Effect of Iron Content on the Catalytic Properties of Activated Carbon-Supported Magnetite Derived from Biomass

Lima, Sirlene Barbosa; Borges, Sarah Maria Santana; Rangel, María do Carmo; Marchetti, Sérgio Gustavo

doi:10.5935/0103-5053.20130044

Cited by 36 publications

(12 citation statements)

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“…work [12] . In addition, the XRD pattern shows a small peak around 2θ = 28.9° which refers to disordered amorphous sheets of Graphene for iron/Graphene nano-composites and this shows good agreements with Lima et al findings [16]. The average crystal size calculated by Scherrer formula using full-width at half maximum (FWHM) at a stronger diffraction peak, where the average crystal size found to be 7.14 Å.…”

Section: Characterization Of Prepared Catalystsupporting

confidence: 85%

Optimization of Oxidative Desulfurization Reaction with Fe2O3 Catalyst Supported on Graphene Using Box-Behnken Experimental Method

Alwan

Ali

Makki

2019

Bull. Chem. React. Eng. Catal.

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In this study, the catalyst activity of Fe2O3 supported on Graphene for Iraqi gas oil oxidation desulfurization (ODS) by hydrogen peroxide (H2O2) was investigated. The prepared catalyst was synthesized by wet impregnation for ferric nitrate as a Fe2O3 precursor while Graphene represented as catalyst support. The synthesized catalyst was characterized by XRD, FTIR, and EDS analysis. The experiments were designed according to three-level for three variables by Box-Behnken experimental design; Stirring time, catalyst dosage and temperature while the sulfur removal efficiency acts as experiment response. Catalyst activity was studied by ODS reaction for Iraqi gas oil (sulfur content 9400 ppm) at temperature range (40-60 ºC), stirring time (160-240 minutes) and catalyst dosage (0.5-2.5 g), the results show maximum sulfur removal efficiency 90% at stirring time, catalyst dosage and temperature 240 min, 1.5 g, and 60 ºC, respectively. ANOVA analysis shows the important effect of each independent variable on sulfur removal efficiency (response) as following influential order; stirring time, reaction temperature and catalyst dosage. Kinetics calculation showed that the ODS reaction obeys pseudo first-order reaction with reaction rate constant equal 1.0837, 1.5893, and 2.5053 at temperature 40, 50, and 60 ºC, respectively, while activation energy equal 36.26 kJ/mol. Copyright © 2020 BCREC Group. All rights reserved

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Section: Characterization Of Prepared Catalystsupporting

confidence: 85%

Optimization of Oxidative Desulfurization Reaction with Fe2O3 Catalyst Supported on Graphene Using Box-Behnken Experimental Method

Alwan

Ali

Makki

2019

Bull. Chem. React. Eng. Catal.

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“…As well as the HULIS redox mediator ligands these hydroxyl and ketone groups transfer electrons from oxidants to reductants and vice versa. Like the HULIS-iron pair, the black-carbon-iron pair enhances the redox mediation above the levels of every individual electron shuttle (Kim et al, 2013;Lima et al, 2013;L. Wang et al, 2014).…”

Section: Oxidation Of Organic Aerosol Particles Containing Black and mentioning

confidence: 99%

Climate engineering by mimicking natural dust climate control: the iron salt aerosol method

et al. 2017

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Abstract. Power stations, ships and air traffic are among the most potent greenhouse gas emitters and are primarily responsible for global warming. Iron salt aerosols (ISAs), composed partly of iron and chloride, exert a cooling effect on climate in several ways. This article aims firstly to examine all direct and indirect natural climate cooling mechanisms driven by ISA tropospheric aerosol particles, showing their cooperation and interaction within the different environmental compartments. Secondly, it looks at a proposal to enhance the cooling effects of ISA in order to reach the optimistic target of the Paris climate agreement to limit the global temperature increase between 1.5 and 2 • C.Mineral dust played an important role during the glacial periods; by using mineral dust as a natural analogue tool and by mimicking the same method used in nature, the proposed ISA method might be able to reduce and stop climate warming. The first estimations made in this article show that by doubling the current natural iron emissions by ISA into the troposphere, i.e., by about 0.3 Tg Fe yr −1 , artificial ISA would enable the prevention or even reversal of global warming. The ISA method proposed integrates technical and economically feasible tools.

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“…A Figura 3 apresenta a distribuição dos artigos ao longo dos últimos 10 anos. A busca nacional de artigos obteve apenas dois resultados, um deles se refere a um artigo publicado no periódico "JournaloftheBrazilianChemicalSociety" em 2013 (LIMA et al, 2013), onde se avaliou a eficiência de óxidos de ferro suportados em carvão ativado, a partir de cascas de coco, na remoção do corante azul de metileno através do processo de adsorção e da reação de Fenton. E o segundo, se trata de um artigo publicado no periódico "Cerâmica" em 2014 (BALDISSERA, 2014) …”

Section: Metodologiaunclassified

Uso De Óxidos De Metais De Transição Na Catálise Da Reação De Fenton

Queiroz¹,

Zanta²,

Tonholo

et al. 2016

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Fenton reaction is one of the most promising advanced oxidative processes (AOP) for treating effluents and it has been highlighted as alternative technology for conventional methods.It consists in the use of oxidizing species such as peroxides and iron ions as homogeneous agents for electron transfer. There are some limitations to its application onto industrial scale, mainly due the small pH range in which reaction occurs and also about the amount of Fe(OH) x generated at the end of the process that demands a proper disposition, increasing costs for implementation of the treatment process. The use of solid catalysts has been investigated to overcome these limitations. In order to trace the scientific and technological scenarios on the use of transition metal oxides as catalysts in the reaction in question, search and analysis of scientific papers and patents in national and international databases were performed. Although revealed a dense scientific literature related to this technology, a total of 814 articles, there are few technological products registered, totaling 151 patents. It was also observed that the country with the highest number of patent deposits is China, distantly followed by Brazil. These data indicate an opportunity for investment in research and development to generate technological innovation in this area.

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Effect of Iron Content on the Catalytic Properties of Activated Carbon-Supported Magnetite Derived from Biomass

Cited by 36 publications

References 0 publications

Optimization of Oxidative Desulfurization Reaction with Fe2O3 Catalyst Supported on Graphene Using Box-Behnken Experimental Method

Optimization of Oxidative Desulfurization Reaction with Fe2O3 Catalyst Supported on Graphene Using Box-Behnken Experimental Method

Climate engineering by mimicking natural dust climate control: the iron salt aerosol method

Uso De Óxidos De Metais De Transição Na Catálise Da Reação De Fenton

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