Novel zirconia-supported catalysts for low-temperature oxidative steam reforming of ethanol

Bi, Jia-Lin; Hong, Yeh-Yeau; Lee, Chia-Chan; Yeh, Chien-Jui; Wang, Chen-Bin

doi:10.1016/j.cattod.2006.11.027

Cited by 59 publications

(26 citation statements)

References 50 publications

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“…It has been reported that low-temperature TPR peak (\140°C) of Ru species was assigned to the reduction of well-dispersed RuO x species, and the peak at somewhat higher temperature (about 200°C) was assigned to the reduction of well- [27] Handbook of X-ray Photoelectron Spectroscopy Fig. 2 HR-TEM images (a, b) and EDX spectra (c) of Ru-Re/ZrO 2 crystallized RuO 2 particles [30][31][32][33][34]. The weak and broad reduction peak at 456°C in the H 2 -TPR of Ru/ZrO 2 might be attributed to the interaction of Ru metal and ZrO 2 support [35].…”

Section: Characterization Of Catalystsmentioning

confidence: 99%

Hydrogenolysis of Glycerol to Propanediols Over Highly Active Ru–Re Bimetallic Catalysts

2009

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114

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Several supported Ru-Re bimetallic catalysts (Ru-Re/SiO 2 , Ru-Re/ZrO 2 , Ru-Re/TiO 2 , Ru-Re/H-b, Ru-Re/H-ZSM5) and Ru monometallic catalysts (Ru/SiO 2 , Ru/ZrO 2 , Ru/TiO 2 , Ru/H-b, Ru/H-ZSM5) were prepared and their catalytic performances were evaluated in the hydrogenolysis of glycerol to propanediols (1,2-propanediol and 1,3-propanediol) with a batch type reactor (autoclave) under the reaction conditions of 160°C, 8.0 MPa and 8 h. Compared with Ru monometallic catalysts, the Ru-Re bimetallic catalysts showed much higher activity in the hydrogenolysis of glycerol, and Re exhibited obvious promoting effect on the performance of the catalysts. The supported Ru monometallic catalysts and Ru-Re bimetallic catalysts were characterized by N 2 adsorption/desorption, XRD, TEM-EDX, H 2 -TPR and CO chemisorption for obtaining some physicochemical properties of the catalysts, such as specific surface areas, crystal phases, morphologies/microstructure, reduction behaviors and dispersion of Ru metal. The results of XRD and CO chemisorption indicate that the addition of Re component could improve the dispersion of Ru species on supports. The measurements of H 2 -TPR revealed that the coexistence of Re and Ru components on supports changed the respective reduction behavior of Re or Ru alone on the supports, indicating the existence of synergistic effect between Ru and Re species on the bimetallic catalysts. The hydrogenolysis of some products (such as 1,2-propanediol, 1,3-propanediol, 1-propanol and 2-propanol) were also examined over Ru and Ru-Re catalysts for evaluating influence of Re-Re on the reaction routes during glycerol hydrogenolysis. The results showed that over Ru-Re catalysts, glycerol was favorable to be converted to 1,2-propanediol, but not favorable to ethylene glycol, while 1,2-propanediol and 1,3-propanediol were favorable to be converted to 1-propanol. The influence of glycerol concentration in its aqueous solution on the catalytic performance was also evaluated over Ru and Ru-Re catalysts.

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Section: Characterization Of Catalystsmentioning

confidence: 99%

Hydrogenolysis of Glycerol to Propanediols Over Highly Active Ru–Re Bimetallic Catalysts

2009

Top Catal

114

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“…Many of these studies have focused on noble metal catalysts such as Rh, Ru, Pd, Pt, Re, Au, and Ir [1][2][3][4][5][6], reporting high activity for ethanol steam reforming in a wide range of temperatures (350-800°C) and gas hourly space velocities (GHSV: 5,000-300,000 h -1 ). High activity is often related to the C-C bond cleavage capability of the active metal [7].…”

Section: Introductionmentioning

confidence: 99%

Novel Synthesis Techniques for Preparation of Co/CeO2 as Ethanol Steam Reforming Catalysts

2009

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Novel synthesis methods such as solvothermal decomposition, colloidal crystal templating, and reverse microemulsion have been used to prepare CeO 2 -supported Co catalysts. These catalysts have shown much better catalytic performance than the catalysts prepared using conventional incipient wetness impregnation for Ethanol Steam Reforming. The improvement can be attributed to a better cobalt dispersion and a better Co-CeO 2 interaction for the catalysts prepared using these novel methods.

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“…Therefore, the design of bimetallic catalysts, based on the properties noble metals offer, has been pursued and has given promising results. 17,34,35 The Pt-Rh bimetallic catalyst has a high activity, is less susceptible to coke formation (when compared with nickel-based catalysts), and can easily be regenerated if coke formation does occur. This catalyst is also tolerant to sulfur, which is important for reforming ethanol contaminated with thio-bearing compounds.…”

Section: Catalysts Based On Rh-ptmentioning

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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Novel zirconia-supported catalysts for low-temperature oxidative steam reforming of ethanol

Cited by 59 publications

References 50 publications

Hydrogenolysis of Glycerol to Propanediols Over Highly Active Ru–Re Bimetallic Catalysts

Hydrogenolysis of Glycerol to Propanediols Over Highly Active Ru–Re Bimetallic Catalysts

Novel Synthesis Techniques for Preparation of Co/CeO2 as Ethanol Steam Reforming Catalysts

Advances in Ethanol Reforming for the Production of Hydrogen

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