Comparative study of the hydrogenation of tetralin on supported Ni, Pt, and Pd catalysts

Dokjampa, Siraprapha; Rirksomboon, Thirasak; Osuwan, Somchai; Jongpatiwut, Siriporn; Resasco, Daniel E.

doi:10.1016/j.cattod.2007.01.004

Cited by 50 publications

(47 citation statements)

References 38 publications

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“…5). The trans/cis-decalin ratio obtained on the Pt and Pd catalysts were 0.8 and 3.0, similar to what we found in the previous study [14,28]. By contrast, the PtPd and PtPdF catalysts gave a trans/cis-decalin ratio of about 2.0, which is in between that of the Pt and Pd catalysts.…”

Section: Hydrogenation Of Tetralin In the Absence Of Sulfursupporting

confidence: 90%

Enhanced Sulfur Tolerance of Bimetallic PtPd/Al2O3 Catalysts for Hydrogenation of Tetralin by Addition of Fluorine

et al. 2008

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A series of mono-and bi-metallic Pt-Pd/Al 2 O 3 samples with and without F were studied as aromatic hydrogenation catalysts. The effects of changing the order of impregnation of the Pt precursor and F as well as varying the calcination temperature (300-500°C) were investigated. Temperature programmed reduction (TPR) results demonstrate the presence of a higher fraction of dispersed metal precursor species left on the surface from the impregnation (PtO x Cl y ) on the Pt/Al 2 O 3 sample calcined at high temperature. The impregnation of F before the Pt precursor significantly decreases the interaction between the metal and the support. However, this decrease is not observed when F is impregnated after the metal precursor. For the bimetallic Pt-Pd catalysts, the sample prepared adding F before the metal show a higher degree of Pt-Pd interaction than either the parent Pt-Pd/Al 2 O 3 catalyst or the one prepared with F added later. TPD of ammonia result show the increase in strong acid sites when F is present. Activity tests for tetralin hydrogenation in the presence of 350 ppm dibenzothiophene indicate a better sulfur tolerance for all F-promoted catalysts, especially Pt-Pd.

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Section: Hydrogenation Of Tetralin In the Absence Of Sulfursupporting

confidence: 90%

Enhanced Sulfur Tolerance of Bimetallic PtPd/Al2O3 Catalysts for Hydrogenation of Tetralin by Addition of Fluorine

et al. 2008

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“…The reaction order of the tetralin is chosen as 1 according to the previous reports [3,24,34,35]. The variations of , , H 2 , , and are neglected to simplify the discussion, though they vary along the reactor due to the conversion of the reactant and the generation of heat during the reaction.…”

Section: Kinetic Analysismentioning

confidence: 99%

“…Without phase transition, the changes of hydrogen concentration can be neglected. Thus the reaction order with respect to hydrogen was set to zero in most of the studies [24,35]. The was set to 3 in this study because the hydrogen concentrations in liquid phase and gas phase were greatly different.…”

Section: Kinetic Analysismentioning

confidence: 99%

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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“…tetralin, combined with ring opening of the naphthenic intermediates has been studied extensively in the recent years by several research groups [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15]. Moreover, there are some examples of ring opening processes and catalysts in the patent literature as well [16][17][18][19][20][21] underlining its industrial significance.…”

Section: Introductionmentioning

confidence: 99%

Ring Opening of Decalin Over Zeolite-Supported Iridium Catalysts

Kubička¹,

Kangas

Kumar

et al. 2010

Top Catal

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Selective ring opening of decalin was investigated over various metal-modified zeolites in order to shed light on the key parameters affecting the selectivity to ringopening products at low extent of cracking reactions. Ir-modified zeolites H-Y and H-Beta having different concentration and strength of acid sites were studied in a batch reactor at 250-310°C and 20-60 bar H 2 and their performance was compared with that of Pt-modified zeolites. The concentration of Brønsted acid sites, reaction temperature and hydrogen pressure were shown to be the crucial reaction parameters. To obtain high selectivity to formation of ring-opening products from decalin, mildly acidic Ir-modified Beta was the best choice when the reaction was carried out at temperature of 270°C or lower and at H 2 pressure of 60 bar. Under these conditions the selectivity and yield of ring-opening products exceeded 65 and 60%, respectively.

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Comparative study of the hydrogenation of tetralin on supported Ni, Pt, and Pd catalysts

Cited by 50 publications

References 38 publications

Enhanced Sulfur Tolerance of Bimetallic PtPd/Al2O3 Catalysts for Hydrogenation of Tetralin by Addition of Fluorine

Enhanced Sulfur Tolerance of Bimetallic PtPd/Al2O3 Catalysts for Hydrogenation of Tetralin by Addition of Fluorine

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

Ring Opening of Decalin Over Zeolite-Supported Iridium Catalysts

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