Design of an environmentally friendly reactor for naphtha oxidative desulfurization by air employing a new synthetic nano-catalyst based on experiments and modelling

Abstract In this paper, oxidative desulfurization (ODS) process is studied for the purpose of removing the sulfur components from light gas oil (LGO) via experimentation and process modeling. A recently developed (by the authors) copper and nickel oxide based composite nano-catalyst is used in the process. The ODS experiments are conducted in a batch reactor and air is used as an oxidizer under moderate operation conditions. Determination of the kinetic parameters with high accuracy is necessary of the related chemical reactions to develop a helpful model for the ODS operation giving a perfect design of the reactor and process with high confidence. High conversion of 92% LGO was obtained under a reaction temperature of 413 K and reaction time of 90 min for synthesized Cu Ni /HY nano-catalyst. Here model based optimization technique incorporating experimental data is used to estimate such parameters. Two approaches (linear and non-linear) are utilized to estimate the best kinematic parameters with an absolute error of less than 5% between the predicted and the experimental results. An environmentally friendly fuel is regarded the main goal of this study, therefore the optimization process is then employed utilizing the validated model of the prepared composite nano-catalyst to get the optimal operating conditions achieving maximum conversion of such process. The results show that the process is effective in removing more than 99% of the sulfur from the LGO resulting in a cleaner fuel.

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Nano-Fe3O4@walnut shell/Cu(ii) as a highly effective environmentally friendly catalyst for the one-pot pseudo three-component synthesis of 1,3-oxazine derivatives under solvent-free conditions

RSC Advances ◽

10.1039/d0ra04282j ◽

2020 ◽

Vol 10 (53) ◽

pp. 31874-31880

Author(s):

Arefeh Dehghani Tafti ◽

Bi Bi Fatemeh Mirjalili

Keyword(s):

Alkaline Medium ◽

Environmentally Friendly ◽

Solvent Free ◽

Walnut Shell ◽

One Pot ◽

Nano Catalyst ◽

Solvent Free Conditions ◽

Highly Effective ◽

Nano Fe3o4 ◽

The One

Fe3O4@walnut shell/Cu(ii) as an eco-friendly bio-based magnetic nano-catalyst was prepared by adding CuCl2 to Fe3O4@walnut shell in alkaline medium.

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Polymolybdate Supported Nano Catalyst for Desulfurization of Diesel

Applying Nanotechnology to the Desulfurization Process in Petroleum Engineering - Advances in Chemical and Materials Engineering ◽

10.4018/978-1-4666-9545-0.ch009 ◽

2016 ◽

pp. 263-280

Author(s):

Wan Azelee Wan Abu Bakar ◽

Wan Nazwanie Wan Abdullah ◽

Rusmidah Ali ◽

Wan Nur Aini Wan Mokhtar

Keyword(s):

Calcination Temperature ◽

Mild Condition ◽

Sulfur Removal ◽

Oxidative Desulfurization ◽

Catalyst Loading ◽

Impregnation Method ◽

Tert Butyl Hydroperoxide ◽

Nano Catalyst ◽

Catalytic Oxidative Desulfurization ◽

Wet Impregnation Method

The Catalytic oxidative desulfurization (Cat-ODS) comprises of molybdenum based catalyst, tert-butyl hydroperoxide (TBHP) as oxidant and dimethylformamide (DMF) as solvent for extraction. A series of polymolybdates supported alumina were prepared using the wet impregnation method. This potential catalyst was characterized by FTIR, FESEM-EDX and XPS for its physical properties. From catalytic testing, Fe/MoO3-Al2O3 calcined at 500°C was revealed as the most potential catalyst which gave the highest sulfur removal under mild condition .The sulfur content in commercial diesel was successfully reduced from 440 ppmw to 88 ppmw under mild condition followed by solvent extraction. Response surface methodology involving Box-Behnken was employed to evaluate and optimize Fe/MoO3/Al2O3 preparation parameters (calcination temperature, catalyst loading, and Fe loading) and their optimum values were found to be 550 ºC, 10 g/L, and 10%. of calcination temperature, catalyst loading, and Fe loading. Based on these results, the reaction mechanisms of peroxy oxygen were proposed.

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A Novel Synthetic Nano-Catalyst (Ag2O3/Zeolite) for High Quality of Light Naphtha by Batch Oxidative Desulfurization Reactor

BULLETIN OF CHEMICAL REACTION ENGINEERING AND CATALYSIS ◽

10.9767/bcrec.16.4.11383.716-732 ◽

2021 ◽

Vol 16 (4) ◽

pp. 716-732

Author(s):

Amer Talal Nawaf ◽

Shymaa Ali Hameed ◽

Layth T. Abdulateef ◽

Aysar Talib Jarullah ◽

Mohammed S. Kadhim ◽

...

