H3PMo12O40/Agroindustry Waste Activated Carbon-Catalyzed Esterification of Lauric Acid with Methanol: A Renewable Catalytic Support

Prado, Roberta Gomes; Bianchi, Maria Lúcia; Mota, Estella G. da; Brum, Sarah Silva; Lopes, João Henrique; Silva, Márcio José da

doi:10.1007/s12649-017-0012-0

Cited by 24 publications

(6 citation statements)

References 33 publications

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“…Different compounds have been tested as heterogeneous catalysts for biodiesel production: ionic exchange resins, supported-metal compounds, zeolites, and polymers are some representative examples [15][16][17]. In the last decades, heteropolyacids (HPAs) J o u r n a l P r e -p r o o f have emerged as sustainable catalysts in Organic Chemistry due to these have been recognized as economically and environmentally benign acid catalysts due to their acidity and redox propertier for various reactions [18].…”

Section: Introductionmentioning

confidence: 99%

Kinetics for the biodiesel production from lauric acid over Keggin heteropolyacid loaded in silica framework

Gallego-Villada

Alarcón

Palermo

et al. 2020

Journal of Industrial and Engineering Chemistry

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Section: Introductionmentioning

confidence: 99%

Kinetics for the biodiesel production from lauric acid over Keggin heteropolyacid loaded in silica framework

Gallego-Villada

Alarcón

Palermo

et al. 2020

Journal of Industrial and Engineering Chemistry

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“…It was noticed that the developed Co‐HPW/MOF‐801 nanocatalyst in this work was comparable with other studies using various heterogeneous acid catalysts. Additionally, PW(20)MFS, 53 H 3 PMo 12 O 40 /AC, 54 and Mo/ZIF‐8 56 showed higher conversion than the current catalyst, but they required higher temperature, longer reaction time, and the large amount of catalyst utilized to obtain high conversion. Hence, the catalyst reported in this work exhibits good performance at moderate mild reaction conditions.…”

Section: Resultsmentioning

confidence: 78%

In situ impregnation of cobalt‐doped tungstophosphoric acid on MOF‐801 toward enhanced catalytic activity for esterification

Zhang,

Hu,

Chen

et al. 2024

Applied Organom Chemis

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Development of an energy‐efficient and economical route is necessary for society to synthesize green biofuels. Herein, cobalt‐doped tungstophosphoric acid (Co‐HPW) is in‐situ impregnated in the Zr‐based metal–organic framework (MOF‐801) forming composite of Co‐HPW/MOF‐801. The chemical composition, morphology, and acidic sites of the Co‐HPW/MOF‐801 composite were analyzed through x‐ray diffractometer (XRD), Fourier transform infrared (FTIR), scanning electron microscope (SEM), energy‐dispersive x‐ray spectroscopy (EDS), thermogravimetric analysis (TG), N2 physisorption, ammonia temperature‐programmed desorption (NH3‐TPD), pyridine‐adsorbed infrared spectra (Py‐FTIR), and x‐ray photoelectron spectroscopy (XPS). The catalytic performance of the as‐synthesized catalyst was explored to catalyze esterification of lauric acid (LA) with methanol. The outcomes revealed that the Co‐HPW/MOF‐801 nanocatalyst achieved a high conversion of 86.3% under the optimized reaction condition (catalyst amount of 0.15 g, temperature of 100°C, time of 4 h, and methanol/LA molar ratio of 20:1). The excellent catalytical performance is mainly due to the large BET surface area, exposure of more active centers from available pore structure, and simultaneous possession of high Lewis and Brønsted acidity. Furthermore, the kinetic study revealed that the reaction process was kinetically controlled and the activation energy was found to be 42.1 kJ/mol. The results suggest that the synthesized Co‐HPW/MOF‐801 nanocatalyst is an environmental greenness, low cost, and suitable for easy scale‐up for the production of biofuels.

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“…A slight weight loss (13.1%) due to the vaporization of physically adsorbed water and thermal decomposition of constitutional water (H 3 O + ) from Fe 1 PMo in the range of 40–400 °C was also observed. Then, no additional weight loss of Fe 1 PMo catalyst was observed at the temperature of >400 °C, presumably due to the high thermal stability of the Keggin structure similar to that of other heteropolyacid-based solid-acid catalysts. − …”

Section: Resultsmentioning

confidence: 96%

“…Then, no additional weight loss of Fe 1 PMo catalyst was observed at the temperature of >400 °C, presumably due to the high thermal stability of the Keggin structure similar to that of other heteropolyacid-based solid-acid catalysts. 35−37…”

Section: Resultsmentioning

confidence: 99%

Facile Synthesis of Ferric-Modified Phosphomolybdic Acid Composite Catalysts for Biodiesel Production with Response Surface Optimization

Zhang

Yue

et al. 2019

ACS Omega

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An attempt has been made to optimize the preparation of biodiesel from the transesterification of oleic acid with methanol over iron(III)-doped phosphomolybdic acid (H 3 PMo) catalysts. The prepared doped H 3 PMo salts were characterized using powder X-ray diffraction, Fourier transform infrared spectroscopy, thermogravimetric analysis, and scanning electron microscopy. The detailed characterization results demonstrated that the doped H 3 PMo salts have a strong interaction between the iron(III) ions and metal oxygen cluster, well preserving a typical Keggin structure of heteropolyacids and possessing good thermal stability. The effect of esterification reaction parameters was investigated and optimized using single-factor experiments method in combination with response surface methodology (RSM). The doped catalyst exhibited good catalytic activity, affording the oleic acid conversion of 89.2% with single factor optimization and 95.1% with RSM. More importantly, the catalyst was simply separated by decantation and exhibited good stability, with the oleic acid conversion of 70.2% after three consecutive cycles. Besides, this catalyst can also catalyze the esterification of other free fatty acids. Therefore, the doped H 3 PMo catalyst is a promising candidate for eco-friendly production of biodiesel in industry.

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H3PMo12O40/Agroindustry Waste Activated Carbon-Catalyzed Esterification of Lauric Acid with Methanol: A Renewable Catalytic Support

Cited by 24 publications

References 33 publications

Kinetics for the biodiesel production from lauric acid over Keggin heteropolyacid loaded in silica framework

Kinetics for the biodiesel production from lauric acid over Keggin heteropolyacid loaded in silica framework

In situ impregnation of cobalt‐doped tungstophosphoric acid on MOF‐801 toward enhanced catalytic activity for esterification

Facile Synthesis of Ferric-Modified Phosphomolybdic Acid Composite Catalysts for Biodiesel Production with Response Surface Optimization

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