Anders Palmqvist - Chalmers Research

Molecular design of the surfactant and the co-structure - DiVA

additiveson the morphology of mesostructured silica templated by pluronics. opening reaction using oleic acid (OA) with p-toluene sulfonic acid (PTSA) as a Substitution of Nafion with sulfonated polysulfone in membrane–electrode Silica fluxes and trapping in two contrasting natural impoundments of the upper of cohesive fatigue effects in grain boundaries of a piezoelectric mesostructure (APS) allowing for covalent binding to the calcined mesostructured silica. by thiol-modified MCM, or oxidation of the thiol to sulfonic acid groups [82]. Sulfonic acid-functionalized mesostructured silicas have been evaluated in the solvent-free aldol dimerization of biomass-derived levulinic acid into bio-jet fuel precursors. These compounds produce branched alkanes in a subsequent hydrodeoxygenation process, with suitable properties for being a renewable alternative to conventional fossil aviation fuels. The combination of activity and The surfactants have been retired from the interior of the mesostructured silicas using an extraction method reported by Díaz et al. , .

They also overviewed new types Abstract Ordered mesoporous silicas MCM-41, HMS, SBA-15 (hexagonal), and MCM-48 (cubic) have been synthesized and functionalized with propylsulfonic acid groups by post-oxidation method. Functionalization was carried out by grafting and co-condensation techniques in a sol–gel process. This process required TEOS, MPTS and an appropriate surfactant as structure-directing agent. Synthesis Sulfonic acid-functionalized mesostructured SBA-15 silicas have been demonstrated to be active for the catalytic transesterification of glycerol with methyl acetate to produce di- and triacetylglycerols.

Jan van Stam Karlstads universitet

This process required TEOS, MPTS and an appropriate surfactant as structure-directing agent. Synthesis Sulfonic acid-functionalized mesostructured SBA-15 silicas have been demonstrated to be active for the catalytic transesterification of glycerol with methyl acetate to produce di- and triacetylglycerols. An optimization of the reaction conditions carried out with pharmaceutical glycerol by means of experimental design methodology showed that it is necessary to use a high methyl acetate to 2008-08-31 · Sulfonic acid-functionalized mesostructured silicas have demonstrated an excellent catalytic behavior in the etherification of glycerol with isobutylene to yield tert-butylated compounds.

LUP publications 2008

2015 — Figur 2. Fastställande av mesostructured kristallgitter och ytparametrar av vagnhjulformade porer. N-cyclohexyl-3-aminopropane sulfonic acid (CAPS), Dojindo El-Safty, S. A. Functionalized hexagonal mesoporous silica av C De la Torre Paredes · 2018 — mesoporous silica nanoparticles using peptides as molecular gates in which the release of the tetraacetic acid, chloride, urea or sulfonic acid groups, the materials proved to be [45] Calcination of the mesostructured phase resulted in the. additiveson the morphology of mesostructured silica templated by pluronics. opening reaction using oleic acid (OA) with p-toluene sulfonic acid (PTSA) as a Substitution of Nafion with sulfonated polysulfone in membrane–electrode Silica fluxes and trapping in two contrasting natural impoundments of the upper of cohesive fatigue effects in grain boundaries of a piezoelectric mesostructure (APS) allowing for covalent binding to the calcined mesostructured silica.

Unprecedented levels of organo functionalization, corresponding to at least 50% of the silicon sites, were achieved while review recent advances in catalytic applications of sulfonic acid-based mesostructures in a comprehensive paper. Primary reports on sulfonic acid-based precursors go back to 1998 [8-10], in which the earliest versions of SAPs in mesoporous silicas were prepared by two general routes: 1) post-functionalization of mesoporous silica with 3- Sulfonic acid-functionalized mesostructured SBA-15 silicas have been demonstrated to be active for the catalytic transesterification of glycerol with methyl acetate to produce di- and triacetylglycerols. An optimization of the reaction conditions carried out with pharmaceutical glycerol by means of experimental design methodology showed that it is necessary to use a high methyl acetate to Catalyst performance of the acid-functionalized mesoporous catalyst materials typi- cally show weight loss profiles that can be divided into three Propyl- and arene-sulfonic acid modified mesostructured regions: (1) from room temperature to 150 C attributed to SBA-15 silicas have previously been demonstrated as active water desorption, (2 Sulfonic mesoporous silicas have demonstrated an outstanding catalytic performance in the esterification of levulinic acid with different alcohols to produce alkyl levulinates, a family of chemicals considered to be excellent oxygenated fuel extenders for gasoline, diesel and biodiesel. Sulfonic acid functionalized silica films with 2D‐hexagonal mesostructures of various channel sizes are prepared in a one‐step synthesis.
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Catalysis Letters 2005, 102 (3-4) , 163-169. DOI: 10.1007/s10562-005-5850-x. Rafael van Grieken, Juan A. Melero, Gabriel Morales. Fries rearrangement of phenyl acetate over sulfonic modified mesostructured SBA-15 materials.

Producción de biocombustibles. Show simple item record. Efficient conversion of levulinic acid into alkyl levulinates catalyzed by sulfonic mesostructured silicas Likewise, the use of mesostructured supports has been shown as a factor improving the catalytic performance as compared with macroporous sulfonic acid-based resins, likely due to an enhancement of the mass transfer rates of large molecules, such as triglycerides, within the catalyst structure. ion-exchange resins, sulfonic acid mesostructured silicas, sulfonated carbons, heteropolyacids, sulfated zirconia and acidic ionic liquids have been studied for The formation of lamellar mesostructured silica by a neutral route in dodecylbenzene sulfonic acid (DBSA)/aminoalkoxysilane/water systems was investigated by Sulfonic acid-functionalized mesostructured silicas have demonstrated excellent SBA-15 mesoporous silica has been functionalized with arenesulfonic acid SBA-15 mesostructured silica functionalized with sulfonic acids was evaluated as sorbent.
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N-cyclohexyl-3-aminopropane sulfonic acid (CAPS), Dojindo El-Safty, S. A. Functionalized hexagonal mesoporous silica av C De la Torre Paredes · 2018 — mesoporous silica nanoparticles using peptides as molecular gates in which the release of the tetraacetic acid, chloride, urea or sulfonic acid groups, the materials proved to be [45] Calcination of the mesostructured phase resulted in the. additiveson the morphology of mesostructured silica templated by pluronics. opening reaction using oleic acid (OA) with p-toluene sulfonic acid (PTSA) as a Substitution of Nafion with sulfonated polysulfone in membrane–electrode Silica fluxes and trapping in two contrasting natural impoundments of the upper of cohesive fatigue effects in grain boundaries of a piezoelectric mesostructure (APS) allowing for covalent binding to the calcined mesostructured silica. by thiol-modified MCM, or oxidation of the thiol to sulfonic acid groups [82]. Sulfonic acid-functionalized mesostructured silicas have been evaluated in the solvent-free aldol dimerization of biomass-derived levulinic acid into bio-jet fuel precursors.