Effect of temperature, steam-to-carbon ratio, and alkali metal additives on improving the sulfur tolerance of a Rh/La–Al2O3 catalyst reforming gasoline for fuel cell applications

Ferrandon, Magali; Mawdsley, Jennifer R.; Krause, Theodore

doi:10.1016/j.apcata.2008.03.001

Cited by 57 publications

(32 citation statements)

References 20 publications

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“…Mawdsley and Krause, 2006 [47] studied the use of a 2 wt% Rh/La-Al 2 O 3 catalyst in the ATR of sulfur-free and 34 ppm-S containing gasoline in the temperature range of 700 to 800 o C with molar S/C of 1.5 and molar O/C of 0.45. The authors reported that the activity of the catalyst is affected by the S content in the fuel.…”

Section: Al 2 O 3 Supported Catalystmentioning

confidence: 99%

Recent Advances in Hydrogen Production Via Autothermal Reforming Process (ATR): A Review of Patents and Research Articles

Nahar¹,

Dupont²

2013

CHENG

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Abstract:This review examines recent patents and research articles in autothermal reforming (ATR) of fossil fuels like gasoline, diesel, JP-8 along with renewable fuels such as methanol, ethanol, glycerol, butanol, bio-oils and biodiesel into H 2 gas. The focus of the research was the recent developments in terms of ATR reformer design, ATR fuel processors, reformer start up, and reforming catalysts to determine the opportunities for R&D in this area. The production of H 2 by ATR of fossil fuels has been widely investigated; several catalytic studies based on various noble and non-precious metals like Rh and Ni are available, restricting new investigations. In contrast, H 2 production from bio feedstock like bio-oils, biodiesel, ethanol, and butanol are very recent and offer considerable room for further investigation..

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Section: Al 2 O 3 Supported Catalystmentioning

confidence: 99%

Recent Advances in Hydrogen Production Via Autothermal Reforming Process (ATR): A Review of Patents and Research Articles

Nahar¹,

Dupont²

2013

CHENG

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“…Note that carbon coking would induce catalyst deactivation. In addition, Ferrandon et al 25 demonstrated that a Rh(2 wt %)/La-Al 2 O 3 catalyst produced hydrogen via ATR of gasoline containing sulfur (34 ppm), and this catalyst showed decreased activity due to the deactivation process induced by carbon coking. Moreover, the existence of sulfur also increased rate of carbon formation.…”

Section: Introductionmentioning

confidence: 99%

“…Moreover, the existence of sulfur also increased rate of carbon formation. 25 The decreased activity of 2 after 50 h may thus originate from carbon coking, which could indirectly be influenced by sulfur species.…”

Section: Introductionmentioning

confidence: 99%

Rh-Ni and Rh-Co Catalysts for Autothermal Reforming of Gasoline

Jung

Lee

Kim

et al. 2014

Bulletin of the Korean Chemical Society

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Rh doped Ni and Co catalysts, Rh-M/CeO2(20 wt %)-Al2O3 (0.2 wt % of Rh; M = Ni or Co, 20 wt %) were synthesized to produce hydrogen via autothermal reforming (ATR) of commercial gasoline at 700 o C under the conditions of a S/C ratio of 2.0, an O/C ratio of 0.84, and a gas hourly space velocity (GHSV) of 20,000 h 1 . The Rh-Ni/CeO2(20 wt %)-Al2O3 catalyst (1) exhibited excellent activities, with H2 and (H2+CO) yields of 2.04 and 2.58 mol/mol C, respectively. In addition, this catalyst proved to be highly stable over 100 h without catalyst deactivation, as evidenced by energy dispersive spectroscopy (EDX) and elemental analyses. Compared to 1, Rh-Co/CeO2(20 wt %)-Al2O3 catalyst (2) exhibited relatively low stability, and its activity decreased after 57 h. In line with this observation, elemental analyses confirmed that nearly no carbon species were formed at 1 while carbon deposits (10 wt %) were found at 2 following the reaction, which suggests that carbon coking is the main process for catalyst deactivation.

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“…In nickel based steam reforming potassium is believed to decorate active sites [27] and reduce the activity, but in particular to inhibit coke formation [28]. The poisoning effect of alkali species on rhodium catalysts for steam reforming is not much studied, but Ferrandon et al [29] impregnated an alumina-supported Rh catalyst with KNO 3 and reported inhibition of the steam reforming reaction. Albertazzi et al [30] deposited K 2 SO 4 on a Rh-Pt/ hydrotalcite catalyst and observed reduced accessible metal surface area and catalytic activity for steam methane reforming.…”

Section: Effect Of Potassium Salt Depositionmentioning

confidence: 97%

Reforming of Syngas from Biomass Gasification: Deactivation by Tar and Potassium Species

2011

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A synthesis gas (syngas) with a composition corresponding to that of a biomass gasifier has been reformed over Rh-containing monolith catalysts in the absence and presence of typical undesired species in the syngas. When toluene, a typical light tar component, was added, there was some loss of conversion, probably due to competitive adsorption and reaction with toluene, although dealkylation of toluene can not be ruled out. Significant deactivation due to the tar was not detected. Potassium components impregnated onto the catalyst (KNO 3 and KCl) in low concentrations gave slight enhancement of the reforming rates, but at higher concentrations there was severe deactivation.

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Effect of temperature, steam-to-carbon ratio, and alkali metal additives on improving the sulfur tolerance of a Rh/La–Al2O3 catalyst reforming gasoline for fuel cell applications

Cited by 57 publications

References 20 publications

Recent Advances in Hydrogen Production Via Autothermal Reforming Process (ATR): A Review of Patents and Research Articles

Recent Advances in Hydrogen Production Via Autothermal Reforming Process (ATR): A Review of Patents and Research Articles

Rh-Ni and Rh-Co Catalysts for Autothermal Reforming of Gasoline

Reforming of Syngas from Biomass Gasification: Deactivation by Tar and Potassium Species

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