Mg/Al hydrotalcite catalyst for biodiesel production in continuous packed bed reactors

Serio, Martino Di; Mallardo, Salvatore; Carotenuto, G.; Tesser, Riccardo; Santacesaria, E.

doi:10.1016/j.cattod.2012.01.013

Cited by 53 publications

(21 citation statements)

References 24 publications

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“…The hydrotalcite‐derived mixed oxides catalyst was prepared using the methodology proposed by Cavani et al The catalyst activation was conducted as described by Andrade et al The catalyst was characterized via X‐ray diffraction (XRD) using an XRD6000 diffractometer (Shimadzu) and Cu Kα radiation (40 kV and 30 mA). The sample was scanned at a rate of 2 degrees per minute from 2 θ = 5° to 90° in steps of 0.02°.…”

Section: Methodsmentioning

confidence: 99%

A comparative study of the behavior of Chlamydomonas reinhardtii and Spirulina platensis in solar catalytic pyrolysis

et al. 2020

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Summary The aim of this study was to investigate the behavior of two distinct microalgae species during solar catalytic pyrolysis and the influence of their chemical composition and the process variables (biomass charge, reaction time, and catalyst percentage) on the product yields and bio‐oil composition. For this purpose, solar catalytic pyrolysis of Spirulina platensis and Chlamydomonas reinhardtii was performed using hydrotalcite‐derived mixed oxides as the catalyst. To gain more insight into the effect of composition on pyrolysis behavior, the biomasses were analyzed using various analytical techniques. The results indicated that a high percentage of catalyst (47.1%) culminated in liquid yields of 42.48% and 21.31% for Chlamydomonas pyrolysis and Spirulina pyrolysis, respectively. Additionally, Spirulina pyrolysis resulted in higher solid yields compared with Chlamydomonas pyrolysis. The results also showed that Spirulina bio‐oil was rich in oxygenated compounds, probably due to its high carbohydrate content, whereas Chlamydomonas bio‐oil was rich in nitrogenated compounds because of its higher protein content. The microalgae composition (lipids, protein, carbohydrates) exerted a large influence on the catalytic pathways and led to differences in yield and product distribution. A high percentage of catalysts preferentially promoted a deoxygenation of the bio‐oil obtained from Spirulina solar pyrolysis compared with that obtained from Chlamydomonas pyrolysis.

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Section: Methodsmentioning

confidence: 99%

A comparative study of the behavior of Chlamydomonas reinhardtii and Spirulina platensis in solar catalytic pyrolysis

et al. 2020

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“…This catalyst combined Pd, efficient in lignin depolymerization [12][13][14] Ni, for the hydrogenolysis of lignin [14][15][16] and Cu, to improve hydrodeoxygenation properties of the catalyst [4,15,16]. The carrier, Mg/Al hydrotalcites were reported as catalyst for the biodiesel production [17] and were able to trap carbonate and sulfur-based anions present in the black liquor.…”

Section: Introductionmentioning

confidence: 97%

From industrial black liquor to pure phenolic compounds: A combination of catalytic conversion with ionic liquids extraction

Garron

Arquillière

Maksoud

et al. 2015

Applied Catalysis A: General

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“…10 Some notable examples of heterogeneous catalysts are zeolite, Mg/Al hydrotalcite and alkaline earth metal oxides. [11][12][13][14][15][16] Out of all heterogeneous catalysts, calcium oxide (CaO) has been praised as the most suitable catalyst in the transesterification process. Previously, many researchers have utilised waste materials such as golden snails (Pomacea sp.…”

Section: Introductionmentioning

confidence: 99%

Biodiesel Synthesis through Methanolysis of Palm Olein Using Calcium Oxide Catalyst Derived from Staghorn Coral

Zul¹,

Ganesan²,

Hussin³

2020

JPS

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This study explored the synthesis of a heterogeneous catalyst derived from staghorn coral where it was utilised to convert palm olein into methyl esters through transesterification process. The prepared catalyst was characterised by various methods, namely Hammett indicator method, benzoic acid titration method, X-ray fluorescence (XRF) spectroscopy, Brunauer-Emmett-Teller (BET)-N 2 adsorption analysis, attenuated total reflectance-Fourier transform infrared (ATR-FTIR) spectroscopy, thermal gravimetric analysis (TGA), X-ray diffraction (XRD) analysis and scanning electron microscopy (SEM). Based on the results acquired from ATR-FTIR and XRD analyses, it was evident that staghorn coral was converted into calcium oxide (CaO) upon thermal activation at 900°C. The impacts of catalyst loading, reaction time and methanol/oil molar ratio on biodiesel content were investigated to determine the optimum reaction conditions. The methyl esters content of 62.07% was achieved under optimised parameters comprising 6 wt% catalyst loading, reaction time of 4 h and methanol to oil molar ratio of 15:1. All in all, despite the low percentage of biodiesel production, staghorn coral has shown to be a potent catalyst and its catalytic ability could be improved to a whole new level through further modifications.

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Mg/Al hydrotalcite catalyst for biodiesel production in continuous packed bed reactors

Cited by 53 publications

References 24 publications

A comparative study of the behavior of Chlamydomonas reinhardtii and Spirulina platensis in solar catalytic pyrolysis

A comparative study of the behavior of Chlamydomonas reinhardtii and Spirulina platensis in solar catalytic pyrolysis

From industrial black liquor to pure phenolic compounds: A combination of catalytic conversion with ionic liquids extraction

Biodiesel Synthesis through Methanolysis of Palm Olein Using Calcium Oxide Catalyst Derived from Staghorn Coral

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