Characterization of Amberlyst 15. Macroreticular Sulfonic Acid Cation Exchange Resin

Kunin, Robert; Meitzner, Erich.; Oline, J. A.; Fisher, Sallie; Frisch, Norman W.

doi:10.1021/i360002a016

Cited by 117 publications

(44 citation statements)

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“…Two heterogeneous catalysts, Amberlyst 15 and Smopex-101 containing sulfonic acid groups were applied for the hydrolysis of AG in aqueous phase. Amberlyst 15 is a macroreticular or macroporous resin composed of styrene-divinyl benzene with sulfonic acid functional groups [12]. It is bead shaped with a size of 0.45-0.60 mm and pore sizes of 40-90 nm (Fig.…”

Section: Resultsmentioning

confidence: 99%

Selective Hydrolysis of Arabinogalactan into Arabinose and Galactose Over Heterogeneous Catalysts

et al. 2010

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The application of solid acid catalysts for the production of monomers from hemicelluloses can be one of the key steps in developing the concept of an integrated forest biorefinery. Arabinogalactans (AG) are hemicelluloses which can be extracted on an industrial scale from larch wood species and has a great potential as a sustainable feedstock for bio-based products. Hydrolysis of AG to monomers over acidic heterogeneous catalysts (Smopex-101 and Amberlyst 15) was successfully demonstrated for the first time to selectively produce arabinose as the primary product, followed by the release of galactose without further degradation of the monomers.

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Section: Resultsmentioning

confidence: 99%

Selective Hydrolysis of Arabinogalactan into Arabinose and Galactose Over Heterogeneous Catalysts

et al. 2010

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“…Secondly, the presence of DMSO was suggested to have a catalytic activity in the removal of H2O molecules from the furanose ring [33,38] as well as reducing the formation of by-products and stabilizing the formed AMF and HMF in the reaction mixture [39]. Since Amberlyst 15 is a cation exchange resin in the H + form with a macro-reticular pore structure [40], dehydration of DAF in this case is catalyzed heterogeneously at hydrogen ion sites located throughout the resin beads. It is expected that higher amounts of catalyst during long reaction Since Amberlyst 15 is a cation exchange resin in the H + form with a macro-reticular pore structure [40], dehydration of DAF in this case is catalyzed heterogeneously at hydrogen ion sites located throughout the resin beads.…”

Section: Dehydration Of Dafmentioning

confidence: 99%

Conversion of D-fructose to 5-acetoxymethyl-2-furfural Using Immobilized Lipase and Cation Exchange Resin

et al. 2019

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5-Acetoxymethyl-2-furfural (AMF) was prepared from D-fructose via 1,6-diacetylfructose (DAF) through a simple two-step reaction pathway. Immobilized enzyme (Novozym 435) was found to be the best enzymatic catalyst for the trans-esterification step (yielding 94.6% DAF). In the dehydration step, while soluble H2SO4 was found to be the best acidic catalyst (yielding 86.6% AMF), we opted to utilize heterogeneous cation exchange resin (Amberlyst 15) together with recyclable industrial solvents (1,4-dioxane) for a more sustainable AMF synthesis procedure. Although the total yield of AMF was a little lower, both the enzyme and the solid acid catalyst could be recycled for five cycles without a significant loss of activity, which has a major contribution to the cost-efficient aspect of the entire process.

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“…Monosulfonated resins present one sulfonic group per phenyl ring. Table 1 lists the physical properties determined [29][30][31] for Amberlyst 15 ® , which is the highly crosslinked (19-20% w/w) monosulfonated resin, used as reference in this work to model P(S-DVB).…”

Section: Modeled P(s-dvb) Resinmentioning

confidence: 99%

Atomistic simulations of the structure of highly crosslinked sulfonated poly(styrene-co-divinylbenzene) ion exchange resins

et al. 2015

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The microscopic structure of highly crosslinked sulfonated poly(styrene-codivinylbenze) resins have been modeled by generating atomistic microstructures using stochastic-like algorithms that are , subsequently, relaxed using molecular dynamics.Two different generation algorithms have been tested. Relaxation of the microstructures generated by the first algorithm, which is based on a homogeneous construction of the resin, leads to a significant overestimation of the experimental density as well as to an unsatisfactory description of the porosity. In contrast, the generation approach that combines algorithms for the heterogeneous growing and branching of the chains enables the formation of crosslinks with different topologies. In particular, the intrinsic heterogeneity observed in these resins is well reproduced when topological loops, which are defined by two or more crosslinks closing a cycle, are present in their microscopic description. Thus, the apparent density, porosity and pore volume estimated using microstructures with these topological loops, called super-crosslinks, are in very good agreement with experimental measures. Although the backbone dihedral angle distribution of the generated and relaxed models is not influenced by the topology, the number and type of crosslinks affect the medium-and long-range atomic disposition of the backbone atoms and the distribution of the sulfonic groups. Analysis of the distribution of the local density indicates that super-crosslinks are responsible of the heterogeneous homogenization observed during the MD relaxation. Finally, - stacking interactions between aromatic phenyl groups have been analyzed, those in which the two rings adopt a T-shaped disposition being considerably more abundant than those with the rings co-facially oriented, independently of the resin topology.3

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Characterization of Amberlyst 15. Macroreticular Sulfonic Acid Cation Exchange Resin

Cited by 117 publications

References 0 publications

Selective Hydrolysis of Arabinogalactan into Arabinose and Galactose Over Heterogeneous Catalysts

Selective Hydrolysis of Arabinogalactan into Arabinose and Galactose Over Heterogeneous Catalysts

Conversion of D-fructose to 5-acetoxymethyl-2-furfural Using Immobilized Lipase and Cation Exchange Resin

Atomistic simulations of the structure of highly crosslinked sulfonated poly(styrene-co-divinylbenzene) ion exchange resins

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