Engineered nanoporous materials mediated heterogeneous catalysts and their implications in biodiesel production

Sharma, Swati; Saxena, Varun; Baranwal, Anupriya; Chandra, Pranjal; Pandey, Lalit M.

doi:10.1016/j.mset.2018.05.002

Cited by 54 publications

(35 citation statements)

References 96 publications

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“…An efficient strategy to control carbon dioxide, CO 2 emissions relies on developing platforms in order to reduce the consumption of fossil fuels around the world [1][2][3]. As an alternative to this type of fuel, biofuels are becoming an important source of fuels contributing to the reduction of CO 2 emissions [3,4]. Biofuels are categorized in primary and secondary groups.…”

Section: Introductionmentioning

confidence: 99%

“…Biodiesel is defined as chains of fatty acid methyl ester (FAME), which can be used as an alternative to diesel engine fuel. This green fuel is frequently obtained from the transesterification of triglycerides with methanol [3,7,17]. Traditionally, biodiesel is generated by transesterification reactions of vegetable oils using a homogenous catalyst [24,25].…”

Section: Introductionmentioning

confidence: 99%

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The Effect of the ZrO2 Loading in SiO2@ZrO2-CaO Catalysts for Transesterification Reaction

et al. 2020

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The effect of the ZrO2 loading was studied on spherical SiO2@ZrO2-CaO structures synthetized by a simple route that combines the Stöber and sol-gel methods. The texture of these materials was determined using SBET by N2 adsorption, where the increment in SiO2 spheres’ surface areas was reached with the incorporation of ZrO2. Combined the characterization techniques of using different alcoholic dissolutions of zirconium (VI) butoxide 0.04 M, 0.06 M, and 0.08 M, we obtained SiO2@ZrO2 materials with 5.7, 20.2, and 25.2 wt % of Zr. Transmission electron microscopy (TEM) analysis also uncovered the shape and reproducibility of the SiO2 spheres. The presence of Zr and Ca in the core–shell was also determined by TEM. X-ray diffraction (XRD) profiles showed that the c-ZrO2 phase changed in to m-ZrO2 by incorporating calcium, which was confirmed by Raman spectroscopy. The purity of the SiO2 spheres, as well as the presence of Zr and Ca in the core–shell, was assessed by the Fourier transform infrared (FTIR) method. CO2 temperature programmed desorption (TPD-CO2) measurements confirmed the increment in the amount of the basic sites and strength of these basic sites due to calcium incorporation. The catalyst reuse in FAME production from canola oil transesterification allowed confirmation that these calcium core@shell catalysts turn out to be actives and stables for this reaction.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

The Effect of the ZrO2 Loading in SiO2@ZrO2-CaO Catalysts for Transesterification Reaction

et al. 2020

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“…O processo de transesterificação pode ser classificado: catalítico e não catalítico (SHARMA et al, 2018), conforme figura 3. A transesterificação catalítica pode utilizar catalisador homogêneo ou heterogêneo (TRAN; CHANG; LEE, 2017).…”

Section: Transesterificaçãounclassified

Produção de biodiesel, métodos, perspectivas para o Brasil – uma revisão

Castro¹,

Barañano²

2019

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A busca pela substituição dos combustíveis fósseis introduziu o biodiesel na matriz energética do Brasil em 2005. O biodiesel é um combustível derivado de biomassa que reduz a emissão de gases poluentes ao meio ambiente. A soja é a principal matériaprima para a produção desse combustível verde. O presente artigo consiste numa revisão de literatura, com a finalidade de abordar sobre as matérias-primas oleaginosas, os álcoois, a tecnologia e os desafios da produção do biodiesel no Brasil. Essa revisão foi baseada em periódicos, revistas, relatórios e sites. É percebido o quanto o uso do biodiesel como combustível é promissor.

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“…They have been explored in various area of research ranging from drug delivery, drug design to various photocatalytic and environmental applications [3][4][5][6][7]. Cellulose is the most abundant renewable biopolymer existing on the earth with distinct characteristic properties of high mechanical strength, biocompatibility, biodegradability and economic feasibility.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and characterization of methyl acrylamide cellulose nanowhiskers for environmental applications

2020

Lett Appl NanoBioSci

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Cellulose is the most abundant biopolymer on earth with excellent mechanical strength, biocompatibility, and biodegradability. Yet, its poor chemical reactivity deceives its application in various biotechnological sectors. In this study, the microcrystalline cellulose was used as low cost substrate for the synthesis of cellulose nanowhiskers (CNWs) using controlled acid hydrolysis. In order to improve their chemical reactivity, synthesized CNWs were modified with carboxyl functional groups using 2,2,6,6-Tetramethylpiperidinyloxyl (TEMPO) mediated oxidation reaction. These carboxylated cellulose nanowhiskers (CCNWs) were functionalized with amine functional groups using carbodiimide reaction. The as-synthesized amine terminated amido-cellulose nanowhiskers (ACNWs) were modified with methyl acryl functional groups using Michael addition resulting methyl acryl functionalized amido-cellulose nanowhiskers (MAACNWs). The synthesized MAACNWs were characterized using Fourier-transform infrared spectroscopy, UV-visible spectroscopy and nuclear magnetic resonance spectroscopy. The physical morphology was studied using Atomic force microscopy, X-Ray Diffraction and zeta analyser. The modified cellulose nanowhiskers were found to exhibit 4 folds increased surface roughness confirming fabrication of negatively charged chemical groups on CNWs yielding 7 folds higher surface charge than pristine nanowhiskers. Hence, the modified CNWs could be acknowledged as potential candidate for effective heavy metal biosorption and remediation studies.

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Engineered nanoporous materials mediated heterogeneous catalysts and their implications in biodiesel production

Cited by 54 publications

References 96 publications

The Effect of the ZrO2 Loading in SiO2@ZrO2-CaO Catalysts for Transesterification Reaction

The Effect of the ZrO2 Loading in SiO2@ZrO2-CaO Catalysts for Transesterification Reaction

Produção de biodiesel, métodos, perspectivas para o Brasil – uma revisão

Synthesis and characterization of methyl acrylamide cellulose nanowhiskers for environmental applications

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