Novel supported Rh, Pt, Ir and Ru mesoporous aluminosilicates as catalysts for the hydrogenation of naphthalene

Jacquin, M.; Jones, Deborah J.; Rozière, Jacqués; Albertazzi, Simone; Vaccari, Angelo; Lenarda, Maurizio; Storaro, Loretta; Ganzerla, Renzo

doi:10.1016/s0926-860x(03)00314-4

Cited by 80 publications

(8 citation statements)

References 26 publications

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“…Because, even at such a low concentration, sulphur rapidly deactivates the dearomatizing catalyst, a thio-tolerance of the catalyst is required [3]. Various catalytic systems have already been investigated in the literature combining a thio-tolerant metallic phase with supports with different acido-basic surface properties [4][5][6][7][8], with addition of promoters [9][10] or alloying the Pt base catalyst with other metallic elements [11][12].…”

Section: Introductionmentioning

confidence: 99%

Structure and Size of Bimetallic Palladium-Platinum Clusters in an Hydrotreatment

Bazin

Denis²,

Pichon

et al. 2005

Oil & Gas Science and Technology - Rev. IFP

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Résumé -Structure et taille de particules bimétalliques palladium -platine dans un catalyseur d'hydrotraitement -Des catalyseurs bimétalliques PdPt supportés sur alumine ont été synthétisés par imprégnation à sec de bis acétylacétonate. Les formulations Pt 4 Pd/Al 2 O 3 and Pt 6 Pd/Al 2 O 3 dédiées à l'hydrogénation des aromatiques et à la désulfuration, ont été caractérisées par spectroscopie d'absorption X, microscopie électronique à transmission, et titrage H 2 -O 2 . Il a été montré que les métaux étaient associés dans des structures de type coeur-coquille avec un enrichissement préférentiel de la surface des particules en Pd. De plus, la composition optimale pour la réaction d'hydrogénation des aromatiques en pré-sence de soufre est dépendante de la taille des particules. Abstract

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Section: Introductionmentioning

confidence: 99%

Structure and Size of Bimetallic Palladium-Platinum Clusters in an Hydrotreatment

Bazin

Denis²,

Pichon

et al. 2005

Oil & Gas Science and Technology - Rev. IFP

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“…Further increase in H 2 /oil ratio led to the increase in tetralin conversion again. The retested values at H 2 /oil ratios = 333 and 666 were lower than the values in of hydrogen/naphthalene ratio also exhibited the increasedecrease-increase tendency [28]. phase and reacted with tetralin molecule on the catalyst surface.…”

Section: Resultsmentioning

confidence: 82%

The Reactants’ Phase State: A Nonnegligible Factor in Tetralin Hydrogenation Catalysts Evaluation

Luo

Wang

Zhang

et al. 2014

International Journal of Chemical Engineering

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The effects of reactants' phase states (gas-liquid and single gas phase) on tetralin hydrogenation were investigated in the fixed bed. The kinetics of tetralin hydrogenation under different phase states was analyzed. Results showed that, without phase transition, the tetralin conversion increased with the rise of temperature. However, it decreased dramatically around the dew point of the feed at which the reactants' phase state transferred from gas-liquid phase into gas phase. It was also observed that the gas-liquid phase state was favorable to reduce the deactivation of catalyst in the tetralin hydrogenation.

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“…For the improvement of petroleum fractions such as middle distillates and in order to satisfy increasingly stringent regulations, Jacquin et al 16 studied the HYD of naphthalene using rhodium, platinum, iridium, and ruthenium (Rh, Pt, Ir, and Ru, respectively) supported on mesoporous aluminosilicates as novel catalysts at atmospheric pressure operating at 200 and 300 °C, and at 6 MPa at 220 and 340 °C. At atmospheric pressure and 200 °C, all four catalysts showed more than 95− 100% of conversion.…”

Section: Selective Hydrogenation Of Naphthalene To Tetralinmentioning

confidence: 99%

Light Cycle Oil Upgrading to Benzene, Toluene, and Xylenes by Hydrocracking: Studies Using Model Mixtures

Laredo

Pérez-Romo

Escobar

et al. 2017

Ind. Eng. Chem. Res.

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The regular use of light cycle oil (LCO) for diesel fuel production by hydrotreatment (HDT) procedures has been facing difficulties of complying with the currently stricter environmental regulations due to the low quality of this middle distillate with high sulfur, nitrogen, and aromatic contents. An interesting alternative is to obtain valuable petrochemicals from this feedstock. LCO presents a high percentage of diaromatic hydrocarbons (naphthalene derivatives). To facilitate the study of the effect of the experimental conditions, a review regarding the hydrogenation-hydrocracking (HYD-HCK) procedures for obtaining enriched streams containing benzene, toluene, and xylene (BTX) from model mixtures (naphthalene, methylnaphthalenes, and tetralin) is presented. In addition to the economic advantages of using a middle distillate of reduced marketability, this research work opens the door to the development of technologies for obtaining valuable chemicals such as BTX from oil sources. The focus on model mixture studies facilitated the understanding of the involved kinetics and mechanisms and the effect of the experimental conditions on the chemical composition of the products as well.

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Novel supported Rh, Pt, Ir and Ru mesoporous aluminosilicates as catalysts for the hydrogenation of naphthalene

Cited by 80 publications

References 26 publications

Structure and Size of Bimetallic Palladium-Platinum Clusters in an Hydrotreatment

Structure and Size of Bimetallic Palladium-Platinum Clusters in an Hydrotreatment

The Reactants’ Phase State: A Nonnegligible Factor in Tetralin Hydrogenation Catalysts Evaluation

Light Cycle Oil Upgrading to Benzene, Toluene, and Xylenes by Hydrocracking: Studies Using Model Mixtures

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