RETRACTED: Isomerization of n-hexane with Pt/Ni-based catalysts supported on Al-rich zeolite Beta and correlation with acidity and oxidation state of metal crystallites

Oliveira, Kátia Dionísio de; Santana, R. M.; Ávila-Neto, C.N.; Cardoso, Dilson

doi:10.1016/j.apcata.2015.02.016

Cited by 13 publications

(2 citation statements)

References 71 publications

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“…Oliviera et al 56 evaluated the effects of the temperature, time on stream (TOS), and ratios of tetraethylammonium hydroxide/SiO 2 , H 2 O/SiO 2 , and SiO 2 /Al 2 O 3 on the crystallization of Al−BEA. Pt−Ni/Al-rich BEA-5 exhibited increased selectivity and activity for the production of DMBs compared to those supported on a commercial BEA-9.…”

Section: Energy and Fuelsmentioning

confidence: 99%

Catalytic Upgrading of Light Naphtha to Gasoline Blending Components: A Mini Review

et al. 2019

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The upgrading of light naphtha (C5–C6 stream) to gasoline blending components has been the subject of intensive research at both academic and industrial laboratories. The combination of high volatility and low-octane number has made this stream surplus at many refineries worldwide. This review presents the latest developments in selected catalytic upgrading processes and a brief discussion on the reaction mechanism and reactor models. A majority of the review falls within the development of catalysts for n-hexane isomerization to hydrocarbon isomers with a high octane number. There are three types of isomerization catalysts that include Pt/Al2O3–Cl, Pt/SO4–ZrO2, and Pt/zeolite. Efforts are ongoing to improve the catalyst performance for higher selectivity and catalyst lifetime. Very little work has been published on the conversion of n-pentane mainly as a result of its low activity and the limited options available for its transformation to gasoline blending components. Other approaches discussed in the review include dimerization and oligomerization of C5–C6 alkenes and methylative homologation. The review covers literature published during the period of 2000–2018.

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Section: Energy and Fuelsmentioning

confidence: 99%

Catalytic Upgrading of Light Naphtha to Gasoline Blending Components: A Mini Review

et al. 2019

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“…These supports have been extensively used because they provide textural and morphological properties to the catalysts, in addition to being active for some types of heterogeneous catalytic reactions, such as isomerization of alkanes. [19] These supports can increase the activity of catalysts as a result of interaction with the anchored metal. They also influence the size, dispersion and thermal stability of metallic particles, and help to minimize mass transfer effects of products/reagents.…”

Section: Introductionmentioning

confidence: 99%

Towards a Correlation Between Iron/Cobalt Content, Support Pore Size and Metal Particle Size in Supported Catalysts

Battiston,

Oliveira,

Lião

et al. 2023

ChemNanoMat

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Fe−Co‐based catalysts supported on γ‐Al2O3, Aerosil 200 silica and zeolite 4A were prepared by co‐precipitation of the respective nitrates in the presence of ammonium hydroxide. The objective was to demonstrate the influence of Fe/Co mass ratio and support pore size on metal particle size. Catalysts were characterized by thermogravimetric analysis (TGA), X‐ray diffraction (XRD), N2 physisorption, Fourier‐transformed infrared spectroscopy (FTIR), and scanning (SEM) and transmission (TEM) microscopies. It was demonstrated that the minimal presence of Fe was enough to reduce the average particle diameters by half. Increasing Fe content did not cause proportional decreases in the average particle diameter. The support pore diameter probably played a role in the crystallization step of bimetallic and Fe monometallic catalysts, whose particle diameters were similar to those observed for the pores. This phenomenon was not observed for Co monometallic catalysts.

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Synergetic effect between the metal and acid sites of Pd/SAPO-41 bifunctional catalysts in n-hexadecane hydroisomerization

et al. 2017

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RETRACTED: Isomerization of n-hexane with Pt/Ni-based catalysts supported on Al-rich zeolite Beta and correlation with acidity and oxidation state of metal crystallites

Cited by 13 publications

References 71 publications

Catalytic Upgrading of Light Naphtha to Gasoline Blending Components: A Mini Review

Catalytic Upgrading of Light Naphtha to Gasoline Blending Components: A Mini Review

Towards a Correlation Between Iron/Cobalt Content, Support Pore Size and Metal Particle Size in Supported Catalysts

Synergetic effect between the metal and acid sites of Pd/SAPO-41 bifunctional catalysts in n-hexadecane hydroisomerization

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