Sodium Aluminate as Catalyst for Transesterification of Waste Mutton Fat

Mutreja, Vishal; Singh, Satnam; Ali, Amjad

doi:10.5650/jos.61.665

Cited by 19 publications

(20 citation statements)

References 19 publications

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“…NaAlO 2 is soluble in water but insoluble in alcohol, which makes it a suitable heterogeneous catalyst candidate for base-catalyzed organic reactions in alcoholic solvent. It was recently reported as catalytically active for transesterification [16][17][18] and condensation [19] reactions. NaAlO 2 is inexpensive and widely available.…”

Section: Accepted Manuscriptmentioning

confidence: 99%

Room temperature synthesis of glycerol carbonate catalyzed by spray dried sodium aluminate microspheres

Ramesh

Debecker

2017

Catalysis Communications

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Section: Accepted Manuscriptmentioning

confidence: 99%

Room temperature synthesis of glycerol carbonate catalyzed by spray dried sodium aluminate microspheres

Ramesh

Debecker

2017

Catalysis Communications

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“…In its pure solid form, however, NaAlO 2 is highly hygroscopic and corrosive, making its handling problematic. Also, the commercially available form of NaAlO 2 or the solid obtained by simple drying of NaAlO 2 solution has a very low surface area (below 5 m 2 g −1 ) . Blending, supporting, or dispersing this highly reactive component would be a relevant strategy to optimize both catalytic activity and workability.…”

Section: Introductionmentioning

confidence: 99%

Hydrotalcites Promoted by NaAlO₂ as Strongly Basic Catalysts with Record Activity in Glycerol Carbonate Synthesis

et al. 2018

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A new type of highly basic catalysts is obtained by promoting Mg–Al layered double hydroxides with sodium aluminate. The Mg–Al mixed oxides obtained by the calcination of pristine hydrotalcites are poorly active in the synthesis of glycerol carbonate from glycerol and dimethyl carbonate (DCM). Pure sodium aluminate on the other hand is highly active in this reaction, but it is also highly corrosive, making its handling problematic. Remarkably, promoting hydrotalcites with low amounts of sodium aluminate is sufficient to reach high yields. At 90 °C, with 3 wt % catalyst and with a DMC/glycerol ratio of 2:1, a glycerol conversion of 92 % was achieved after 30 min over the 10 wt % NaAlO2/hydrotalcite catalyst with almost 100 % selectivity towards glycerol carbonate. The texture and the crystallinity of the catalysts were strongly affected by the addition of NaAlO2. The high activity was clearly correlated with the boost in basicity brought about by sodium aluminate promotion. Whereas pristine hydrotalcites possess only weak basic sites, the basicity of the catalysts increased drastically upon promotion with NaAlO2, both in amount and strength. Diffuse reflectance infrared spectroscopy coupled with CO2 adsorption measurements revealed the presence of surface carbonates arising from strongly basic sites. Importantly, our study demonstrates that these basic catalysts are truly heterogeneous, stable, and reusable.

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“…However, calcination of NaAlO 2 at higher temperature resulted in the reduction in the catalytic activity. The total yield decreased to 8.2% (entry 10) possible due to phase transition of NaAlO 2 (Mutreja, Singh, & Ali, 2012).…”

Section: Screening Of Catalystmentioning

confidence: 98%

Oxidative conversion of lignin isolated from wheat straw into aromatic compound catalyzed by NaOH/NaAlO₂

Ke-hui

Zhao

Fan

et al. 2020

Food Science & Nutrition

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Lignin was isolated from wheat straw via organosolv process and further transferred to monophenolic compounds via oxidative conversion. Wheat straw lignin (WSL) with purity at 91.4 wt% was acquired in the presence of heterogeneous and recyclable catalyst of Amberlyst‐45. WSL was characterized by infrared spectrometer (IR), nuclear magnetic resonance spectroscopy (NMR) including 1 H NMR and 13 C NMR spectra. The results showed that WSL possesses typical syringyl (S), guaiacyl (G), and p ‐hydroxyphenyl (H) units, and it is mainly composed of S and G units. The product distribution was dependent on the composition of WSL. Derivatives from S and G units were found to be the main products. The oxidative conversion of WSL was performed by varying oxidant and catalyst. Both the formation of monophenolic compounds and aromatic aldehydes were enhanced by combining oxidants and catalysts. The composite catalyst composed of NaOH/NaAlO 2 was effective for the oxidation of WSL in the presence of nitrobenzene and atmospheric pressure air. The total yield of monophenolic compounds reached up 18.1%, and yields at 6.3 and 5.7% for syringaldehyde and vanillin were achieved, respectively.

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Sodium Aluminate as Catalyst for Transesterification of Waste Mutton Fat

Cited by 19 publications

References 19 publications

Room temperature synthesis of glycerol carbonate catalyzed by spray dried sodium aluminate microspheres

Room temperature synthesis of glycerol carbonate catalyzed by spray dried sodium aluminate microspheres

Hydrotalcites Promoted by NaAlO₂ as Strongly Basic Catalysts with Record Activity in Glycerol Carbonate Synthesis

Oxidative conversion of lignin isolated from wheat straw into aromatic compound catalyzed by NaOH/NaAlO₂

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Sodium Aluminate as Catalyst for Transesterification of Waste Mutton Fat

Cited by 19 publications

References 19 publications

Room temperature synthesis of glycerol carbonate catalyzed by spray dried sodium aluminate microspheres

Room temperature synthesis of glycerol carbonate catalyzed by spray dried sodium aluminate microspheres

Hydrotalcites Promoted by NaAlO2 as Strongly Basic Catalysts with Record Activity in Glycerol Carbonate Synthesis

Oxidative conversion of lignin isolated from wheat straw into aromatic compound catalyzed by NaOH/NaAlO2

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Hydrotalcites Promoted by NaAlO₂ as Strongly Basic Catalysts with Record Activity in Glycerol Carbonate Synthesis

Oxidative conversion of lignin isolated from wheat straw into aromatic compound catalyzed by NaOH/NaAlO₂