Optimization study by Box-Behnken design (BBD) and mechanistic insight of CO2 methanation over Ru-Fe-Ce/γ-Al2O3 catalyst by in-situ FTIR technique

Iqbal, Malik Muhammad Asif; Bakar, Wan Azelee Wan Abu; Toemen, Susilawati; Razak, Fazira Ilyana Abdul; Azelee, Nur Izyan Wan

doi:10.1016/j.arabjc.2019.06.010

Cited by 20 publications

(7 citation statements)

References 24 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The FTIR bands in the F-127 spectra have peaks at 2899 cm −1 , which could be attributed to the stretching -CH from the alkyl groups, and a strong band ranging from 1100 to 1150 cm −1 refers to C-O [33]. The stretching bands at 1360 and 1472 cm −1 confirms asymmetric and symmetric stretching of CH3 groups, respectively [34]. The results correspond to the molecular formula of F-127.…”

Section: Morphology Of Nzvi and F-nzvimentioning

confidence: 65%

The Influence of Pluronic F-127 Modification on Nano Zero-Valent Iron (NZVI): Sedimentation and Reactivity with 2,4-Dichlorophenol in Water Using Response Surface Methodology

Zhang

Jing

et al. 2020

Catalysts

View full text Add to dashboard Cite

Nano zero-valent iron (NZVI) is widely used for reducing chlorinated organic pollutants in water. However, the stability of the particles will affect the removal rate of the contaminant. In order to enhance the stability of nano zero-valent iron (NZVI), the particles were modified with F-127 as an environmentally friendly organic stabilizer. The study investigated the effect of the F-127 mass ratio on the colloidal stability of NZVI. Results show that the sedimentation behavior of F-NZVI varied at different mass ratios. A biphasic model was used to describe the two time-dependent settling processes (rapid sedimentation followed by slower settling), and the settling rates were calculated. The surface morphology of the synthesized F-NZVI was observed with a scanning electron microscope (SEM), and the functional groups of the samples were analyzed with Fourier Transform Infrared Spectroscopy (FTIR). Results show that the F-127 was successfully coated on the surface of the NZVI, and that significantly improved the stability of NZVI. Finally, in order to optimize the removal rate of 2,4-dichlorophenol (2,4-DCP) by F-NZVI, three variables were tested: the initial concentration 2,4-DCP, the pH, and the F-NZVI dosage. These were evaluated with a Box-Behnken Design (BBD) of response surface methodology (RSM). The experiments were designed by Design Expert software, and the regression model of fitting quadratic model was established. The following optimum removal conditions were determined: pH = 5, 3.5 g·L−1 F-NZVI for 22.5 mg·L−1 of 2,4-DCP.

show abstract

Section: Morphology Of Nzvi and F-nzvimentioning

confidence: 65%

The Influence of Pluronic F-127 Modification on Nano Zero-Valent Iron (NZVI): Sedimentation and Reactivity with 2,4-Dichlorophenol in Water Using Response Surface Methodology

Zhang

Jing

et al. 2020

Catalysts

View full text Add to dashboard Cite

show abstract

“…The activity of noble metals has been extensively investigated within the Sabatier reaction, displaying both high CO 2 conversion and CH 4 selectivity [193][194][195][196][197][198]. Many works in this area focus on Ru as the active phase [199][200][201][202][203][204]. Most investigate bimetallic formulations, using baser metals to promote the Ru active phase: one particularly interesting work investigated the use of Li, Na and K against a pure Ru/Al 2 O 3 catalyst [202].…”

Section: Noble Metal Catalystsmentioning

confidence: 99%

“…Further to bimetallic catalysts, a recent trimetallic catalyst, Ru-Fe-Ce/Al 2 O 3 , was also investigated [200]. The catalyst was reported to possess considerable CO 2 conversion over 40 hours (ca.…”

Section: Noble Metal Catalystsmentioning

confidence: 99%

Engineering heterogenous catalysts for chemical CO2 utilization: Lessons from thermal catalysis and advantages of yolk@shell structured nanoreactors

Price

Reina

Liu

2021

Journal of Energy Chemistry

View full text Add to dashboard Cite

“…and interaction terms of the model [24]. The model validity was proven using ANOVA and the significance of the terms was determined from the t-test and p-values (P < 0.05).…”

Section: Experimental Designmentioning

confidence: 99%

Optimization of Inhibition Efficiency of a Schiff Base on Mild Steel in Acid Medium: Electrochemical and RSM Approach

Kumari

Lavanya

2021

J Bio Tribo Corros

View full text Add to dashboard Cite

This research investigates the effect of Schiff base, namely, N'-[4-(dimethylamino) benzylidene]-4-hydroxybenzohydrazide (SB) on the corrosion mitigation of mild steel (MS) in hydrochloric acid medium (HCl) using potentiodynamic polarization (PDP) technique. The study highlights the effect of SB concentration, HCl concentration, and temperature on the corrosion current density (icorr) and inhibition efficiency (IE). The adsorption of SB onto the MS surface was justified with the support of kinetic and thermodynamic parameters. The morphological behavior of the MS surface was analyzed by scanning electron microscopy (SEM) and atomic force microscopy (AFM). A blend of statistical study and interaction plots has been applied to obtain a thorough understanding of the corrosion parameters. Experimental results obtained by PDP measurements revealed that tested compounds had a good anti-corrosion capacity. The main and interaction effects of the parameters on the response were analyzed using Box-Behnken Design. An empirical model equation from experimental results elucidates the relationship among the variables. The optimized parameters for the maximum output were recognized. The maximum IE of 81.5 was predicted by RSM with temperature (A = 30 °C), HCl concentration (B = 0.5 M), and Inhibitor concentration (C = 0.0001 M). Using RSM, further analyses regarding individual and interaction effects between the variables can be more comprehensive. Few more parameters such as pH and time can be included in the future study. Graphic Abstract

show abstract

Optimization study by Box-Behnken design (BBD) and mechanistic insight of CO2 methanation over Ru-Fe-Ce/γ-Al2O3 catalyst by in-situ FTIR technique

Cited by 20 publications

References 24 publications

The Influence of Pluronic F-127 Modification on Nano Zero-Valent Iron (NZVI): Sedimentation and Reactivity with 2,4-Dichlorophenol in Water Using Response Surface Methodology

The Influence of Pluronic F-127 Modification on Nano Zero-Valent Iron (NZVI): Sedimentation and Reactivity with 2,4-Dichlorophenol in Water Using Response Surface Methodology

Engineering heterogenous catalysts for chemical CO2 utilization: Lessons from thermal catalysis and advantages of yolk@shell structured nanoreactors

Optimization of Inhibition Efficiency of a Schiff Base on Mild Steel in Acid Medium: Electrochemical and RSM Approach

Contact Info

Product

Resources

About