Kinetics of low temperature CO oxidation over Pt/SnO2 catalyst

Sun, Lai Sheng; Li, Shi Yao; Li, Bei Lu

doi:10.1007/bf02475726

Cited by 10 publications

(4 citation statements)

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“…In literature, the activation energy for platinum is found to be 40-60 kJ/mol on a support with low surface area [24,25], which fits well with the results obtained here. For ruthenium the activation energy found in literature is 48 kJ/mol on Al 2 O 3 [26].…”

Section: Catalytic Activitysupporting

confidence: 92%

PtRu Colloid Nanoparticles for CO Oxidation in Microfabricated Reactors

et al. 2006

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The catalytic activity of PtRu colloid nanoparticles for CO oxidation is investigated in microfabricated reactors. The measured catalytic performance describes a volcano curve as a function of the Pt/Ru ratio. The apparent activation energies for the different alloy catalysts are between 21 and 117 kJ/mol, which agree well with literature. The size distribution of the colloid nanoparticles is determined from STM and TEM, from which an average size of the colloid nanoparticles of 2.2±0.5 nm is determined.

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Section: Catalytic Activitysupporting

confidence: 92%

PtRu Colloid Nanoparticles for CO Oxidation in Microfabricated Reactors

et al. 2006

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“…The program used an algorithm based on the fourth‐order Runge‐Kutta method to solve the ordinary differential equation 22, 23. This program is combined with a two‐swarm cooperative particle swarms optimization 24, 25, also written in FORTRAN, for calculating the kinetic parameters of best fit. For parameter estimation of the FCC kinetic model, the maximum number of iterations was set to 1000.…”

Section: Resultsmentioning

confidence: 99%

Lumped Kinetic Modeling Method for Fluid Catalytic Cracking

Zhao

Sun

2020

Chem Eng & Technol

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A new fluid catalytic cracking (FCC) lumped kinetic modeling method was put forward to improve the prediction accuracy of the FCC kinetic model. This model divided the feedstock into three lumps and the products into six lumps. The parameters of the kinetic model were obtained by combining the fourth-order Runge-Kutta integral method and the two-swarm cooperative particle swarm optimization algorithm. Compared with dividing the feedstock according to the group composition and the distillation range, the average relative error between the experimental data and the calculated values proves the higher fitting accuracy of the new lumped method. The kinetic model established by the method exhibits better adaptability to different feedstock and fewer requirements for feedstock analysis data.

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“…Estimation of the kinetic parameters was performed by minimizing the error objective function Φ , which is the weighted sum of square errors between the calculated and experimental concentration values:

true Φ = \sum_{normalj = 1}^{{normaln}_{normalc normal, normalexp}} w_{normalj} \sum_{normali = 1}^{{normaln}_{\exp}} {(a_{normalij} - {\hat{a}}_{normalij})}^{2}

…”

Section: Kinetic Modelingmentioning

confidence: 99%

Optimization of a Fluid Catalytic Cracking Kinetic Model by Improved Particle Swarm Optimization

2019

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Fluid catalytic cracking (FCC) kinetic models are characterized by high dimension, nonlinearity, discontinuity, and non-differentiability. Particle swarm optimization is easy to fall into local optima prematurely when it is applied to the optimization of kinetic models. To solve this problem, an improved two-swarm cooperative particle swarm optimization (ITCPSO) is proposed. Considering the reaction mechanism of FCC, an 8-lumps kinetic model was developed. According to the pilot data, nine PSO algorithms and ITCPSO are presented to estimate the parameters. The results demonstrate that better performance of global searching is gained by ITCPSO compared to other PSOs, thus, ITCPSO is expected to be implemented in the optimization of complex kinetic models.

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Kinetics of low temperature CO oxidation over Pt/SnO2 catalyst

Cited by 10 publications

References 1 publication

PtRu Colloid Nanoparticles for CO Oxidation in Microfabricated Reactors

PtRu Colloid Nanoparticles for CO Oxidation in Microfabricated Reactors

Lumped Kinetic Modeling Method for Fluid Catalytic Cracking

Optimization of a Fluid Catalytic Cracking Kinetic Model by Improved Particle Swarm Optimization

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