Development of Catalyst for Diesel Engine

Ueno, Hideaki; Furutani, Toshinobu; Nagami, Tetsuo; Aono, Norihiko; Goshima, Hideyuki; Kasahara, Kouichi

doi:10.4271/980195

Cited by 17 publications

(12 citation statements)

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“…Thus, it is important and realistic for a diesel oxidation catalyst to improve the sulfur resistibility. TiO 2 is known as an effective sulfur-resistant material [31][32][33], and our previous works [34][35][36] also prove that TiO 2 -based diesel oxidation catalysts display excellent sulfur resistibility. However, TiO 2 is not active enough for catalytic diesel SOF combustion.…”

Section: Introductionmentioning

confidence: 72%

Synthesis of Sulfur-Resistant TiO2-CeO2 Composite and Its Catalytic Performance in the Oxidation of a Soluble Organic Fraction from Diesel Exhaust

et al. 2018

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Sulfur poisoning is one of the most important factors deteriorating the purification efficiency of diesel exhaust after-treatment system, thus improving the sulfur resistibility of catalysts is imperative. Herein, ceria oxygen storage material was introduced into a sulfur-resistant titania by a co-precipitation method, and the sulfur resistibility and catalytic activity of prepared TiO 2 -CeO 2 composite in the oxidation of diesel soluble organic fraction (SOF) were studied. Catalytic performance testing results show that the CeO 2 modification significantly improves the catalytic SOF purification efficiency of TiO 2 -CeO 2 catalyst. SO 2 uptake and energy-dispersive X-ray (EDX) results suggest that the ceria doping does not debase the excellent sulfur resistibility of bare TiO 2 , the prepared TiO 2 -CeO 2 catalyst exhibits obviously better sulfur resistibility than the CeO 2 and commercial CeO 2 -ZrO 2 -Al 2 O 3 . X-ray powder diffraction (XRD) and Raman spectra indicate that cerium ions can enter into the TiO 2 lattice and not form complete CeO 2 crystals. X-ray photoelectron spectroscopy (XPS), H 2 -temperature programmed reduction (H 2 -TPR) and oxygen storage capacity (OSC) testing results imply that the addition of CeO 2 in TiO 2 -CeO 2 catalyst can significantly enhance the surface oxygen concentration and oxygen storage capacity of TiO 2 -CeO 2 .

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Section: Introductionmentioning

confidence: 72%

Synthesis of Sulfur-Resistant TiO2-CeO2 Composite and Its Catalytic Performance in the Oxidation of a Soluble Organic Fraction from Diesel Exhaust

et al. 2018

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“…The experience gained to date shows that the main property that affects the efficiency of after-treatment devices is the fuel sulfur content, e.g. [12][13][14][15][16]. During the recent years, a comprehensive assessment has been undertaken, by co-operation of USA government organizations, manufacturers of engines and aftertreatment devices and research laboratories, in an attempt to determine the effects of fuel sulfur content on the efficiency of some devices.…”

Section: Decse Program Resultsmentioning

confidence: 99%

Fuel Effects on Emissions from Heavy-Duty Diesel Engines – Results of Recent Research Programs

Veinblat¹,

Tartakovsky²,

Gutman³

et al. 2001

SAE Technical Paper Series

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The main goal of the work presented here was to compile a review of the available literature on the effects of diesel fuel properties on emissions from heavy-duty diesel engines (HDDEs). Because of the large number of various studies that have been performed in this area, the present review is mainly based on the most comprehensive recent research programs: the European Programme on Emissions, Fuels and Engine Technologies (EPEFE), and the USA Programs EPA Heavy-Duty Engine Working Group (EPA-HDEWG) and Diesel Emission Control -Sulfur Effect (DECSE). Fuel properties that have been identified over the years as influencing emissions from HDDEs, and were considered in this work, are cetane number, density, aromatics (total and poly-), sulfur and oxygen contents and back-end distillation.The impact of fuel sulfur content on emission control systems was reviewed, based mainly on the findings of the latest DECSE Program, which was concluded in 2000. These systems include diesel oxidation catalysts, lean-NO x catalysts, NO x adsorbers and diesel particulate filters (traps).A comparison is presented between the regression models, developed in the framework of the EPEFE and EPA-HDEWG programs. Only limited data are available addressing oxygen effects on HDDE emissions. It is noted that there is still lack of data regarding the fuel effects on emissions of engines tested over the new European Transient Cycle.

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“…This is because the non-sulfating material TiO 2 exhibits low SO 2 adsorption, and hence suppresses sulfate formation. 12,38 Moreover, the doping of La into TiO 2 had essentially no effect on the naturally excellent sulfur resistance of the Pt/TiO 2 catalyst.…”

Section: Sulfur Resistibilitymentioning

confidence: 99%

Promotional effect of lanthana on the high-temperature thermal stability of Pt/TiO₂sulfur-resistant diesel oxidation catalysts

et al. 2017

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Development of Catalyst for Diesel Engine

Cited by 17 publications

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Synthesis of Sulfur-Resistant TiO2-CeO2 Composite and Its Catalytic Performance in the Oxidation of a Soluble Organic Fraction from Diesel Exhaust

Synthesis of Sulfur-Resistant TiO2-CeO2 Composite and Its Catalytic Performance in the Oxidation of a Soluble Organic Fraction from Diesel Exhaust

Fuel Effects on Emissions from Heavy-Duty Diesel Engines – Results of Recent Research Programs

Promotional effect of lanthana on the high-temperature thermal stability of Pt/TiO₂sulfur-resistant diesel oxidation catalysts

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Development of Catalyst for Diesel Engine

Cited by 17 publications

References 0 publications

Synthesis of Sulfur-Resistant TiO2-CeO2 Composite and Its Catalytic Performance in the Oxidation of a Soluble Organic Fraction from Diesel Exhaust

Synthesis of Sulfur-Resistant TiO2-CeO2 Composite and Its Catalytic Performance in the Oxidation of a Soluble Organic Fraction from Diesel Exhaust

Fuel Effects on Emissions from Heavy-Duty Diesel Engines – Results of Recent Research Programs

Promotional effect of lanthana on the high-temperature thermal stability of Pt/TiO2sulfur-resistant diesel oxidation catalysts

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Promotional effect of lanthana on the high-temperature thermal stability of Pt/TiO₂sulfur-resistant diesel oxidation catalysts