Isobutane/2-butene alkylation on faujasite-type zeolites (H EMT and H FAU)

Stöcker, Michael; Mostad, Helle B.; Rørvik, Tine

doi:10.1007/bf00806049

Cited by 74 publications

(23 citation statements)

References 13 publications

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“…Since the zeolite EMT [14,15] has excellent isomerization and aromatization activities, it can be considered as the support additive for hydrotreating catalysts. The EMT-type zeolite possesses a hexagonal polytype of the cubic FAU-type, and its framework density is one of the lowest among microporous materials [16][17][18].…”

Section: Introductionmentioning

confidence: 99%

Synthesis of CoMo catalysts supported on EMT/FAU intergrowth zeolites with different morphologies and their hydro-upgrading performances for FCC gasoline

Gao

Duan

Zhang

et al. 2015

Chemical Engineering Journal

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Section: Introductionmentioning

confidence: 99%

Synthesis of CoMo catalysts supported on EMT/FAU intergrowth zeolites with different morphologies and their hydro-upgrading performances for FCC gasoline

Gao

Duan

Zhang

et al. 2015

Chemical Engineering Journal

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“…On the other hand, the structure and acid properties of zeolite catalyst are also important for selective alkylation. High activity for alkylation of isobutane with 1-butene requires strong 15) or mild 16) Brønsted acid sites. Ideally, a defect-free zeolite in proton form should not have Lewis acid sites, but Lewis acid sites occur due to the formation of defect sites associated with extra-framework aluminum during ion exchange or by steaming of zeolites.…”

Section: Introductionmentioning

confidence: 99%

H-ベータゼオライトを用いたcstr中でのイソブタンの1-ブテンによるアルキル化（第1報）ゼオライトの構造および合成法のアルキル化反応への影響

Sekine

Ichikawa

Tajima

et al. 2012

J. Jpn. Petrol. Inst.

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The effects of zeolite structures on alkylation of isobutane with 1-butene were investigated in a batch reactor and in a continuously stirred tank reactor (CSTR) using the proton-form zeolites, H-ZSM-5, H-L, H-Y, and H-BEA (beta). H-ZSM-5 and H-L zeolite catalysts were deactivated rapidly, whereas H-Y and H-BEA zeolites retained catalytic activity for a long time in the CSTR, implying that zeolites with three-dimensional large pore systems are useful for preventing deactivation of the catalyst during alkylation of isobutane with 1-butene. H-BEA synthesized using a dried-gel method (DGC-H-BEA) showed the most stable activity among the various H-BEA zeolites. The effects of the synthesis methods and zeolite characteristics were investigated using H-BEA zeolite. Characterization using NH3-TPD and pyridine-sorption monitored by FT-IR showed that high acid density and high Brønsted acid ratio promoted alkylation of isobutane with 1-butene over H-BEA zeolite.

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“…Among these are 13 C NMR spectroscopy [12,13], IR spectroscopy [14], UV-vis spectroscopy [15], temperature-programmed oxidation [16], matrix assisted laser desorption ionization-time of flight spectroscopy (MAL DI-TOF) [14] and dissolution of the zeolite in HF with subsequent extraction and analysis of the organic phase [17,18]. However, except for the investigations of Pater et al [19] and Feller et al [14], all these prior studies were undertaken with catalysts that had already passed the alkylation stage.…”

Section: Introductionmentioning

confidence: 98%