Catalysts based on γ-Al2O3-supported sulfated zirconia for the isomerization of gasoline fractions

Смоликов, М. Д.; Bikmetova, L. I.; Kir’yanov, D. I.; Затолокина, Е. В.; Kazantsev, K. V.; Муромцев, И. В.; Белый, А. С.

doi:10.1134/s2070050415010146

Cited by 2 publications

(3 citation statements)

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“…Supporting SZ particles on mesoporous materials is an interesting alternative to maximize the specific surface area of the active phase. In general, carrier materials with large specific surface areas, such as SiO 2 , γ ‐Al 2 O 3 , and MCM‐41 zeolite, are preferred in the preparation of mesoporous material‐supported SZ catalysts . The immobilization of SZ nanoparticles and their high dispersion on the carrier materials is currently of great interest and challenge.…”

Section: Strategies For Improving N‐alkane Isomerization Activity Ovementioning

confidence: 99%

“…For the supported SZ catalysts, however, the tetragonal phase can be easily formed on the surface of supports . The strong interaction between zirconia particles and support restricts the agglomeration and growth of ZrO 2 particles; thus, the phase transformation is suppressed . In addition, supporting the SZ onto the silica and alumina surface enhances the thermal stability of the sulfate species because of the enhanced interaction between active components and supports…”

Section: Strategies For Improving N‐alkane Isomerization Activity Ovementioning

confidence: 99%

“…In general, carrier materials with large specific surface areas, such as SiO 2 , γ-Al 2 O 3 , and MCM-41 zeolite, are preferred in the preparation of mesoporous material-supported SZ catalysts. 132,156,[180][181][182][183] The immobilization of SZ nanoparticles and their high dispersion on the carrier materials is currently of great interest and challenge. The mesoporous material-supported SZ catalysts have following advantages over the bulk SZ catalysts:…”

Section: Mesoporous Materials Supported Sz Catalystsmentioning

confidence: 99%

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Alkane isomerization over sulfated zirconia solid acid system

et al. 2020

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Summary Sulfated zirconia (SZ) and its modified versions attract great interest in recent years, because of their promising potential in n‐alkane isomerization. The oxidative and protonation routes are active and interactional in n‐alkane activation over SZ catalysts. The bimolecular reaction becomes dominant with increasing the density of active sites on SZ surface and decreasing the carbon chain of feed. Pentane and hexane are mainly isomerized by protonated cyclopropane mechanism, while which is thermodynamically unflavored for n‐butane isomerization. The deactivation of SZ catalysts is primarily caused by the loss of superacidity and oxidizing ability, resulted from the structure changes of sulfate species. Several strategies for improving the activity of SZ are reviewed. The intrinsic structure‐reactivity relationship of SZ catalysts in alkane isomerization is updated to illuminate the prerequisite for the highly active catalysts and the mechanism of active sites formation. The applications of Pt/SZ in fixed‐bed and unmodified SZ in circulating fluidizing bed in light alkanes isomerization are compared with the conventional technologies based on the chlorinated alumina catalysts. Finally, the future study of SZ catalysts is outlooked from the academic investigations to the industrial applications.

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Section: Strategies For Improving N‐alkane Isomerization Activity Ovementioning

confidence: 99%

Section: Strategies For Improving N‐alkane Isomerization Activity Ovementioning

confidence: 99%

Section: Mesoporous Materials Supported Sz Catalystsmentioning

confidence: 99%

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