Enhancement of ruthenium-promoted Co/CNT nanocatalyst performance using microemulsion technique

Tavasoli, Ahmad; Tabyar, Saber; Karimi, Saeed

doi:10.1186/2228-5547-5-1

International Journal of Industrial Chemistry

2014

DOI: 10.1186/2228-5547-5-1

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Enhancement of ruthenium-promoted Co/CNT nanocatalyst performance using microemulsion technique

Ahmad Tavasoli¹,

Saber Tabyar²,

Saeed Karimi³

Abstract: The corrosion inhibition property of electrochemically synthesized 2,2′-disulfanediyldianiline compound was investigated for mild steel in 1 M HCl using electrochemical and weight loss techniques. The morphology of steel surface was examined using SEM and optical microscopy. Thermodynamic parameters were determined and discussed. To study the effect of the molecular structure of inhibitor on its inhibitive performance, quantum chemical studies were performed using density functional theory by B3LYP/6-311G (d,p… Show more

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Cited by 11 publications

References 48 publications

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Highly active and selective Co‐based Fischer–Tropsch catalysts derived from metal–organic frameworks

Pei

2017

AIChE Journal

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The design of supported Co‐based Fischer–Tropsch (F–T) catalysts with suitable reducibility, dispersion, loading, and nanoparticle structure is necessary so that high catalytic activity and selectivity for C5+ hydrocarbons can be achieved. Herein, we report that pyrolyzing a Co‐metal–organic framework‐71 precursor can provide porous carbon‐supported Co catalysts with completely reduced, well‐dispersed face‐centered cubic (FCC) Co nanoparticles (∼10 nm in average size). The catalysts can be further tailored dimensionally by doping with Si species, and the FCC Co nanoparticles can be partially transformed into hexagonal close‐packed Co via a Co2C intermediate. All the as‐prepared catalysts had extremely high Co site density (>3.5 × 10−4 mol/g‐cat.) because they had a high number of Co active sites and low mass. Aside from having high F–T activity and C5+ selectivity, with diesel fuels being the main constituents, they showed unprecedentedly high C5+ space time yields (up to 1.45 g/(g‐cat. h)) as compared to conventional Co catalysts. © 2017 American Institute of Chemical Engineers AIChE J, 63: 2935–2944, 2017

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Highly active and selective Co‐based Fischer–Tropsch catalysts derived from metal–organic frameworks

Pei

2017

AIChE Journal

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Selective solid‐phase extraction of metal for water decontamination

Mane

Ponrathnam

Chavan

2015

J of Applied Polymer Sci

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Metal-contaminated industrial effluent is a major concern for human health. Therefore, the removal of metal is of primary importance. In this study, metals were selectively extracted from water. Selective metal recovery was studied with a crown-etherbased polymer, wherein the selectivity was observed for strontium over lead. Parameters influencing the metal recovery, such as the contact time, adsorbent dosage, and metal-ion concentration, were evaluated. Interestingly, the adsorption rate of strontium was exponentially increased for the initial 4 h, and lead was adsorbed exponentially after 6 h. Notably, 98% strontium adsorption and 64% lead adsorption were obtained in 24 h. The Langmuir adsorption isotherm was in good agreement and demonstrated that the reactive sites of the adsorbent were homogeneous with monolayer metal adsorption with an adsorbent. The Freundlich adsorption isotherm was not obeyed by both metals. The pseudo-first-order and pseudo-second-order kinetics indicated that strontium was adsorbed by chemisorption and lead was adsorbed by physisorption.

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Three‐dimensional solubility parameters of natural rubber and its predictive power in diffusion coefficients

Jing

Cui

Zou

et al. 2021

J of Applied Polymer Sci

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Equilibrium swelling test is employed to study the swelling responses of natural rubber (NR) in various solvents, and to determine the total Hildebrand solubility parameter (δt) of NR. The three‐dimensional solubility parameters (HSP) of NR is obtained by virtue of software package as the result of being δd = 17.50 MPa1/2, δp = 3.20 MPa1/2, δh = 1.40 MPa1/2, and δt = 17.85 MPa1/2, respectively. The swelling ratio (q) is correlated with the energy difference (Ra) in order to deeply understand the swelling principle of NR, and the results turn out that q decreased with the increase of the Ra and it can be used to explain the abnormal swelling phenomena of methyl acetate and ethyl acetate. One of the possible applications of Ra is the prediction or explanation of diffusion behaviors of small liquids in the rubber matrix. Therefore, the diffusion coefficient (D) is calculated in accordance with the Fick's law model and attempted to correlate with the Ra value. Two qualitative relationships between D and Ra and χHSP can be preliminarily established now, which can provide an easy way to predict the diffusion behavior of fluids in rubber matrix.

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Enhancement of ruthenium-promoted Co/CNT nanocatalyst performance using microemulsion technique

Cited by 11 publications

References 48 publications

Highly active and selective Co‐based Fischer–Tropsch catalysts derived from metal–organic frameworks

Highly active and selective Co‐based Fischer–Tropsch catalysts derived from metal–organic frameworks

Selective solid‐phase extraction of metal for water decontamination

Three‐dimensional solubility parameters of natural rubber and its predictive power in diffusion coefficients

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