Evaluation of Catalysts Mordenite and MoO&lt;sub&gt;3&lt;/sub&gt;/Mordenite in the Production of Biodiesel

Silva, Fabiana Medeiros do Nascimento; Lima, Erivaldo Genuíno; Barbosa, Tellys Lins de Almeida; Rodrigues, Meiry Gláucia Freire

doi:10.4028/www.scientific.net/msf.958.11

Cited by 3 publications

(2 citation statements)

References 14 publications

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“…Results reported in Table 1 represent various catalysts prepared and characterized by different authors for biodiesel production by transesterification of vegetable oil reported in the literature [29][30][31][32]. In order to compare the performance of the catalyst prepared in this literature (MoO 3 /Mordenite zeolite) with recent studies, despite the experimental conditions being very different, it is possible to conclude that the catalyst prepared in this work is promising.…”

Section: Introductionmentioning

confidence: 95%

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Organic Structure-Directing Agent Free Synthesis of Mordenite with Seeds, Used as A Support for Mo Catalysts in the Transesterification of Soybean Oil

Lima¹,

Silva²,

Barbosa³

et al. 2023

Catal Res

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This work prepared mordenite using seeds and without organic structure-directing agents (OSDAs). The Mo/Mordenite was prepared through wet impregnation and the catalysts’ performance was checked for transesterification of soybean oil with methanol. The mordenite zeolite was prepared through hydrothermal crystallization under static conditions with a molar composition of 6Na2O:Al2O3:30SiO2:780H2O. The catalyst samples were characterized crystallinity through X-ray diffraction, elemental composition by X-ray fluorescence spectroscopy, Surface areas by N2 adsorption-desorption, surface morphology scanning electron microscopy, functional group by infrared spectroscopy and active sites by temperature programmed desorption of ammonia. The transesterification of soybean oil was carried out using the following parameters: 5% catalyst by weight, 1:12 oil to methanol molar ratio, at 200°C for either 12 h or 24 h. X-ray diffraction patterns showed the characteristic peaks of the mordenite structure. After molybdenum oxide was added, the structure of mordenite zeolite was conserved while the specific surface area was reduced. The morphology can be described as a highly crystalline material with well-defined crystalline particles having a spherical profile characteristic of the typical morphology of sodium mordenite zeolite with a low silicon/aluminum ratio. The catalyst samples exhibited sites of a weak and medium-strength nature. The higher activity of the catalyst (Mo/Mordenite) about mordenite zeolite, could be justified by the existence of molybdenum. The wet impregnation of metal (Mo) on the surface of the MOR zeolite is an effective option to increase the acidity of the solid catalysts. Mordenite with 8.84% Mo could be a promising catalyst for the biodiesel factory.

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Section: Introductionmentioning

confidence: 95%

“…The authors [32] has been studied the catalytic performance of mordenite and MoO 3 /MOR for the transesterification of soybean oil using a batch reactor at 200°C. The effects of catalyst (Mordenite and MoO 3 /MOR) on the kinematic viscosity of produced biodiesel and conversion were investigated.…”

Section: Introductionmentioning

confidence: 99%

Organic Structure-Directing Agent Free Synthesis of Mordenite with Seeds, Used as A Support for Mo Catalysts in the Transesterification of Soybean Oil

Lima¹,

Silva²,

Barbosa³

et al. 2023

Catal Res

Self Cite

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MoO3 and Ni-Zn ferrites catalyst and their applications: a scientific and technological vision

Da Silva,

Dionízio,

Sales

et al. 2023

R. G. Secr.

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The objective of this work was to carry out a literature review of scientific articles published recently on the use of MoO3 and Ni-Zn ferrites as catalysts for biodiesel production, aiming to highlight whether there are studies in the literature reporting the use of MoO3 catalysts supported on Ni ferrite -Zn for biodiesel catalysis applications. The literature review was conducted using the Start software, with a time frame from 2018 to 2023, using the indexed platforms: ScienceDirect, Web of Science and Scopus. As a result, this work showed a wide and consolidated use of ceramic compounds of MoO3 and Ni-Zn ferrites as catalysts in reactions for biodiesel production. The present study also showed a scientific gap in the science of heterogeneous catalysts, since no studies were found that report the use of magnetic catalysts (MoO3/Ni-Zn ferrite), with emphasis on biofuel production.

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Comparative Study on the Catalytic Performance of a 13X Zeolite and its Dealuminated Derivative for Biodiesel Production

Alshahidy

Abbas

2021

Bull. Chem. React. Eng. Catal.

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Natural kaolin clay was used to successfully prepare 13X zeolite catalysts, which were modified by dealumination with citric acid. Acid leaching eliminates impurities and aluminum, and improves the Si/Al ratio of the zeolite framework. The X-ray diffraction (XRD) patterns of both the original and modified 13X zeolites were the same, indicating that the crystalline frameworks were not destroyed during the dealumination process. X-ray fluorescence data of the dealuminated 13X zeolite showed an improved Si/Al ratio. Also, Atomic Force Microscopy (AFM) was used for the characterization of the catalysts. The catalytic performance of the original and modified catalysts was tested in the esterification reaction of oleic acid in a batch reactor. A higher conversion of oleic acid was obtained using the modified 13X zeolite. The resulting experimental data from the esterification reactions were fitted to the heterogeneous Langmuir-Hinshelwood-Hougen-Watson (LHHW) kinetic model to determine the rates of reaction. The results of the reaction kinetics showed an increase in the rate of reaction velocity and a distinct decrease in the activation energy when using the modified zeolite, indicating that employing the modified catalyst will give a higher conversion over a shorter time through a reaction with less sensitivity to temperature. 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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Evaluation of Catalysts Mordenite and MoO<sub>3</sub>/Mordenite in the Production of Biodiesel

Cited by 3 publications

References 14 publications

Organic Structure-Directing Agent Free Synthesis of Mordenite with Seeds, Used as A Support for Mo Catalysts in the Transesterification of Soybean Oil

Organic Structure-Directing Agent Free Synthesis of Mordenite with Seeds, Used as A Support for Mo Catalysts in the Transesterification of Soybean Oil

MoO3 and Ni-Zn ferrites catalyst and their applications: a scientific and technological vision

Comparative Study on the Catalytic Performance of a 13X Zeolite and its Dealuminated Derivative for Biodiesel Production

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