Studies on Mg-Zn mixed oxide catalyst for biodiesel production

Pasupulety, Nagaraju; Rempel, Garry L.; Ng, Flora T. T.

doi:10.1016/j.apcata.2014.10.015

Cited by 25 publications

(11 citation statements)

References 15 publications

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“…This makes the catalysts less active in the transesterification. The widely accepted mechanism for transesterification reaction by basic heterogeneous catalysis, initially comprises the formation of the methoxide anion and an alkoxycarbonyl intermediary, on basic sites on the surface (Pasupulety et al 2015;Navas et al 2018). The presence of Zn modifies the nature of the active sites, disfavouring the yield of FAME.…”

Section: Catalytic Activity Transesterification Of Soybean Oil Using mentioning

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: Catalytic Activity Transesterification Of Soybean Oil Using mentioning

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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“…Pasupulety et al 98 synthesized MgO-ZnO catalysts by precipitation method. The catalytic performance of MgO-ZnO catalyze soybean oil to synthesize FAME was studied.…”

Section: Supported Zinc Oxide Catalystsmentioning

confidence: 99%

Heterogeneous ZnO-containing catalysts for efficient biodiesel production

et al. 2021

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“…Urea is one of the most used precipitant in homogeneous precipitation method, precipitation by urea has the following advantages: firstly, the decomposition of urea to produce ammonia and CO 2 is relatively slow; secondly, no undesirable foreign ions be introduced, which facilitates the further filtration . ZnO of different structures and sizes have been synthesized using this method . However, the major disadvantages of urea precipitation method are the large solvent consumption, and the inconvenience of precipitates separation and drying.…”

Section: Figurementioning

confidence: 99%