Conversion of Short-Chain Alkanes by Vanadium-Based and Cu/Zeolite SCR Catalysts

Ottinger, Nathan; Veele, Rebecca; Xi, Yuanzhou; Liu, Z. Gerald

doi:10.4271/2016-01-0913

Cited by 6 publications

(14 citation statements)

References 14 publications

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“…Notably, CH 4 conversion increases from 2.5% to 12.1%. This conversion of CH 4 at 550 °C is comparable with the result reported by Ottinger, et al [6], though their conversions were obtained by oxidation of simulated gases. The conversions of C 2 H 6 and C 3 H 8 are much higher in our study, but the conversion of CO is much less.…”

Section: Co/zsm-5 Catalystssupporting

confidence: 91%

“…However, because these compounds already exhibit more than 45% conversion at 450 °C, the increase in conversion with temperature is not as great as CH 4 . All these conversions observed in this study are higher than the results reported by Ottinger et al [6] with simulated gases.…”

Section: Co-ni/zsm-5 Catalystscontrasting

confidence: 73%

“…After Cu was added in this metal/zeolites catalyst, the performance of methane conversion was considerable as compared with reported results [6]. It is quite likely that steam facilitates the reforming of CH 4 , and O 2 and NO x (or some combination of these) aid in the oxidation of CH 4 .…”

Section: Discussionsupporting

confidence: 55%

“…Researchers have been looking for lowercost alternative catalysts for alkane oxidation that are also resistant to degradation by sulfur, water, etc. For example, a recent study reported using a Cu/zeolite catalyst to actively convert CO and CH 4 at 600 °C [6]. This finding was unexpected according to the authors' statement, because they did not find data showing oxidation of short chain alkanes with Cu/zeolites.…”

Section: Introductionmentioning

confidence: 93%

See 3 more Smart Citations

Conversion of Exhaust Gases from Dual-Fuel (Natural Gas-Diesel) Engine under Ni-Co-Cu/ZSM-5 Catalysts

Meng¹,

Wijesinghe²,

Colvin³

et al. 2017

SAE Technical Paper Series

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Natural gas (NG), which consists of mostly methane, can be co-combusted with diesel fuel in existing compression ignition engines through dual fuel technology with reasonable engine modifications. The removal of short-chain alkanes (e.g. CH 4 , C 2 H 6 and C 3 H 8) of a dual fuel (natural gas and diesel) engine raises a distinctive topic to the exhaust aftertreatment system (ATS). However, there are few studies reported based on tests with real engine exhaust. This present study focuses on the conversion of short-chain alkanes by Co, Ni and Cu/ZSM-5 catalysts, which are commonly used for oxidation/partial oxidation and reforming. These catalysts are tested with exhaust of a dual-fuel (natural gas and diesel) engine. The complicated and dynamic exhaust composition, determined by the engine loading and natural gas substitution, can result in different components in the exhaust and various conversions for species. Co-Ni-Cu/ZSM-5 had the highest conversion of CH 4 and non-methane hydrocarbon (NMHC) at 30000 h-1 space velocity (SV) when the engine was operated at 1000 RPM, 25% loading, 70% natural gas substitution. Significant amounts of CO and formaldehyde were generated by the dual fuel engine, but can be mostly converted starting at 450 °C. Methane conversion of up to 42% was attainable at a higher temperature of 500 °C by using Co-Ni-Cu/ZSM-5 in the aftertreatment system.

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Section: Co/zsm-5 Catalystssupporting

confidence: 91%

Section: Co-ni/zsm-5 Catalystscontrasting

confidence: 73%

Section: Discussionsupporting

confidence: 55%

Section: Introductionmentioning

confidence: 93%

See 2 more Smart Citations

Conversion of Exhaust Gases from Dual-Fuel (Natural Gas-Diesel) Engine under Ni-Co-Cu/ZSM-5 Catalysts

Meng¹,

Wijesinghe²,

Colvin³

et al. 2017

SAE Technical Paper Series

View full text Add to dashboard Cite

show abstract

“…Vanadia-catalysts are widely applied for NOx reduction in heavy-duty diesel engines, for natural gas engines and other stationary applications due to their good NOx conversion efficiency and high durability against sulfur-poisoning [6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Selective Catalytic Reduction of NOx with Ammonia and Hydrocarbon Oxidation Over V2O5–MoO3/TiO2 and V2O5–WO3/TiO2 SCR Catalysts

et al. 2018

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The NH3-SCR performance in the presence of short and long chain hydrocarbons (propylene and dodecane) as well as of formaldehyde was investigated for a series of V2O5-MoO3/TiO2 (VMoTi) and V2O5-WO3/TiO2 (VWTi) catalysts. The results demonstrate that vanadium oxides act as the main catalytically active component for NOx conversion, hydrocarbon (HC) and formaldehyde oxidation. Among VMoTi and VWTi materials with different vanadium loading, the catalysts containing 3 wt.% V2O5 lead to the highest catalytic activity. The ability to simultaneously remove NOx, HC and HCHO over VMoTi is inferior to that of the conventional WO3-based catalyst. However, VMoTi exhibits higher CO2 selectivity, especially during oxidation of long-chain HCs, which represents an important advantage for a possible multifunctional catalyst. Apart from CO, formaldehyde was detected as byproduct during HC oxidation for both catalyst formulations.

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Impact of gas phase reactions and catalyst poisons on the NH3-SCR activity of a V2O5-WO3/TiO2 catalyst at pre-turbine position

Zengel

Stehle

Deutschmann

et al. 2021

Applied Catalysis B: Environmental

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Conversion of Short-Chain Alkanes by Vanadium-Based and Cu/Zeolite SCR Catalysts

Cited by 6 publications

References 14 publications

Conversion of Exhaust Gases from Dual-Fuel (Natural Gas-Diesel) Engine under Ni-Co-Cu/ZSM-5 Catalysts

Conversion of Exhaust Gases from Dual-Fuel (Natural Gas-Diesel) Engine under Ni-Co-Cu/ZSM-5 Catalysts

Selective Catalytic Reduction of NOx with Ammonia and Hydrocarbon Oxidation Over V2O5–MoO3/TiO2 and V2O5–WO3/TiO2 SCR Catalysts

Impact of gas phase reactions and catalyst poisons on the NH3-SCR activity of a V2O5-WO3/TiO2 catalyst at pre-turbine position

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