Keyword(s):

Sulfur Compound ◽

Sulfur Removal ◽

Oxidative Desulfurization ◽

Bet Surface Area ◽

Model Parameters ◽

Fuel Quality ◽

Incipient Wetness Impregnation ◽

Impregnation Method ◽

Light Naphtha ◽

Nano Catalyst

Oxidative desulfurization process (ODS), enhanced with a novel metal oxide (Ag ions) as an active component over nano-zeolite that has not been reported in the literature, is used here to improve the fuel quality by removing mercaptan (as a model sulfur compound in the light naphtha). Nano-crystalline (nano-support (Nano-zeolite)) composite is prepared by Incipient Wetness Impregnation method loaded with a metal salt to obtain 0.5, 1 and 1.5% of Ag2O3 over Nano-zeolite. The new homemade nano-catalysts (Ag2O3/Nano-zeolite) prepared are characterized by Brunauer–Emmett–Teller (BET) (surface area, pore volume and pore size), X-ray Diffraction (XRD), Fourier Transform Infra Red (FTIR), and Scanning Electron Microscopy (SEM) analysis. The ODS process is then used to evaluate the performance of the catalysts for the removal of sulfur at different reaction temperatures (80–140 °C) and reaction times (30–50 min) in a batch reactor using the air as oxidant. 87.4% of sulfur removal has been achieved using 1% silver oxide loaded on Nano zeolite (1% of Ag2O3/Nano-zeolite) giving a clear indication that our newly designed catalyst is highly efficient catalyst in the removal of sulfur compound (mercaptan) from naphtha. A new mechanism of chemical reaction for sulfur removal by oxygen using the new homemade catalyst (Ag2O3/Nano-zeolite) prepared has been suggested in this study. The best kinetic model parameters of the relevant reactions are also estimated in this study using pseudo first order technique based on the experimental results. Copyright © 2021 by Authors, Published by BCREC Group. This is an open access article under the CC BY-SA License (https://creativecommons.org/licenses/by-sa/4.0).

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Enhancement of light naphtha quality and environment using new synthetic nano-catalyst for oxidative desulfurization: Experiments and process modeling

Computers & Chemical Engineering ◽

10.1016/j.compchemeng.2020.106869 ◽

2020 ◽

Vol 140 ◽

pp. 106869

Author(s):

Aysar T. Jarullah ◽

Ghazwan S. Ahmed ◽

Ban A. Al-Tabbakh ◽

Iqbal M. Mujtaba

Keyword(s):

Process Modeling ◽

Oxidative Desulfurization ◽

Light Naphtha ◽

Nano Catalyst

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An efficient environmentally friendly CuFe2O4/SiO2 catalyst for vanillyl mandelic acid oxidation in water under atmospheric pressure and a mechanism study

New Journal of Chemistry ◽

10.1039/d0nj04798h ◽

2021 ◽

Author(s):

Haifang Mao ◽

Hongzhao Wang ◽

Tao Meng ◽

Chaoyang Wang ◽

Xiaojun Hu ◽

...

Keyword(s):

Aqueous Solution ◽

Atmospheric Pressure ◽

Mandelic Acid ◽

Environmentally Friendly ◽

Acid Oxidation ◽

Mechanism Study ◽

Nano Catalyst ◽

Green Production ◽

Vanillyl Mandelic Acid ◽

Oxidation System

Aimed at the green production of vanillin, a highly efficient environmentally friendly oxidation system was introduced to oxidize VMA with a porous CuFe2O4/SiO2 component nano-catalyst in aqueous solution under atmospheric pressure.

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INCLUSION OF BIOCATALYSTS INTO THE PROCESS OF CHEMICAL- BIOLOGICAL OXIDATIVE DESULFURIZATION OF OIL FRACTIONS

BIOTECHNOLOGY: STATE OF THE ART AND PERSPECTIVES ◽

10.37747/2312-640x-2021-19-277-279 ◽

2021 ◽

Vol 1 (19) ◽

pp. 277-279

Author(s):

O.V. Senko ◽

Stepanov N.A. ◽

М.А. Gladchenko ◽

S.N. Gaydamaka ◽

A.V. Akopyan ◽

...

Keyword(s):

Raw Materials ◽

Agricultural Waste ◽

Oxidative Desulfurization ◽

Environmentally Friendly ◽

Liquid Hydrocarbon ◽

Ph Control ◽

Materials Selection ◽

Oil Fractions

A number of approaches are proposed, combined and tested to ensure the most effective introduction of biocatalysts into the process of chemical and biocatalytic desulfurization of liquid hydrocarbon raw materials: selection and use of environmentally friendly reagents, formation of immobilized artificial consortia, their preliminary adaptation to media, pH control of the medium, introduction of co-substrates in the form of agricultural waste, etc.

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