Metal-cellulose catalytic systems for biodiesel preparation and reductive stabilization

Santos, Marcelo R. dos; Rodrigues, Marcus V. R.; Santos, Aline B. S.; Valerio, M.G.; Martins, Gisele; Sucupira, Renata R.; Meneghetti, Luisa; Suarez, Paulo A. Z.

doi:10.1016/j.molcata.2016.01.009

Cited by 7 publications

(4 citation statements)

References 35 publications

(26 reference statements)

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“…The β-1,4-glycosidic bonds of cellulose make it a durable support for the formation of catalytically active nanocomposites with inorganic substances [ 12 ]. Nanocomposites produced from nanopolymers and inorganic nanoparticles offer the advantages of natural abundance and biodegradability, often benefitting from the synergy between their components [ 13 ], as exemplified by the numerous synthetic applications of cellulose-based catalysts (e.g., Pd/cellulose nanocomposites [ 14 ], γ-Fe 2 O 3 /Cu@cellulose [ 15 ], magnetic nanocellulose [ 13 ], cellulose/ZrO 2 [ 16 ] and cellulose@Fe 2 O 3 [ 17 ]…”

Section: Introductionmentioning

confidence: 99%

Highly efficient synthesis of biodiesel catalyzed by a cellulose@hematite-zirconia nanocomposite

Helmiyati

Abbas

Dini

et al. 2021

Heliyon

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The depletion of fossil fuels calls for the development of renewable alternatives such as biodiesel and has inspired much research on catalysts for the production of biodiesel through the esterification of biomass-derived materials. Herein, a green heterogeneous catalyst for highly efficient biodiesel synthesis was fabricated from rice straw–derived cellulose, hematite, and zirconia and was shown to contain porous irregularly shaped α-Fe 2 O 3 –ZrO 2 composites (average particle size = 42.5 nm) evenly distributed on the nanocellulose surface. The optimal catalyst (nanocellulose:α-Fe 2 O 3 –ZrO 2 = 2:1, w/w) afforded biodiesel in a yield of 92.50% and with specifications close to those prescribed by international standards. This catalyst could be reused for up to five cycles without a marked activity loss, with the biodiesel yield in the fifth cycle equaling 80.0%. The developed nanocomposite holds great promise for cutting the costs of biodiesel production, as it is derived from biodegradable raw materials and is renewable, non-corrosive, easy to handle, and green. In addition, the large-scale discharge of this catalyst after use does not pose a hazard to the environment.

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Section: Introductionmentioning

confidence: 99%

Highly efficient synthesis of biodiesel catalyzed by a cellulose@hematite-zirconia nanocomposite

Helmiyati

Abbas

Dini

et al. 2021

Heliyon

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“…Suarez's team developed metal complexes using carboxyl cellulose (CC) as a ligand. PdCC and NiCC proved to have a catalytic activity in the alkene hydrogenation of the unsaturated fatty chains of a biodiesel [116]. When stirred with a biodiesel obtained from soybean oil, in ethyl acetate at 80 • C under pressured hydrogen, PdCC displayed, after 6 h, a reduction of 60 to 90% of the double bonds when the pressure rose from 10 to 100 bars.…”

Section: Hydrogenationmentioning

confidence: 99%

Wood-Sourced Polymers as Support for Catalysis by Group 10 Transition Metals

et al. 2022

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Despite providing interesting solutions to reduce the number of synthetic steps, to decrease energy consumption or to generate less waste, therefore contributing to a more sustainable way of producing important chemicals, the expansion of the use of homogeneous catalysis in industrial processes is hampered by several drawbacks. One of the most important is the difficulty to recycle the noble metals generating potential high costs and pollution of the synthesized products by metal traces detrimental to their applications. Supporting the metals on abundant and cheap biosourced polymers has recently appeared as an almost ideal solution: They are much easier to recover from the reaction medium and usually maintain high catalytic activity. The present bibliographical review focuses on the development of catalysts based on group 10 transition metals (nickel, palladium, platinum) supported on biopolymers obtained from wood, such as cellulose, hemicellulose, lignin, and their derivatives. The applications of these catalysts in organic synthesis or depollution are also addressed in this review with examples of C-C couplings, oxidation, or hydrogenation reactions.

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“…The synthesis of the MgFe 2 O 4 nanocomposite in this study was based on previous literature methods 5 with mechanochemical modifications 13 . In this work, ball-milling mechanochemistry was performed using a hard small ball.…”

Section: Synthesis Of the Mgfe 2 O 4 And Mgfe 2 O 4 /Mgo Nanocompositesmentioning

confidence: 99%

“…Catalysts are currently being developed to improve the efficiency of biodiesel production. 5 Alkaline catalysts have higher catalytic activities than acid catalysts in transesterification reactions. 6 Heterogeneous solid base catalysts, such as the metal oxides MgO 7 , NiO/CNZ 10 , etc., have been widely used in various studies to synthesize biodiesel.…”

Section: Introductionmentioning

confidence: 99%

SYNTHESIS OF MgFe2O4-MgO NANOCOMPOSITE: INFLUENCE OF MgO ON THE CATALYTIC ACTIVITY OF MAGNESIUM FERRITE IN BIODIESEL PRODUCTION

Helmiyati¹,

Abbas²,

Ramadhani³

2020

RJC

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A novel magnetic solid base catalyst consisting of an MgFe 2 O 4 -MgO nanocomposite was successfully prepared by synthesizing magnesium ferrite (MgFe 2 O 4 ) as the catalyst support, and it was employed in an esterification reaction for the production of biodiesel. MgFe 2 O 4 was synthesized by a ball-milling mechanochemical method at various furnace temperatures (350°C, 550°C and 750°C), and the best results were obtained at 750°C. The results of TEM revealed an average size of 39 nm. A nanocomposite of MgFe 2 O 4 -MgO was successfully synthesized in this study, as confirmed by Fourier transform infrared (FTIR), X-ray diffraction (XRD), scanning electron microscopy-energy dispersive x-ray (SEM-EDX) and transmission electron microscopy (TEM) characterization. The results of the FTIR characterization revealed peaks with wavenumbers corresponding to Mg-O and Fe-O bonds in the range of 500-900 cm -1 , SEM mapping showed that MgO was distributed on the surface of the MgFe 2 O 4 catalyst support, and the MgFe 2 O 4 -MgO average size was found to be 50 nm by TEM. The influence of MgO on MgFe 2 O 4 was determined by varying the molar ratio of MgFe 2 O 4 to MgO from 1: 1, 1: 2 and 1: 3 and by studying the catalytic activity in the esterification of oleic acid to biodiesel. The best MgFe 2 O 4 -MgO nanocomposite have a molar ratio of 1: 2 and gave a percent conversion of 96.089%. Impregnating MgFe 2 O 4 with MgO increased the number of basic active sites, thereby increasing the catalytic activity. This type of nanocomposite is a promising new material for future catalysts.

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Metal-cellulose catalytic systems for biodiesel preparation and reductive stabilization

Cited by 7 publications

References 35 publications

Highly efficient synthesis of biodiesel catalyzed by a cellulose@hematite-zirconia nanocomposite

Highly efficient synthesis of biodiesel catalyzed by a cellulose@hematite-zirconia nanocomposite

Wood-Sourced Polymers as Support for Catalysis by Group 10 Transition Metals

SYNTHESIS OF MgFe2O4-MgO NANOCOMPOSITE: INFLUENCE OF MgO ON THE CATALYTIC ACTIVITY OF MAGNESIUM FERRITE IN BIODIESEL PRODUCTION

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