NiO–W2O3/Al2O3 catalysts for the production of ecological gasoline: Effect of both NiO and the preparation method on the isobutene oligomerization selectivity

Tzompantzi, Francisco; Mantilla, A.; Angel, G. Del; Padilla, Juan; Fernández, José Luis Fernández; Díaz-Góngora, J.A.I.; Gómez, R.

doi:10.1016/j.cattod.2008.09.022

Cited by 15 publications

(16 citation statements)

References 21 publications

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“…solid phosphoric acid, [9,24,25] zeolites, [6,[26][27][28][29][30] amorphous silicaalumina [31,32] and other metal oxide catalysts. [33,34] Zeolites and zeotypesa re particularly promising versatile, crystalline, microporousm aterials which may withstand the catalytic reaction conditions and catalystr egeneration treatments (e.g.,t ob urn off coke). Zeolites with BEA topology may present high commercial potential;i tw as demonstrated their relatively high oligomerisation activity,s electivity to C 12 + products (in the diesel range) and somewhat enhanced stability.…”

Section: Introductionmentioning

confidence: 99%

Mesostructured Catalysts Based on the BEA Topology for Olefin Oligomerisation

et al. 2018

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Mesostructured solid acid catalysts based on the BEA topology were explored for olefin oligomerisation, which is an attractive synthetic route to produce clean, sulfur‐free fuels or fuel additives with reduced aromatics content. Specifically, the oligomerisation of 1‐butene, which may derive from (non‐)renewable sources, was performed under high pressure and continuous‐flow operation. The mesostructured catalysts consisted of a hierarchical zeotype (BEA‐hier) synthesized by a one‐pot approach using a dual‐function template and, on the other hand, a composite (BEA/TUD) possessing zeolite nanocrystallites embedded in a mesoporous matrix synthesised under hydrothermal conditions. The influence of the material properties, catalyst activation temperature and reaction parameters were investigated by combining characterisation, two‐dimensional gas chromatography combined with time‐of‐flight mass spectrometry (ToFMS) studies, and catalytic studies. The catalytic performances were compared to those of commercial nano/microcrystalline zeolites of different topologies and COD‐900 (type of catalyst for the conversion of olefins to distillates process). BEA‐hier performed superiorly in terms of conversion and space–time yields to diesel cut products.

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Section: Introductionmentioning

confidence: 99%

Mesostructured Catalysts Based on the BEA Topology for Olefin Oligomerisation

et al. 2018

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“…They have also concluded that high LA/ BA ratio is beneficial for the stability of the catalysts [1]. Very recently, NiO-W 2 O 3 /Al 2 O 3 catalyst has been tried for the production of ecological gasoline from isobutene [23]. Company Idemitsu Kosan claimed the use of zirconias as the catalysts for the oligomerization having trimers selectivity of 65%; however, no detailed information is available [14].…”

Section: Trimerization Over Oxidesmentioning

confidence: 99%

Trimerization of Isobutene Over Solid Acid Catalysts

Jhung

Chang

2009

Catal Surv Asia

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Oligomerization of isobutene is a very promising reaction not only for the production of isobutene oligomers such as trimers but also for the separation of isobutene from C 4 mixtures. Several solid acid catalysts have been applied for the continuous oligomerization of isobutene in liquid phase. This review analyzes the trimerization of isobutene over various solid acid catalysts such as zeolites, oxides (zirconias and titanias) and acid resins. Trimers selectivity increases with increasing isobutene conversion, irrespective of catalysts such as zeolites and acid resins. Very stable operation with high trimers selectivity is accomplished with WO x /ZrO 2 catalyst having tetragonal zirconia or various zeolite catalysts with high Lewis acid site-to-Brønsted acid site ratio (LA/BA ratio). For a good performance, acid resins should be macroporous and strong acid (sulphonic acid group) with high acid concentration. Inorganic catalysts are superior to acid resins because the deactivated inorganic materials can be regenerated by simple calcination. The WO x /ZrO 2 catalyst may be applied to a commercial process because about several thousand tons of isobutene can be oligomerized per one ton of zirconia catalyst in a catalytic cycle without regeneration. The oligomerization of isobutene may be improved further because the reaction has been started only recently and no research has been done for the optimization of the reaction and catalysts. It is expected to develop a new inorganic catalyst having suitable acidity, LA/BA ratio and phase, etc. by further research. The isobutene trimers, with or without hydrogenation, may be used for various purposes, and the importance of this trimerization reaction will be increased considering the expected surplus of isobutene due to the banned use of methyl-tert-butyl ether.

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“…Because it can produce more valuable products less harmful to the environment and the feedstock of the process will derive from many other industrial byproducts (fluid catalytic cracking, steam cracking, and Fischer-Tropsch synthesis). The oligomerization has already been studied by variety method of such as solid phosphoric acid [1][2][3], ion exchange resins [4][5][6][7][8][9][10], zeolites [11][12][13][14][15][16][17][18][19], ionic liquids [20][21][22][23] and metal oxide [24][25] catalysts.…”

Section: Introductionmentioning

confidence: 99%

Application of Modified Clay Catalysts in Oligomerization of Light Olefins

Toktassyn¹,

Utelbayev²

2018

J. Pure App. Chem. Res.

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The oligomerization of light olefins to high-octane clean engine fuels is one possible way to solve increased requirements for motor fuels. This paper presents a study of catalytic oligomerization of C 2-C 4 olefins on Ru-Fe supported pillared clay catalyst with different metallic quantity. The prepared catalysts were characterized by X-ray diffraction, N 2 adsorption-desorption at 77K, BET and BJH methods. The BET and BJH methods showed the pillared clay had significantly increased surface area and when an appropriate amount of Ru and Fe were added, the bimetallic alloys were uniformly dispersed on the modified clay surfaces and had an average mesopore size of 4.1 nm. It is indicated that excess metal oxides blocked the surface of bimetallic RuFe/MMC system, resulted in decreased catalytic activity. The low metal content catalysts showed higher oligomerization activity and increasing the Fe content gave selectivity to isomerization reactions.

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NiO–W2O3/Al2O3 catalysts for the production of ecological gasoline: Effect of both NiO and the preparation method on the isobutene oligomerization selectivity

Cited by 15 publications

References 21 publications

Mesostructured Catalysts Based on the BEA Topology for Olefin Oligomerisation

Mesostructured Catalysts Based on the BEA Topology for Olefin Oligomerisation

Trimerization of Isobutene Over Solid Acid Catalysts

Application of Modified Clay Catalysts in Oligomerization of Light Olefins

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