Fabrication of chromium based metal organic framework (MIL-101)/activated carbon composites for acetylation of glycerol

Mertsoy, Esra Yılmaz; Sert, Emine; Atalay, Süheyda; Atalay, Ferhan Sami

doi:10.1016/j.jtice.2021.03.034

Cited by 11 publications

(3 citation statements)

References 49 publications

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“…Furthermore, TAT can serve as an anti-knocking agent for gasoline. Adding TAT into biodiesel also improves cold flow properties and viscosity, and decreases the cloud and pour points of biodiesel [ 15 , 19 ].…”

Section: Introductionmentioning

confidence: 99%

Highly Active Nickel (II) Oxide-Supported Cerium Oxide Catalysts for Valorization of Glycerol into Oxygenated Fuel Additives

et al. 2023

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Acetylation of glycerol to yield monoacetin (MAT), diacetin (DAT), and triacetin (TAT) over NiO-supported CeO2 (xNiO/CeO2) catalysts is reported. The catalysts were synthesized utilizing a sol-gel technique, whereby different quantities of NiO (x = 9, 27, and 45 wt%) were supported onto the CeO2 substrate, and hexadecyltrimethylammonium bromide (CTABr) served as a porogen. The utilization of EDX elemental mapping analysis confirmed the existence of evenly distributed Ni2+ ion and octahedral NiO nanoparticles on the CeO2 surface through the DRS UV-Vis spectroscopy. The most active catalyst is 27NiO/CeO2 based on TAT selectivity in the glycerol acetylation with ethanoic acid, attaining 97.6% glycerol conversion with 70.5% selectivity to TAT at 170 °C with a 1:10 glycerol/ethanoic acid molar ratio for 30 min using a non-microwave instant heating reactor. The 27NiO/CeO2 is reusable without significant decline in catalytic performance after ten consecutive reaction cycles, indicating high structure stability with accessible active acidity.

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Section: Introductionmentioning

confidence: 99%

Highly Active Nickel (II) Oxide-Supported Cerium Oxide Catalysts for Valorization of Glycerol into Oxygenated Fuel Additives

et al. 2023

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“…Due to its distinct physiochemical properties, it can be converted into various useful chemical products. Different processes were previously employed for glycerol conversion like carbonylation 29, acetalization 30, etherification 31, hydrogenolysis 32, reforming 33, esterification 34, and dehydration 35. The most valuable process was converting glycerol into a fuel additive, which can enhance the properties of biofuels.…”

Section: Introductionmentioning

confidence: 99%

Glycerol Conversion to Solketal: Catalyst and Reactor Design, and Factors Affecting the Yield

et al. 2021

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A significant amount of glycerol has been generated by the epidemic increment in several biodiesel industries globally, which should be utilized for the biodiversity of biodiesel. The synthesis of Solketal‐acetone glycerol as a possible fuel additive is one of the most crucial glycerol recovery paths. State‐of‐the‐art reviews on batch and continuous processes to produce Solketal and possible reaction mechanisms are presented. The design of reactors and catalysts is taken into consideration and the factors influencing the yield of the Solketal process are discussed in detail. Finally, conclusions with future recommendations are reported. The utility of glycerol for acetals and ketals is of current importance for scientists seeking to find the best working conditions by testing the different catalysts, reactants, temperatures, and reactor designs.

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“…However, achieving high TA selectivity is still a crucial part of glycerol acetylation. Commonly, sulfuric acid, p-toluene sulfonic acid, hydrofluoric acid, and acid ionic liquid are used as homogenous catalysts in glycerol acetylation [24,25]. According to Nda-Umar et al [26], the use of strong acid catalysts has been demonstrated to improve the performance of glycerol acetylation.…”

Section: Introductionmentioning

confidence: 99%

Assessment on the Effect of Sulfuric Acid Concentration on Physicochemical Properties of Sulfated-Titania Catalyst and Glycerol Acetylation Performance

et al. 2021

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In this research, a solid acid catalyst was synthesized to catalyse glycerol acetylation into acetins. The sulphated-titania catalysts were prepared via the wet impregnation method at different sulfuric acid concentrations (5%, 10%, 15%, and 20%) and denoted as 5SA, 10SA, 15SA, and 20SA, respectively. The synthesized catalysts were characterized using FTIR, XRD, TGA, BET, NH3-TPD, XRF, and SEM-EDX. The synthesized catalysts were tested on glycerol acetylation reaction at conditions: 0.5 g catalyst loading, 100–120 °C temperature, 1:6 glycerol/acetic acid molar ratios, and 2–4 h reaction time. The final product obtained was analysed using GC-FID. An increment in sulfuric acid concentration reduces the surface area, pore volume, and particles size. However, the increment has increased the number of active sites (Lewis acid) and strong acid strength. 15SA catalyst exhibited excellent glycerol conversion (>90%) and the highest selectivity of triacetin (42%). Besides sufficient surface area (1.9 m2 g−1) and good porosity structure, the great performance of the 15SA catalyst was attributed to its high acid site density (342.6 µmol g−1) and the high active site of metal oxide (95%).

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Fabrication of chromium based metal organic framework (MIL-101)/activated carbon composites for acetylation of glycerol

Cited by 11 publications

References 49 publications

Highly Active Nickel (II) Oxide-Supported Cerium Oxide Catalysts for Valorization of Glycerol into Oxygenated Fuel Additives

Highly Active Nickel (II) Oxide-Supported Cerium Oxide Catalysts for Valorization of Glycerol into Oxygenated Fuel Additives

Glycerol Conversion to Solketal: Catalyst and Reactor Design, and Factors Affecting the Yield

Assessment on the Effect of Sulfuric Acid Concentration on Physicochemical Properties of Sulfated-Titania Catalyst and Glycerol Acetylation Performance

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