Benzene selective hydrogenation over supported Ni (nano-) particles catalysts: Catalytic and kinetics studies

Peyrovi, M. H.; Parsafard, Nastaran; Mohammadian, Zahra

doi:10.1016/j.cjche.2017.05.022

Cited by 24 publications

(28 citation statements)

References 31 publications

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“…In Ni/AC−F(50) and Ni/AC−F(75) catalysts, the peaks at 37.2°, 43.2°, 62.7°, 75.2° show NiO phase in addition to nickel ion …”

Section: Resultsmentioning

confidence: 99%

“…The presence of the peak at 645 nm represents the Ni +2 tetrahedral system and/or formation of the spinel structure ,, . Furthermore, the spectra of Ni‐containing composite catalysts do not return to baseline.…”

Section: Resultsmentioning

confidence: 99%

“…Numerous kinetics models reported for hydrogenation of benzene are as follows: Langmuir‐Hinshelwood model that is the most important. In this model, the benzene molecules and hydrogen atoms are competitively adsorbed and reacted over the surface ,. The other proposed mechanisms are the sequential addition of hydrogen atoms and formation of cyclohexene (Horiuti‐Polanyi mechanism) and also the interaction of gaseous hydrogen molecules with benzene‐adsorbed molecules (Eley‐Rideal Mechanism) …”

Section: Introductionmentioning

confidence: 99%

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Catalytic Performance and Kinetics Study over Novel Ni/Activated Carbon‐FSM‐16 Catalysts in the BTX Mixture for Benzene Selective Hydrogenation

2018

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Nickel catalysts supported on activated carbon/FSM-16 nanoparticles were prepared by wet impregnation method and tested for vapor phase selective hydrogenation of benzene in the mixture of aromatics as benzene, toluene and xylene. The textural and physico-chemical properties of nickel catalysts were characterized by X-ray diffraction, X-ray fluorescence, Fourier transform infrared spectroscopy, Uv-visible diffuse reflectance spectra, field emission scanning electron micro-scope and nitrogen adsorption-desorption analysis. The catalytic evaluation revealed that the best activity (> 94%) and high selectivity (> 99%) are related to Ni/ACÀ F(50) at 150°C and Ni/ ACÀ F(75) at 130°C and 150°C, respectively. In summary, by calculating the yield of benzene, in order to evaluate the performance (activity, stability, and selectivity) of the catalysts, it was found that the performance of Ni/ACÀ F(75) is very appropriate.

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“…In Ni/AC−F(50) and Ni/AC−F(75) catalysts, the peaks at 37.2°, 43.2°, 62.7°, 75.2° show NiO phase in addition to nickel ion …”

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Catalytic Performance and Kinetics Study over Novel Ni/Activated Carbon‐FSM‐16 Catalysts in the BTX Mixture for Benzene Selective Hydrogenation

2018

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“…It should be added that the weak peak seen at 2θ = 3.4° is related to the d220 reflection [17,20]. The main characterized peaks of FSM-16 appear at 2θ = 2.2°-2.5°, 4.2°, 4.7°, and 6.3°, that are attributed to the two-dimensional hexagonal structures (100, 110, 200, and 210) [21]. For KIT-6, highintensity diffraction that seen at 2 = 1.09°, indexed to the three-dimensional and regular structure [18].…”

Section: Hds Catalytic Reactionmentioning

confidence: 99%

Activity Evaluation of CoMo Nanoparticles Supported on Meso-microporous Composites in Dibenzothiophene Hydrodesulphurization

Parsafard

Peyrovi

Mohammadian

et al. 2019

Bull. Chem. React. Eng. Catal.

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CoMo-supported mesoporous catalysts were synthesized by 50 wt% of HZSM-5 and 50 wt% of FSM-16, KIT-6, and MCM-48. These catalysts were prepared by the wet-impregnation method and pre-sulfided with CS2. The catalytic performance was evaluated for HDS reaction of dibenzothiophene over a temperature range of 250-400 °C in a micro fixed-bed reactor under atmospheric pressure. The supported CoMo bimetallic catalysts were characterized by XRD, XRF, FT-IR, N2 adsorption-desorption, and SEM. The CoMo/KIT-6/HZSM-5 indicate higher activity than other catalysts at 400 °C for dibenzothiophene hydrodesulphurization. Also, the best selectivity to cyclohexylbenzene (CHB) is related to CoMo/FSM-16/HZSM-5. The activation energy was also calculated for all prepared catalysts for the conversions of less than 10%; according to which, the activation energy for CoMo/KIT-6/HZSM-5 is less than other catalysts (~21 kJ/mol) which can be related to the appropriate pore size and high surface area of the support. Copyright © 2020 BCREC Group. All rights reserved

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“…In these catalysts, the molar ratio of Mo/Fe is 1.7. The α-alumina, -alumina, and HMS were prepared according to the reported procedures [9][10][11]. A certain amount of these supports with appropriate volume of water were poured into a beaker.…”

Section: Supported Catalystsmentioning

confidence: 99%

Catalytic Study of the Partial Oxidation Reaction of Methanol to Formaldehyde in the Vapor Phase

Peyrovi¹,

Parsafard²,

Hasanpour³

2018

Bull. Chem. React. Eng. Catal.

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In the present work, several parameters affecting on the catalytic behavior were studied in the process of partial oxidation of methanol to formaldehyde, such as: Mo/Fe ratio in unsupported catalysts, weight percent of the metallic phase in the supported catalysts, the effect of different supports, the method of Mo-Fe deposition on the supports, and the stability of the prepared catalysts against coke. These catalysts were characterized by X-ray diffraction (XRD), Fourier Transform Infra Red (FT-IR), Thermogravimetric Analysis (TGA), Scanning Electron Microscopy (SEM), N2 adsorption-desorption, and Atomic Adsorption Spectroscopy (AAS) methods. The best results (the methanol conversion = 97 % and formaldehyde selectivity = 96 %) were obtained for Mo-Fe/g-Al2O3 prepared by co-precipitation method with Mo/Fe = 1.7, 50 wt.% of Fe-Mo phase, 2 mL/h methanol flow rate, and 120 mL/min air flow rate at 350 oC. Copyright © 2018 BCREC Group. All rights reservedReceived: 1st January 2018; Revised: 17th July 2018; Accepted: 24th July 2018How to Cite: Peyrovi, M.H., Parsafard, N., Hasanpour, H. (2018). Catalytic Study of the Partial Oxidation Reaction of Methanol to Formaldehyde in the Vapor Phase. Bulletin of Chemical Reaction Engineering & Catalysis, 13 (3): 520-528 (doi:10.9767/bcrec.13.3.2048.520-528)Permalink/DOI: https://doi.org/10.9767/bcrec.13.3.2048.520-528

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Benzene selective hydrogenation over supported Ni (nano-) particles catalysts: Catalytic and kinetics studies

Cited by 24 publications

References 31 publications

Catalytic Performance and Kinetics Study over Novel Ni/Activated Carbon‐FSM‐16 Catalysts in the BTX Mixture for Benzene Selective Hydrogenation

Catalytic Performance and Kinetics Study over Novel Ni/Activated Carbon‐FSM‐16 Catalysts in the BTX Mixture for Benzene Selective Hydrogenation

Activity Evaluation of CoMo Nanoparticles Supported on Meso-microporous Composites in Dibenzothiophene Hydrodesulphurization

Catalytic Study of the Partial Oxidation Reaction of Methanol to Formaldehyde in the Vapor Phase

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