Steam reforming of bio-ethanol on alkali-doped Ni/MgO catalysts: hydrogen production for MC fuel cell

Frusteri, F.; Freni, S.; Chiodo, V.; Spadaro, Lorenzo; Blasi, O. Di; Bonura, Giuseppe; Cavallaro, S.

doi:10.1016/j.apcata.2004.03.052

Cited by 222 publications

(99 citation statements)

References 19 publications

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“…Ni/Y 2 O 3 and Ni/La 2 O 3 catalyst exhibited relatively higher activity in terms of ethanol conversion and hydrogen selectivity whereas Ni/Al 2 O 3 was the least active. Frusteri et al [10,11] studied the steam reforming of bioethanol over Ni/MgO and Ni/CeO 2 . Fatsikostas and Verykios [12] investigated ethanol reforming over Ni catalysts supported on c-Al 2 O 3 , La 2 O 3 and La 2 O 3 /c-Al 2 O 3 .…”

Section: Introductionmentioning

confidence: 99%

“…Very limited information is available on the effect of dopants during SR of ethanol. Frusteri et al [10,11] studied the effect of alkali (Na, K, Li) addition on the behavior of Ni/MgO catalysts. Li and Na promoted the NiO reduction but negatively affected the dispersion of the Ni/MgO catalyst, whereas K did not significantly affect either the morphology or dispersion.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Steam reforming of ethanol on Ni–CeO2–ZrO2 catalysts: Effect of doping with copper, cobalt and calcium

Biswas

Kunzru

2007

Catal Lett

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Steam reforming (SR) and oxidative steam reforming (OSR) of ethanol were investigated over undoped and Cu, Co and Ca doped Ni/CeO 2 -ZrO 2 catalyst in the temperature range of 400-650°C. The nickel loading was kept fixed at 30 wt.% and the loading of Cu and Co was varied from 2 to 10 wt% whereas the Ca loading was varied from 5 to 15 wt.%. The catalysts were characterized by various techniques, such as surface area, temperature programmed reduction, X-Ray diffraction and H 2 chemisorption. For Cu and Co doped catalyst, CuO and Co 3 O 4 phases were detected at high loading whereas for Ca doped catalyst, no separate phase of CaO was found. The reducibility and the metal support interactions were different for doped catalysts and varied with the amount and nature of dopants. The hydrogen uptake, nickel dispersion and nickel surface area was reduced with the metal loading and for the Co loaded catalysts the dispersion of Ni and nickel surface area was very low. For Cu and Ca doped catalysts, the activity was increased significantly and the main products were H 2 , CO, CH 4 and CO 2 . However, the Co doped catalysts showed poor activity and a relatively large amount of C 2 H 4 , C 2 H 6 , CH 3 CHO and CH 3 COCH 3 were obtained. For SR, the maximum enhancement in catalytic activity was obtained with in the order of NCu5. For Cu-Ni catalysts, CH 3 CHO decomposition and reforming reaction was faster than ethanol dehydrogenation reaction. Addition of Cu and Ca enhanced the water gas shift (WGS) and acetaldehyde reforming reactions, as a result the selectivity to CO 2 and H 2 were increased and the selectivity to CH 3 CHO was reduced significantly. The maximum hydrogen selectivity was obtained for Catalyst N (93.4%) at 650°C whereas nearly the same selectivity to hydrogen (89%) was obtained for NCa10 catalyst at 550°C. In OSR, the catalytic activity was in the order N > NCu5 > NCa15 > NCo5. In the presence of oxygen, oxidation of ethanol was appreciable together with ethanol dehydrogenation. For SR reaction, the highest hydrogen yield was obtained on the undoped catalyst at 600°C. However, with calcium doping the hydrogen yields are higher than the undoped catalyst in the temperature range of 400-550°C.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Steam reforming of ethanol on Ni–CeO2–ZrO2 catalysts: Effect of doping with copper, cobalt and calcium

Biswas

Kunzru

2007

Catal Lett

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“…An attractive alternative to hydrogen production is the ethanol steam reforming [2][3][4][5][6][7][8][9][10][11][12][13][14][15]. Ethanol has several advantages compared to other raw materials but the most important is its renewable origin and the consequent reduction in CO 2 emission.…”

Section: Introductionmentioning

confidence: 99%

Reactivity of Aluminum Spinels in the Ethanol Steam Reforming Reaction

et al. 2006

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Aluminum spinels, MAl 2 O 4 with M 2+ = Cu, Zn or Ni, were prepared by citrate method and its reactivity in the ethanol steam reforming reaction was studied at 500°C. They were characterized by TG, BET surface area, XRD, FTIR and TPR techniques. The catalytic behavior depended strongly on the nature of divalent metal which determines the physico-chemical properties of samples. In all cases, very active catalysts with a complete ethanol conversion were reached. Hydrogen yield follows the order of ZnAl > NiAl > CuAl.

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“…Akiyama et al 40 found that the Ni/ZrO 2 catalyst doped with Cs yields higher levels of H 2 when compared with the catalyst that is doped with Li, K, La, or Ce. In similar studies, Frusteri et al 41 prepared a Ni/MgO catalyst and added Li, Na, or K and found that the Li and Na promote NiO reduction but negatively influence the dispersion of the supported catalyst whereas addition of K does not affect the morphology or dispersion significantly. Li and K increase the stability of Ni/MgO by decreasing Ni sintering.…”

Section: Catalysts Based On Nimentioning

confidence: 99%

“…Better catalytic activity is observed for catalysts that are doped when compared to those that are not. [26][27][28]41,46,48 The effect of the metal dopant can be related to disposition, area, and dispersion of the active phase, parameters that usually affect changes in the selectivity and conversion. 53 Although most investigators seek to obtain better results by using a metal dopant with different characteristics than the catalyst, such enhancements in activity is not always observed.…”

Section: Comparison Of the Catalytic Systemsmentioning

confidence: 99%

Advances in Ethanol Reforming for the Production of Hydrogen

2014

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Catalytic steam reforming of ethanol (SRE) is a promising route for the production of renewable hydrogen (H 2 ). This article reviews the influence of doping supported-catalysts used in SRE on the conversion of ethanol, selectivity for H 2 , and stability during long reaction periods. In addition, promising new technologies such as membrane reactors and electrochemical reforming for performing SRE are presented.

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Steam reforming of bio-ethanol on alkali-doped Ni/MgO catalysts: hydrogen production for MC fuel cell

Cited by 222 publications

References 19 publications

Steam reforming of ethanol on Ni–CeO2–ZrO2 catalysts: Effect of doping with copper, cobalt and calcium

Steam reforming of ethanol on Ni–CeO2–ZrO2 catalysts: Effect of doping with copper, cobalt and calcium

Reactivity of Aluminum Spinels in the Ethanol Steam Reforming Reaction

Advances in Ethanol Reforming for the Production of Hydrogen

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