Alkylation of isobutane/1-butene over periodic mesoporous organosilica functionalized with perfluoroalkylsulfonic acid group

Shen, Wei; Dubé, David; Kaliaguine, Serge

doi:10.1016/j.catcom.2008.09.016

Cited by 19 publications

(14 citation statements)

References 24 publications

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“…Olefin space velocity (OSV) is an important factor in the alkylation reaction 22), 23) , so we examined the effect of OSV on alkylation in the CSTR between 0.073 and 0.29 gbutene ・gcatalyst -1 ・h -1 at the optimized reaction temperature. Figure 8 shows the yield of C8 alkylate products, n-butane, C5-C7 products and 1-butene concentration with the reaction course.…”

Section: Influence Of Olefin Space Velocity (Osv)mentioning

confidence: 99%

Alkylation of Isobutane by 1-Butene over H-beta Zeolite in CSTR (Part 2) Deactivation Mechanism of Zeolite Catalyst and Optimization of CSTR Conditions

Sekine

Tajima

Ichikawa

et al. 2012

J. Jpn. Petrol. Inst.

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DGC-H-beta zeolite catalyst has higher activity and selectivity for the alkylation of isobutane with 1-butene in a CSTR. The cause of the deactivation of the catalyst and the optimum reaction conditions were investigated. Deactivation of the catalyst was caused not by adsorbed carbon species but by hydrocarbons formed by multiple alkylation or oligomerization of olefin. Optimized conditions to avoid these reactions achieved stable selective alkylation.

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Section: Influence Of Olefin Space Velocity (Osv)mentioning

confidence: 99%

Alkylation of Isobutane by 1-Butene over H-beta Zeolite in CSTR (Part 2) Deactivation Mechanism of Zeolite Catalyst and Optimization of CSTR Conditions

Sekine

Tajima

Ichikawa

et al. 2012

J. Jpn. Petrol. Inst.

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“…However, the PMO materials are also very interesting materials since they are hydrophobic (Shen et al 2008), and this is quite important as discussed by Shen et al (2008), and as we suggest in the present study.…”

Section: Introductionmentioning

confidence: 88%

“…Propylsulfonic SBA-15 has been previously used in the alkylation of isobutane with butenes (Shen et al 2008). In Fig.…”

Section: Catalytic Activitymentioning

confidence: 99%

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Preparation, characterization and catalytic activity towards green reactions of sulfonic functionalized SBA-15

et al. 2011

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Acidic heterogeneous catalysts based on the anchorage of sulfonic groups on SBA-15 mesoporous silica were synthesized. In a first synthesis step, samples containing mercapto groups were prepared by co-condensation of tetraethylorthosilicate with 3-mercaptopropyltrimethoxysilane, in presence of ethylene-propylene block copolymer as mesoporous silica structure director. In other samples, mercapto groups were introduced by post-functionalization of the traditional calcined SBA-15. In a second step, these mercapto groups were oxidized in order to get sulfonic acid groups on the surface. Characterization of the samples was carried out by N 2 adsorption-desorption, FTIR, XPS and acid-base titration. Spectroscopic techniques showed that the effective incorporation of sulfonic groups depends on the synthesis methodology used. In turn, the SBA-15 post-E.I. Basaldella ( ) · M.S. Legnoverde Centro de Investigación y Desarrollo en Ciencias Aplicadas Dr. synthesis functionalization produces changes in structural characteristics like a decrease in BET surface and changes in the pore size distribution. The as-prepared materials were tested as acid catalysts in the alkylation of isobutane with 1-butene, and in the esterification of free fatty acids with methanol. The results obtained show a lack of activity in the alkylation reaction which can be associated with the formation and stabilization of the intermediate carbocation species.

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“…The synthesized solid retains the surface area and porosity, with a high acid site density (around 1.30 mmolH + g −1 ) and an exceptional proton conductivity (up to 1.0 × 10 −1 S cm −1 ). The post-functionalized ethane-PMO showed higher catalytic activity for the alkylation of isobutene with 1-butene than perfluoroalkylsulphonic acid in SBA-15, alkylsulphonic acid integrated into PMO and zeolite (Shen et al 2008). The same PMO material was also successfully employed as a strong acidic heterogeneous catalyst in liquid phase self-condensation of heptanal, and acetalization of heptanal with 1-butanol, though water was formed in both reactions (Dube et al 2009).…”

Section: (A) Periodic Mesoporous Materials Containing Acid Single Sitesmentioning

confidence: 99%

Hybrid organic–inorganic structured materials as single-site heterogeneous catalysts

2012

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Catalyst selectivity is associated with well-defined homogeneous active sites. Transition metal complexes and organocatalysts are highly active and selective in the homogeneous phase, and their heterogenization by incorporating them into inorganic solid materials allows combining their excellent catalytic activity with improved separation, recovering and recycling properties. In this article, we present the structural characteristics and catalytic properties of hybrid organic-inorganic materials in which the molecular catalysts are part of the inorganic structure, emphasizing the possibilities of periodic mesoporous hybrid materials and coordination polymers as single-site solid catalysts.

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Alkylation of isobutane/1-butene over periodic mesoporous organosilica functionalized with perfluoroalkylsulfonic acid group

Cited by 19 publications

References 24 publications

Alkylation of Isobutane by 1-Butene over H-beta Zeolite in CSTR (Part 2) Deactivation Mechanism of Zeolite Catalyst and Optimization of CSTR Conditions

Alkylation of Isobutane by 1-Butene over H-beta Zeolite in CSTR (Part 2) Deactivation Mechanism of Zeolite Catalyst and Optimization of CSTR Conditions

Preparation, characterization and catalytic activity towards green reactions of sulfonic functionalized SBA-15

Hybrid organic–inorganic structured materials as single-site heterogeneous catalysts

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