Bimetallic Bifunctional Pt-NiP/Hβ as a Novel and Highly Efficient Catalyst for n-Hexane Isomerization

Yang, Lijuan; Song, Zhaoyang; Yu, Yingmin; Zhu, Lijun; Xia, Daohong

doi:10.1007/s10563-020-09295-4

Cited by 10 publications

(5 citation statements)

References 27 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…These results were in a good agreement with other studies [6,52]. Furthermore, the results of the experiments agreed with Sinfelt and the conclusions of other authors, who had reported that even at the lowest platinum content, the dehydrogenation activity of the catalyst was sufficient to maintain the equilibrium between paraffin and olefin on the catalyst surface [22][23][24][25][26][27][28]. The isomerization rate is therefore controlled by the acidic activity of the catalyst [53].…”

Section: Hydroisomerization Experiments Using Monometallic Pt/hy-zeol...supporting

confidence: 91%

“…Many researchers have investigated the concept of bimetallic catalysts in preparing active, selective and stable catalysts, of which Yang et al examined a novel bimetallic isomerization Pt-NiP/Hβ catalyst by introducing a small quantity of Pt into the NiP compound on the Hβ zeolite [25]. He found that this bimetallic catalyst demonstrated catalytic activity similar to Pt/Hβ and NiP/Hβ catalysts for the hydroisomerization of normal hexane.…”

mentioning

confidence: 99%

“…Lin et al has investigated the reforming of n-heptane by the bimetallic and trimetallic series of catalysts loaded on chlorided alumina and ZSM5-zeolite; the bimetallic catalysts were composed of a supporter loaded with Pt and Sn, and the trimetallic catalysts were the bimetallic doped with cerium [28]. The researchers found that it could enhance the bimetallic catalyst Pt-Sn by adding a third metal (i.e., La, Ce, and Y) as a third promoter to modify the electronic and acidic properties of the supporter and the other added metals [22][23][24][25][26][27][28].…”

mentioning

confidence: 99%

See 2 more Smart Citations

Experimental and Kinetic Study of the Effect of using Zr- and Pt-loaded Metals on Y-zeolite-based Catalyst to Improve the Products of n-heptane Hydroisomerization Reactions

Khalaf

Al-Zaidi

Shakour

2022

Orbital: Electron. J. Chem.

View full text Add to dashboard Cite

The escalating cost of Pt metal has prompted researchers to incorporate other metals into Pt/catalysts to reduce the amount of Pt. In this work, several bimetallic Pt-Zr/HY-zeolite catalysts were prepared by incorporating small amounts of the inexpensive Zr into the Pt/HY-zeolite to form an active and selective catalyst. Results showed that although half of the required platinum metal was used, the catalytic activity of the prepared Pt-Zr/HY bimetallic catalyst was higher than that of the monometallic (Pt or Zr)/HY catalysts, as a result of the improved Lewis acidity of that catalyst that resulted from the addition of the Zr metal; additionally, the branched alkanes' yield also increased. The optimum catalyst was bimetallic, containing 0.5 wt% Pt + 0.5 wt% Zr, which achieved the highest yield of isomers at 70.2 mol%, along with 82.61 and 84.98 mol% for conversion and selectivity, respectively, under 1 MPa and 250°C reaction conditions. In addition, the hydroisomerization reaction kinetic model was achieved, giving good predicted results in agreement with the experimental calculations, with an acceptable relative error. It was found that lower activation energies (about 44.5 kJ/mol) were needed for olefin hydrogenation to iso-paraffins, while higher activation energies were required for i-paraffin hydrocracking (about 138.1kJ/mol).

show abstract

Section: Hydroisomerization Experiments Using Monometallic Pt/hy-zeol...supporting

confidence: 91%

mentioning

confidence: 99%

mentioning

confidence: 99%

See 1 more Smart Citation

Experimental and Kinetic Study of the Effect of using Zr- and Pt-loaded Metals on Y-zeolite-based Catalyst to Improve the Products of n-heptane Hydroisomerization Reactions

Khalaf

Al-Zaidi

Shakour

2022

Orbital: Electron. J. Chem.

View full text Add to dashboard Cite

show abstract

“…Yang investigated a novel bimetallic isomerization of Pt-NiP/Hβ catalyst by incorporating a small quantity of Pt into the NiP compound on Hβ zeolite. He proved that this bimetallic catalyst demonstrated a distinguished catalytic activity compared to Pt/Hβ and NiP/Hβ catalysts for hydroisomerization of normal hexane [31].…”

Section: Introductionmentioning

confidence: 98%

Hydroisomerization of n-Heptane in a Fixed-Bed Reactor Using a Synthesized Bimetallic Type-HY Zeolite Catalyst

Khalaf¹,

Sherhan²,

Shakour³

2022

ETJ

View full text Add to dashboard Cite

“…33 % and 20 %, respectively. The former ones are produced via hydroisomerization of alkanes over acidic catalysts, [17] while butanol can be transformed to aromatics over H‐ZSM‐5 catalyst [18] and its isomer isobutanol over Ga−H‐ZSM‐5 catalyst [18] . In addition, butene is formed catalytically from ethanol over Zn−Y/Beta catalyst [19] .…”

Section: Introductionmentioning

confidence: 99%

Sustainable Aviation Fuel from Syngas through Higher Alcohols

et al. 2022

View full text Add to dashboard Cite

The current review critically summarizes recent developments in transformations of syngas to higher alcohols. Although higher alcohols have found applications as fuel additives, detergents and plastics for a long while, transformation of alcohols to jet fuel has attained recent interest due to an urgent need to develop jet fuels from sustainable sources. Fermentation of lignocellulosic‐based sugars to ethanol as a technology does not compete with the food chain supply being thus a potentially acceptable route if economically viable. An alternative method is to gasify biomass to produce syngas, which can further be transformed to higher alcohols through several pathways. Jet fuel range alkanes are obtained from alcohols via oligomerisation, dehydration and hydrogenation. The highest space time yields of higher alcohols of 0.61 g/(gcath) is obtained over a bimetallic copper‐iron catalyst supported on a hierarchical zeolite at 300 °C and 5 MPa. Furthermore, copper‐cobalt and cobalt‐manganese compositions are promising for the direct synthesis of higher alcohols from syngas, where one of the challenges is to suppress formation of alkanes and CO2 and increase selectivity to higher alcohols. From the mechanistic point of view, it has been proposed to use dual‐site catalysts, where one site promotes hydrogenation, while the other site is required for the chain growth. In addition to selection of the optimum reaction conditions and catalyst properties, kinetic modelling, thermodynamics and scale up issues are discussed.

show abstract

Bimetallic Bifunctional Pt-NiP/Hβ as a Novel and Highly Efficient Catalyst for n-Hexane Isomerization

Cited by 10 publications

References 27 publications

Experimental and Kinetic Study of the Effect of using Zr- and Pt-loaded Metals on Y-zeolite-based Catalyst to Improve the Products of n-heptane Hydroisomerization Reactions

Experimental and Kinetic Study of the Effect of using Zr- and Pt-loaded Metals on Y-zeolite-based Catalyst to Improve the Products of n-heptane Hydroisomerization Reactions

Hydroisomerization of n-Heptane in a Fixed-Bed Reactor Using a Synthesized Bimetallic Type-HY Zeolite Catalyst

Sustainable Aviation Fuel from Syngas through Higher Alcohols

Contact Info

Product

Resources

About