Solketal formation from glycerol and acetone over hierarchical zeolites of different structure as catalysts

Kowalska-Kuś, Jolanta; Held, A.; Frankowski, Marcin; Nowiǹska, Krystyna

doi:10.1016/j.molcata.2016.11.018

Cited by 72 publications

(52 citation statements)

References 32 publications

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“…In all the cases, yields in the range of 80-86% were obtained after 2-4 h, depending on the nature of the SHTC. It is noteworthy that these yields are comparable to previously described in the literature with different heterogeneous catalysts [25,29], but in our case reactions were carried out at r.t. while reactions with activated carbons and zeolites are described at 80 °C and 70 °C, respectively. In order to compare the activity of SHTC with commercial sulfonic solids, two arylsulfonic resins (Dowex 50Wx2 and Amberlyst A15), Nafion-silica SAC-13 with perfluoroalkylsulfonic sites, and Deloxan ASP with alkylsulfonic sites were tested in the solketal synthesis using the same reaction conditions as with SHTCs (see experimental section).…”

Section: Catalytic Performance Of Shtcs In the Synthesis Of Solketal:supporting

confidence: 89%

“…Perfluoroalkyl sulfonic sites do not show better In all the cases, yields in the range of 80-86% were obtained after 2-4 h, depending on the nature of the SHTC. It is noteworthy that these yields are comparable to previously described in the literature with different heterogeneous catalysts [25,29], but in our case reactions were carried out at r.t. while reactions with activated carbons and zeolites are described at 80 • C and 70 • C, respectively.…”

Section: Catalytic Performance Of Shtcs In the Synthesis Of Solketal:supporting

confidence: 89%

“…Thus, many efforts have been devoted to the search of efficient heterogeneous catalysts for this reaction. Among the different catalytic systems, heterogeneous Brønsted acids, such as the sulfonic resin Amberlyst 36 [23], sulfonic-functionalized or mesoporous zeolites [25], and heterogeneous Lewis acids, such as Zr-and Hf-TUD-1 and Sn-MCM-41 [26], have been described as effective catalysts for solketal production. In the case of zeolites, the surface area and the presence of mesoporosity seems to also play a crucial role for obtaining high glycerol conversions (80%) and total solketal selectivity.…”

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confidence: 99%

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Sulfonated Hydrothermal Carbons from Cellulose and Glucose as Catalysts for Glycerol Ketalization

et al. 2019

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Solketal is one of the most used glycerol-derived solvents. Its production via heterogeneous catalysis is crucial for avoiding important product losses typically found in the aqueous work-up in homogeneous catalysis. In this work, we present a study of the catalytic synthesis of solketal using sulfonated hydrothermal carbons (SHTC). They were prepared from glucose and cellulose resulting in different textural properties depending on the hydrothermal treatment conditions. The sulfonated hydrothermal carbons were also coated on a graphite microfiber felt (SHTC@GF). Thus, up to nine different solids were tested, and their activity was compared with commercial acidic resins. The solids presented very different catalytic activity, which did not correlate with their physical-chemical properties indicating that other aspects likely influence the transport of reactants and products to the catalytic surface. Additionally, the SHTC prepared from cellulose showed better reusability in batch reaction tests. This work also presents the first results for the production of solketal in a flow reactor, which opens the way to the use of SHTC@GF for this kind of reactions.

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Section: Catalytic Performance Of Shtcs In the Synthesis Of Solketal:supporting

confidence: 89%

Section: Catalytic Performance Of Shtcs In the Synthesis Of Solketal:supporting

confidence: 89%

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confidence: 99%

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Sulfonated Hydrothermal Carbons from Cellulose and Glucose as Catalysts for Glycerol Ketalization

et al. 2019

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“…The zeolite beta applied was a commercial one from zeolyst with SiO 2 /Al 2 O 3 of 25 and a zeolite beta made by Angarsk. Kowalska et al [64,65] studied the effect of (i) different zeolite topologies (MFI, BEA, and MOR), (ii) Si/Al ratio from 9.2 to 25.8, and (iii) mesoporosity. Two parent MFI zeolites with different Si/Al were applied (Si/Al = 12 and Si/Al = 27) [64].…”

Section: Ketalization Of Glycerol Over Clay Mineralsmentioning

confidence: 99%

Glycerol to Solketal for Fuel Additive: Recent Progress in Heterogeneous Catalysts

et al. 2019

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Biodiesel has been successfully commercialized in numerous countries. Glycerol, as a byproduct in biodiesel production plant, has been explored recently for fuel additive production. One of the most prospective fuel additives is solketal, which is produced from glycerol and acetone via an acetalization reaction. This manuscript reviewed recent progress on heterogeneous catalysts used in the exploratory stage of glycerol conversion to solketal. The effects of acidity strength, hydrophobicity, confinement effect, and others are discussed to find the most critical parameters to design better catalysts for solketal production. Among the heterogeneous catalysts, resins, hierarchical zeolites, mesoporous silica materials, and clays have been explored as effective catalysts for acetalization of glycerol. Challenges with each popular catalytic material are elaborated. Future works on glycerol to solketal will be improved by considering the stability of the catalysts in the presence of water as a byproduct. The presence of water and salt in the feed is certainly destructive to the activity and the stability of the catalysts.

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“…Some drawbacks of bulk HPAs like low thermal stability, high solubility in water and polar media and low surface area (1-10 m 2 g −1 ) can be improved by functionalizing them into the framework of high surface area porous supports (silica, activated carbon, zirconia, polymers and acidic ionexchange resin) [11,18,19]. Hierarchical zeolites are good candidates for catalysts and carriers of catalytic active phase due to their high surface area, adjustable structure, chemical and thermal stability [30][31][32].…”

Section: Introductionmentioning

confidence: 99%

Zr-modified hierarchical mordenite as heterogeneous catalyst for glycerol esterification

Popova

Lazarova

Kalvachev

et al. 2017

Catalysis Communications

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Hierarchical mordenite catalysts were prepared by HF and NH4F etching. Materials' zirconia modification was performed by incipient wetness impregnation in order to vary surface acidity type and strength. XRD, N2 physisorption, solid-state NMR and UV-Vis spectroscopies were applied for characterization. Acidic properties of the obtained materials were investigated by TPD of adsorbed ammonia and FT-IR spectra of adsorbed pyridine. Catalytic performance was studied for the glycerol esterification with acetic acid. Zr increased reaction turnover activity compared to raw zeolite substrate due to abundant Brönsted and Lewis moiety presence. The demonstrated biomass valorization processes to bio-based platform chemicals are of interest, as they employ biodiesel production waste.11

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Solketal formation from glycerol and acetone over hierarchical zeolites of different structure as catalysts

Cited by 72 publications

References 32 publications

Sulfonated Hydrothermal Carbons from Cellulose and Glucose as Catalysts for Glycerol Ketalization

Sulfonated Hydrothermal Carbons from Cellulose and Glucose as Catalysts for Glycerol Ketalization

Glycerol to Solketal for Fuel Additive: Recent Progress in Heterogeneous Catalysts

Zr-modified hierarchical mordenite as heterogeneous catalyst for glycerol esterification

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