Liquid‐phase hydrogenation kinetics of isooctenes on Ni/Al<sub>2</sub>O<sub>3</sub>

Lylykangas, Mikko S.; Rautanen, Petri A.; Krause, A.O.I.

doi:10.1002/aic.690490614

Cited by 14 publications

(26 citation statements)

References 13 publications

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“…Findings in the present research that 2‐TMP has higher overall reactivity than that of 1‐TMP and double‐bond isomerization plays a significant role during hydrogenation are in contrast to the results reported by Lylykangas et al6–8 using Ni/Al 2 O 3 , Co/SiO 2 , and Pt/Al 2 O 3 catalyst. The most likely explanation for observing significant isomerization can be attributed to the fact that the extent of double‐bond isomerization varies with the nature of the catalyst and decreases in the order: Pd > Ni > Rh > Ru > Os ≈ Ir ≈ Pt 24, 32.…”

Section: Resultscontrasting

confidence: 99%

“…There are two ways of interpreting the above results. Lylykangas et al6 adopted the view that the extent of isomerization was insignificant and could therefore be neglected. The other way to explain the above observations would be to take into account the isomerization.…”

Section: Experimental Observations and Pseudohomogeneous Reaction Schemementioning

confidence: 99%

“…The activity of the hydrogenation catalyst in a CD column reactor should be high enough to achieve almost complete hydrogenation of isooctene; otherwise, the octane number of the final product would be <100. The kinetics of hydrogenation of isooctenes on commercial catalysts such as Ni/Al 2 O 3 , Co/SiO 2 , and Pt/Al 2 O 3 has been reported 6–8. Severe catalyst deactivation through the formation of carbonaceous deposits was observed when Pt/Al 2 O 3 catalysts were used.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Kinetics of liquid‐phase hydrogenation of isooctenes on a Pd/γ‐alumina catalyst

Sarkar

Seth

et al. 2005

AIChE Journal

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Section: Resultscontrasting

confidence: 99%

Section: Experimental Observations and Pseudohomogeneous Reaction Schemementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Kinetics of liquid‐phase hydrogenation of isooctenes on a Pd/γ‐alumina catalyst

Sarkar

Seth

et al. 2005

AIChE Journal

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“…The model of Lylykangas et al [12] is used to describe the reaction kinetics. The only reaction involved is assumed to be the hydrogenation of iso-octene to iso-octane…”

Section: Reactionsmentioning

confidence: 49%

Three-Phase CFD-Model for Trickle Bed Reactors

Gorshkova

Manninen

Alopaeus

et al. 2012

International Journal of Nonlinear Sciences and Numerical Simulation

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Comprehensive CFD-model for reactive flow of gas and liquid in porous catalyst beds was developed and numerically tested. The three phase trickle-bed process involving both gas and liquid phases and the fixed bed of porous catalyst particles includes hydrodynamic forces, mechanical and capillary dispersion, and wetting efficiency.In the present work, the model was extended to include reactions, mass transfer and heat transfer. The stationary gas and liquid inside the porous particles were modeled separately from the bulk gas and liquid phases flowing outside the particles, with convective and diffusive mass transfer between the inner and outer fluids. Reactions were assumed to take place inside the catalyst particles. The process modeled in this work was the hydrogenation of octene in Ni/Al 2 O 3 reactor. The reaction is highly exothermic resulting in evaporation and condensation of the components.All submodels were implemented in Fluent software. Numerical tests were carried out to show that the CFD model allows the investigation of local variations in the reactor, caused for example by bed drying or the effects of irregular liquid feed.

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“…Many of the known catalysts for this latter reaction are based on noble metals, that is, Pd ( 48 ) and Pt ( 49 ). In addition, also Ni ( 50 ) and scarcely Co ( 51 ) gained some attention. Hence, we investigated the performance of Co@Chitosan-700 in the hydrogenation of diisobutene.…”

Section: Resultsmentioning

confidence: 99%