Influence of nickel loading on the hydroisomerization of n-dodecane with nickel-tungsten oxide-alumina supported catalysts

García-Pérez, Diana; Lopez-Garcia, A.; Reñones, Patricia; Álvarez-Galván, M. Consuelo; Campos‐Martín, Jose M.

doi:10.1016/j.mcat.2022.112556

Cited by 2 publications

(3 citation statements)

References 37 publications

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“…Appropriate metal−acid equilibrium concentration could improve the selectivity of isomers and inhibit the cracking reaction. Garci ́a-Peŕez et al 59 introduced different contents of tungsten oxide into alumina to form composite oxide support and then supported Ni metal to prepare catalyst for hydroisomerization of n-dodecane. It was found that after the introduction of tungsten oxide, the dispersion of Ni species increased, and the balance and synergistic catalysis of the metal center and acid center of the catalyst were improved.…”

Section: Al 2 O 3 and Its Compositementioning

confidence: 99%

Synthesis, Modification, and Performance Regulation of SAPO-11 Molecular Sieve and Development of n-Alkane Hydroisomerization Catalyst: A Mini-Review

Dai,

Cheng,

Liu

et al. 2024

Energy Fuels

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Hydroisomerization catalyst is the key of the hydroisomerization process, which is a bifunctional catalyst composed of acidic support and metal components. In this work, the research progress of hydroisomerization catalysts was reviewed first from two aspects: support and metal components. The supports and metal components used to prepare hydroisomerization catalysts in recent years were introduced, and their advantages/disadvantages were summarized. SAPO-11 molecular sieve is the most commonly used and suitable support for hydroisomerization catalyst. The synthesis methods and influencing factors of SAPO-11 molecular sieves were introduced in detail, and the research progress of modification of SAPO-11 molecular sieves was summarized. Meanwhile, the effects of pore structure, acidity, and crystal size of SAPO-11 molecular sieve on SAPO-11-based hydroisomerization catalyst and their regulation methods were emphatically introduced. Finally, the development direction of n-alkane (carbon number ≤ 16) hydroisomerization catalyst and the synthesis prospect of SAPO-11 molecular sieve were summarized and prospected. This review is helpful to understand the development status of supports and metal components of hydroisomerization catalysts as well as the research status and development prospect of the synthesis of SAPO-11 molecular sieve. The future development direction of the hydroisomerization catalyst and SAPO-11 molecular sieve was summarized and put forward. It is expected to provide a reference for researchers in this field.

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Section: Al 2 O 3 and Its Compositementioning

confidence: 99%

Synthesis, Modification, and Performance Regulation of SAPO-11 Molecular Sieve and Development of n-Alkane Hydroisomerization Catalyst: A Mini-Review

Dai,

Cheng,

Liu

et al. 2024

Energy Fuels

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“…Non-noble metal catalysts usually have weaker hydrogenation/dehydrogenation activity, resulting in a lower yield of isomers. 42 By now, it is already known that it is extremely important to maintain a balance between hydrogenation and isomerization activities in order to obtain an efficient bifunctional hydroisomerization catalyst. 43,44 Such a balance can be achieved both by varying the nature and concentration of the hydrogenation component and by varying the acidity of the zeolite, which is often determined by the zeolite Si/Al ratio.…”

Section: Introductionmentioning

confidence: 99%

“…There are attempts to replace platinum metals with cheaper nickel, − phosphides, , and sulfides of transition metals. Non-noble metal catalysts usually have weaker hydrogenation/dehydrogenation activity, resulting in a lower yield of isomers …”

Section: Introductionmentioning

confidence: 99%

Role of Zeolite Acidity and Ni Content in Hexadecane Hydroisomerization over Ni/ZSM-23 Catalyst

Parfenov,

Pirutko,

Yakovlev

et al. 2024

Ind. Eng. Chem. Res.

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In this work, a series of ZSM-23 zeolite samples having different acidity due to various Si/Al ratios (30, 50, and 100) was synthesized using DMFA as a template. Two series of bifunctional Ni/ZSM-23 catalysts were prepared: the first one with different Ni content and the second one with different zeolite acidity. Samples were characterized by a set of physicochemical methods and tested in a hexadecane isomerization reaction. It was shown that an increase in the nickel content from 2 to 5 wt % significantly enhanced hexadecane conversion and iso-C16 yield. The catalyst activity depends almost linearly on the zeolite acidity. The maximum iso-C16 yield of 76 wt % was achieved over Ni/ZSM-23 catalyst with a Si/Al ratio of 50 having moderate acidity. The results demonstrate the prospects for implementing low-cost nickel-containing zeolite catalysts for an industrially important reaction such as the hydroisomerization of middle distillates and heavier petroleum fractions.

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Influence of nickel loading on the hydroisomerization of n-dodecane with nickel-tungsten oxide-alumina supported catalysts

Cited by 2 publications

References 37 publications

Synthesis, Modification, and Performance Regulation of SAPO-11 Molecular Sieve and Development of n-Alkane Hydroisomerization Catalyst: A Mini-Review

Synthesis, Modification, and Performance Regulation of SAPO-11 Molecular Sieve and Development of n-Alkane Hydroisomerization Catalyst: A Mini-Review

Role of Zeolite Acidity and Ni Content in Hexadecane Hydroisomerization over Ni/ZSM-23 Catalyst

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