Effects of support materials and silver loading on catalytic ammonia combustion properties

Hinokuma, Satoshi; Shimanoe, Hiroki; Kawabata, Yusuke; Matsuki, Shun; Kiritoshi, Saaya; Machida, Masato

doi:10.1016/j.cattod.2017.08.010

Cited by 6 publications

(2 citation statements)

References 28 publications

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“…Aer reducing the Co catalyst precursor, the Co nanoparticles with a well-developed surface are formed. This is an interesting observation since, as reported by previous studies, 68,69 an increase in metal loading resulted in a decrease in the surface area. The results indicate that Co catalysts with a high metal loading (>20 wt%) proved to be quite resistant to sintering.…”

Section: Structural and Textural Propertiessupporting

confidence: 81%

On the effect of metal loading on the performance of Co catalysts supported on mixed MgO–La₂O₃ oxides for ammonia synthesis

et al. 2022

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Section: Structural and Textural Propertiessupporting

confidence: 81%

On the effect of metal loading on the performance of Co catalysts supported on mixed MgO–La₂O₃ oxides for ammonia synthesis

et al. 2022

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“…In addition to well-known applications in the design and optimization of diesel oxidation catalysts (DOC) 45 and threeway catalytic converters (TWC), 46 light-off curves have been employed to analyze other catalytic oxidation reactions, such as toluene, 47 formaldehyde, 48 ammonia, 49 and, more extensively, methane 50 combustion. For all reactions mentioned above, light-off curves referred to the conversion of a pollutant/fuel as the limiting reagent that was completely oxidized at the outlet of the reactor.…”

Section: Modeling Toolsmentioning

confidence: 99%

Model-Based Catalyst Selection for the Oxidative Coupling of Methane in an Adiabatic Fixed-Bed Reactor

Pirro

Obradović

Vandegehuchte

et al. 2018

Ind. Eng. Chem. Res.

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Adiabatic operation of catalytic fixed-bed reactors for Oxidative Coupling of Methane (OCM) has been simulated using a detailed microkinetic and reactor model. For several catalysts (1%wtSr/La2O3, 10%wtLa-20%wtSr/CaO, 4%wtSn-2%wtLi/MgO and 12%wtMn-20%wtNa2WO4/SiO2), diverse in activity and selectivity towards C2+ products, operating conditions have been determined that maximize C2+ yield at low inlet temperature T0 (<< 923 K). A prior analysis of light-off curves served as a guideline for optimal operating temperature ranges for each catalyst. Imposing a maximum temperature in the reactor (T max ≤ 1273 K) suggested a limit for the catalytic performances, corresponding to 13% CH4 conversion and 61% C2+ selectivity at the reactor outlet for an active (T0= 723 K) Sr/La2O3 catalyst, and an improved 19% CH4 conversion and 82% C2+ selectivity for a less active (T0= 853 K) NaMnW/SiO2 catalyst. The obtained

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High thermal conductivity of green nanofluid containing Ag nanoparticles prepared by using solution plasma process with Paramignya trimera extract

Nguyen

Tung

Hòa

et al. 2023

J Therm Anal Calorim

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Herein, we present for the first time a quick, easy, effective, and green method for preparing green nanofluids containing silver nanoparticles. The solution plasma method with a high-voltage DC power source and extracts from the Paramignya trimera was employed to prepare silver nanoparticles. The obtained results showed that silver nanoparticles were spherical, with a small average size of − 8 nm and fairly uniformly dispersed in solution. Surface plasmon resonance spectra show a strong peak at 410 nm for the prepared samples. The Fourier transform infrared spectra revealed the presence of possible functional groups on the surface of silver nanoparticles. Furthermore, the formation mechanism of silver nanoparticles is also proposed. The effect of the preparation times on the thermal conductivity of nanofluid was also investigated. As a result, the nanofluids prepared with longer preparation times had higher thermal conductivity and the highest improvement of 18.3% was obtained for the nanofluid using 4 min preparation compared to the base fluid. The obtained results indicate promise for a simple, fast, and environmentally friendly method for producing nanofluids containing silver nanoparticles with high thermal conductivity for potential applications.

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Effects of support materials and silver loading on catalytic ammonia combustion properties

Cited by 6 publications

References 28 publications

On the effect of metal loading on the performance of Co catalysts supported on mixed MgO–La₂O₃ oxides for ammonia synthesis

On the effect of metal loading on the performance of Co catalysts supported on mixed MgO–La₂O₃ oxides for ammonia synthesis

Model-Based Catalyst Selection for the Oxidative Coupling of Methane in an Adiabatic Fixed-Bed Reactor

High thermal conductivity of green nanofluid containing Ag nanoparticles prepared by using solution plasma process with Paramignya trimera extract

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Effects of support materials and silver loading on catalytic ammonia combustion properties

Cited by 6 publications

References 28 publications

On the effect of metal loading on the performance of Co catalysts supported on mixed MgO–La2O3 oxides for ammonia synthesis

On the effect of metal loading on the performance of Co catalysts supported on mixed MgO–La2O3 oxides for ammonia synthesis

Model-Based Catalyst Selection for the Oxidative Coupling of Methane in an Adiabatic Fixed-Bed Reactor

High thermal conductivity of green nanofluid containing Ag nanoparticles prepared by using solution plasma process with Paramignya trimera extract

Contact Info

Product

Resources

About

On the effect of metal loading on the performance of Co catalysts supported on mixed MgO–La₂O₃ oxides for ammonia synthesis

On the effect of metal loading on the performance of Co catalysts supported on mixed MgO–La₂O₃ oxides for ammonia synthesis