Synthesis of Zn,La-catalysts for biodiesel production from edible and acid soybean oil

Veiga, Paula M.; Veloso, Cláudia O.; Henriques, Cristiane A.

doi:10.1016/j.renene.2016.07.035

Cited by 24 publications

(8 citation statements)

References 32 publications

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“…To improve its catalytic performance, a possible alternative is to generate a binary system with another species like other metal oxides. It is known from the literature that the addition of ZnO can enhance the activity of MgO, given its amphoteric properties (Veiga et al 2016).…”

Section: Introductionmentioning

confidence: 99%

A sustainable process for biodiesel production using Zn/Mg oxidic species as active, selective and reusable heterogeneous catalysts

Navas

Ruggera

Lick

et al. 2020

Bioresour. Bioprocess.

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This paper describes the preparation and characterization of MgO and ZnO-based catalysts, pure and mixed in different proportions, supported on γ-Al 2 O 3. Their catalytic performance was studied in the transesterification of soybean oil and castor oil with methanol and butanol, attempting to produce biodiesel. XRD (X-ray diffraction), SEM-EDS (scanning electron microscopy-energy dispersive X-ray spectroscopy), CO 2-adsorption and N 2-adsorption allowed characterizing the prepared catalysts. The characterization results were in all cases consistent with mesoporous solids with high specific surface area. All the catalysts exhibited good results, especially in the transesterification of castor oil using butanol. For this reaction, the reuse was tested, maintaining high FABE (fatty acid butyl esters) yields after four cycles. This good performance can be attributed to the basic properties of the Mg species, and simultaneously, to the amphoteric properties of ZnO, which allow both triglycerides and free fatty acids to be converted into esters. Using these catalysts, it is possible to obtain second-generation biodiesel, employing castor oil, a raw material that does not compete with the food industry. In addition, butanol can be produced from renewable biomass.

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Section: Introductionmentioning

confidence: 99%

A sustainable process for biodiesel production using Zn/Mg oxidic species as active, selective and reusable heterogeneous catalysts

Navas

Ruggera

Lick

et al. 2020

Bioresour. Bioprocess.

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“…Luo et al investigated the effect of oxide acidity on HMF etherification (Table 1, entries 9-11) and [20] However, ZrO 2 /SBA-15 (SBA-15 is one of zeolites) only gave a BPMF yield of 45.2% at 180 C within 3 h (Table 1, entry 11). [20] It should be pointed out that the catalytic performance of catalysts is largely susceptible to the catalyst preparation method, [24] but few work focuses on this topic. In this study, we investigated the influence of the preparation method, including ordinary wetness impregnation, hydrothermal treatment, and urea hydrolysis, on the catalytic activity of zirconia supported on SBA-15 (Zr-SBA).…”

Section: Introductionmentioning

confidence: 99%

Highly Efficient Reductive Etherification of 5‐Hydroxymethylfurfural to 2,5‐Bis(Alkoxymethyl)Furans as Biodiesel Components over Zr‐SBA Catalyst

Wang

Liu

et al. 2019

Energy Tech

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Biomass‐derived di‐ethers, 2,5‐bis(alkoxymethyl)furans (BAMFs), are currently envisaged as promising biodiesel or additives. Herein, Zr‐SBA prepared by a urea hydrolysis method (Zr‐SBA‐UH) is used as a highly active bifunctional catalyst for the reductive etherification of 5‐hydroxymethylfurfural (HMF), and offers the 2,5‐bis(isopropoxymethyl)furan (BPMF) yield up to 93.6% using isopropanol as the solvent and hydrogen source. Zirconia is proved to be located mainly out of the mesoporous channels for Zr‐SBA‐UH, which leads to significant enhancement in the acid content of the catalyst, and then greatly promotes the catalytic performance of Zr‐SBA‐UH for the reductive etherification of HMF. The general soundness of Zr‐SBA‐UH in other monohydric alcohols is further confirmed in this contribution, guaranteeing that a family of BAMFs can be prepared by this catalytic system. In addition, Zr‐SBA‐UH is a robust catalyst that can be reused for at least five continuous runs without a significant loss of its catalytic activity.

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“…Moreover, a fraction of Cu 0.87 Mg 0.13 O x was hydrotreated with H 2 at 300°C for 4 h to give a pre‐reduced catalyst in a tubular hydrogenation furnace. For the purpose of comparison, a conventional NaOH co‐precipitation method was also applied to prepare Cu 0.87 Mg 0.13 O x …”

Section: Methodsmentioning

confidence: 99%

Hydrogenation of methyl levulinate to γ‐valerolactone over Cu─Mg oxide using MeOH as in situ hydrogen source

Cao

Wei

Liu

et al. 2018

J of Chemical Tech & Biotech

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BACKGROUND γ‐Valerolactone (GVL) is a versatile biomass‐derived platform molecule that could serve as a building block to produce chemicals, materials and fuels, but the production of GVL from biomass via a cost‐competitive method is challenging. In this contribution, a robust Cu─Mg oxide was prepared as an efficient bifunctional catalyst for both H2 production by MeOH reforming and hydrogenation of methyl levulinate (ML) to GVL in MeOH medium. RESULTS Cu0.87Mg0.13Ox prepared by a urea hydrolysis method offered a GVL yield up to 90.6% at 220°C in 4 h without external hydrogen. This catalyst could be reused for at least seven consecutive cycles without loss of its activity. Notably, Cu0.87Mg0.13Ox also provided nearly 70% GVL yield in methanolysis products of cellulose in the presence of humins. Characterization of the catalyst indicates that the incorporation of MgO greatly facilitates the stabilization of Cu+ species that possess a better catalytic performance in ML hydrogenation compared with metallic Cu. CONCLUSION This robust Cu0.87Mg0.13Ox could greatly contribute to develop a highly facile and desirable two‐step strategy for GVL production from cellulose, through the integration of ML production by methanolysis of cellulose, H2 formation by MeOH reforming and ML hydrogenation in MeOH medium. © 2018 Society of Chemical Industry

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Synthesis of Zn,La-catalysts for biodiesel production from edible and acid soybean oil

Cited by 24 publications

References 32 publications

A sustainable process for biodiesel production using Zn/Mg oxidic species as active, selective and reusable heterogeneous catalysts

A sustainable process for biodiesel production using Zn/Mg oxidic species as active, selective and reusable heterogeneous catalysts

Highly Efficient Reductive Etherification of 5‐Hydroxymethylfurfural to 2,5‐Bis(Alkoxymethyl)Furans as Biodiesel Components over Zr‐SBA Catalyst

Hydrogenation of methyl levulinate to γ‐valerolactone over Cu─Mg oxide using MeOH as in situ hydrogen source

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