Catalytic features of Rh and Ni supported catalysts in the steam reforming of glycerol to produce hydrogen

Chiodo, V.; Freni, S.; Galvagno, Antonio; Mondello, N.; Frusteri, F.

doi:10.1016/j.apcata.2010.03.039

Cited by 134 publications

(76 citation statements)

References 26 publications

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“…•수성가스이동반응 CO + H2O ↔ CO2 + H2 ΔH = -41 kJ mol -1 (2) •수증기 개질반응 C3H8O3 +3 H2O ↔ 3CO2 + 7H2 ΔH = 123 kJ mol -1 (3) 글리세롤 수증기 개질반응의 촉매로는 알루미나 또는 활성 탄 등에 담지 된 Ni [9], Co [10], Pt [11], Rh [12], Ru [13], Ir [14] 등의 전이금속 촉매들에 대한 연구가 최근에 보고되었다. …”

Section: 서 론unclassified

Glycerol Steam Reforming for Hydrogen Production on Metal-ceramic Core-shell CoAl₂O₄@Al Composite Structures

Kim¹,

Lee²

2015

Clean Technology

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주제어 : 코발트알루미네이트, 금속-세라믹 복합체, 불균일계촉매, 글리세롤 개질반응 Abstract : In this study, we investigated the structure and properties of a highly heat conductive metal-ceramic core-shell CoAl2O4@Al micro-composite for heterogeneous catalysts support. The CoAl2O4@Al was prepared by hydrothermal surface oxidation of Al metal powder, which resulted in the structure with a high heat conductive Al metal core encapsulated by a high surface area CoAl2O4 shell. For comparison, CoAl2O4 was also prepared by co-precipitation method and also utilized for a catalyst support. Rh catalysts supported on CoAl2O4@Al and CoAl2O4 were prepared by incipient wetness impregnation and characterized by N2 adsorption, X-ray diffraction (XRD), scanning electron microscopy (SEM), CO chemisorption, and temperature-programmed reduction (TPR). The properties of catalysts were investigated for glycerol steam reforming reaction for hydrogen production at 550 ℃. Rh/CoAl2O4@Al exhibited about 2.8 times higher glycerol conversion turnover frequency (TOF) than Rh/CoAl2O4 due to facilitated heat transport through the core-shell structure. The CoAl2O4@Al and CoAl2O4 also showed some catalytic activities due to a partial reduction of Co on the support, and a higher catalytic activity was also found on the CoAl2O4@Al core-shell than CoAl2O4. These catalysts, however, displayed deactivation on the reaction stream due to carbon deposition on the catalysts surface.

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Section: 서 론unclassified

Glycerol Steam Reforming for Hydrogen Production on Metal-ceramic Core-shell CoAl₂O₄@Al Composite Structures

Kim¹,

Lee²

2015

Clean Technology

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“…Some other side reactions can also take place, such as dehydration, dehydrogenation, cyclization, and polymerization, that lead to carbon deposition (Cheng et al 2010;Chiodo et al 2010). In the generally accepted mechanism of metal catalyzed glycerol steam reforming, the rate determining step is C-C .…”

Section: Catalytic Activity and Selectivitymentioning

confidence: 99%

Effect of Active Metal Supported on SiO2 for Selective Hydrogen Production from the Glycerol Steam Reforming Reaction

Charisiou¹,

Papageridis²,

Siakavelas³

et al. 2016

BioResources

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The performance of nickel, cobalt, and copper supported on silica as catalysts was evaluated for the glycerol steam reforming (GSR) reaction. The samples were characterized by nitrogen-porosimetry according to Brunauer-Emmett-Teller (BET) method, X-ray diffraction (XRD), and inductively coupled plasma atomic emission spectroscopy (ICP-AES), while the deposited carbon on the catalytic surface was measured with a CHN-analyzer. Catalysts were studied in order to investigate the effect of the reaction temperature on (i) glycerol total conversion, (ii) glycerol conversion to gaseous products, (iii) hydrogen selectivity and yield, (iv) selectivity of gaseous products, and (v) selectivity of liquid products. The results showed that the Ni based on silica (Ni/Si) catalyst was more active and produced less liquid effluents than the catalysts that used an active metal such as Co or Cu. Moreover, the H2 yield from the Ni/Si catalyst was very close to the theoretical maximum predicted by thermodynamics, and the CO2 production was favoured in comparison to CO production, which is important for use in fuel cells.

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“…Profeti et al [2009] using Ni/CeO 2 -Al 2 O 3 catalysts modified with noble metals (Pt, Ir, Pd, and Ru) explained the presence of them decreased the reduction temperatures of NiO species interacting with the support and stabilized the Ni sites in the reduced state along the reforming reaction, increasing conversion and decreasing coke formation. Finally, Chiodo et al [2010] stated that independently of metal (Rh and Ni) impregnated and temperature in the steam reforming, reaction is affected by coke formation mainly promoted by the presence of olefins formed by glycerol thermal decomposition. By thermodynamic reasons the hydrogen production should be favored at high temperature, but operating at higher than 923 K promotes the formation of encapsulated carbon which negatively reflects on catalyst stability.…”

Section: Catalysts Reaction Conditions and Deactivation Processesmentioning

confidence: 99%

“…The optimal temperature was 500ºC, at which the CO 2 breakthrough time is the longest and the H 2 purity is the highest. Chiodo et al [2010] investigated features of Rh and Ni supported catalysts in the steam reforming to produce syn-gas to feed a high-temperature fuel cell system; Rh/Al 2 O 3 resulted more active and stable than Ni supported catalysts. Operating conditions during the steam reforming of glycerol affect stability of Ni-supported catalysts, causing deactivation.…”

Section: Catalysts Reaction Conditions and Deactivation Processesmentioning

confidence: 99%

Glycerol, the Co-Product of Biodiesel: One Key for the Future Bio-Refinery

Comelli¹

2011

Biodiesel- Quality, Emissions and by-Products

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Catalytic features of Rh and Ni supported catalysts in the steam reforming of glycerol to produce hydrogen

Cited by 134 publications

References 26 publications

Glycerol Steam Reforming for Hydrogen Production on Metal-ceramic Core-shell CoAl₂O₄@Al Composite Structures

Glycerol Steam Reforming for Hydrogen Production on Metal-ceramic Core-shell CoAl₂O₄@Al Composite Structures

Effect of Active Metal Supported on SiO2 for Selective Hydrogen Production from the Glycerol Steam Reforming Reaction

Glycerol, the Co-Product of Biodiesel: One Key for the Future Bio-Refinery

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Catalytic features of Rh and Ni supported catalysts in the steam reforming of glycerol to produce hydrogen

Cited by 134 publications

References 26 publications

Glycerol Steam Reforming for Hydrogen Production on Metal-ceramic Core-shell CoAl2O4@Al Composite Structures

Glycerol Steam Reforming for Hydrogen Production on Metal-ceramic Core-shell CoAl2O4@Al Composite Structures

Effect of Active Metal Supported on SiO2 for Selective Hydrogen Production from the Glycerol Steam Reforming Reaction

Glycerol, the Co-Product of Biodiesel: One Key for the Future Bio-Refinery

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Product

Resources

About

Glycerol Steam Reforming for Hydrogen Production on Metal-ceramic Core-shell CoAl₂O₄@Al Composite Structures

Glycerol Steam Reforming for Hydrogen Production on Metal-ceramic Core-shell CoAl₂O₄@Al Composite Structures