10 h). Rh deposited on carbon Norit also exhibited a high activity towards the decomposition of DME, but the selectivity towards hydrogen was lower.

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Section: Introductionmentioning

confidence: 99%

Production of Hydrogen from Dimethyl Ether over Supported Rhodium Catalysts

2009

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“…Catalytic reaction was carried out at 1 atm of pressure in a fixed-bed, continuous flow reactor made of a quartz tube (8 mm id) [9,10]. The flow rate was in general 60 mL/min.…”

Section: Methodsmentioning

confidence: 99%

“…Platinumgroup metals are the commonly used catalysts for the decomposition and reforming of alcohols [1][2][3][4][5][6]. Recently we found that Mo 2 C prepared by the reaction of MoO 3 with multiwall carbon nanotube and activated carbon Norit is also an excellent catalyst for the decomposition and reforming of oxygenated compounds such as methanol [7,8], ethanol [9,10] and dimethyl ether [11]. An important property of the Mo 2 C/C is its high stability, which means that the conversions and the H 2 yields decreased only by few percents even after 30-75 h of reaction at 673-773 K.…”

Section: Introductionmentioning

confidence: 99%

Hydrogen Formation in the Reactions of Methanol on Supported Au Catalysts

2009

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The adsorption and reactions of methanol have been investigated on Au metal supported by various oxides and carbon Norit of high surface area. Infrared spectroscopic studies revealed the dissociation of methanol at 300 K, which mainly occurs on the oxide-supports yielding methoxy species. The presence of Au already appeared in the increased amounts of desorbed products in the TPD spectra. The reaction pathway of the decomposition and the activity of the catalyst sensitively depend on the nature of the support. As regards the production of hydrogen the most effective catalyst is Au/CeO 2 followed

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“…Catalytic reaction was carried out at 1 atm of pressure in a fixed-bed, continuous flow reactor made of a quartz tube (8 mm id) [21,22]. The flow rate was in general 40 mL/min.…”

Section: Methodsmentioning

confidence: 99%

“…Recently we reported that Mo 2 C prepared by the reaction of MoO 3 with multiwall carbon nanotube and activated carbon Norit is an excellent catalyst for the decomposition of ethanol to H 2 [21,22]. This solid was also effective in the decomposition/reforming of methanol [23] and dimethyl ether [24].…”

Section: Introductionmentioning

confidence: 99%

A Comparative Study of the Decomposition of Ethanol on Pt Metals Supported by Carbon

2009

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The decomposition of ethanol has been investigated on Pt metals supported by carbon Norit of high surface area. The reaction starts above 450 K and approaches total conversion at 673-723 K. The major products are H 2 , CO and CH 4 . The selectivity of hydrogen formation on all metals supported by carbon Norit scattered around 30%, and almost *40% of the hydrogen content of ethanol has been converted to gaseous hydrogen at the total conversion. The order of the efficiency of the metals based on the turnover frequencies is RuAn advantageous feature of the Norit-supported Pt metals is that no deactivation occurred at 723 K in 10 h, which is in contrast to the behaviour of Pt/Al 2 O 3 . The high stability of the catalysts is attributed to the lack of reactive OH groups required for the formation of acetate poisoning the metals. Adding water to ethanol only slightly improved the production of hydrogen.

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Efficient H2 Production from Ethanol over Mo2C/C Nanotube Catalyst

Cited by 41 publications

References 45 publications

Production of Hydrogen from Dimethyl Ether over Supported Rhodium Catalysts

Production of Hydrogen from Dimethyl Ether over Supported Rhodium Catalysts

Hydrogen Formation in the Reactions of Methanol on Supported Au Catalysts

A Comparative Study of the Decomposition of Ethanol on Pt Metals Supported by Carbon

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