Partial Gas Phase Hydrogenation of Benzene on Sol-Gel Ruthenium Catalysts

Patzlaff, Jürgen; Gaube, Johann

doi:10.1002/(sici)1521-4125(199808)21:8<651::aid-ceat651>3.0.co;2-9

Cited by 7 publications

(4 citation statements)

References 14 publications

(12 reference statements)

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“…Although gas phase packed bed reactors have been investigated since the 1990s, [10][11][12][13][14][15][16] liquid-phase batch-wise approaches with little or no additives are the most commonly used today. Nevertheless, the inspection of reported results, displayed as a plot of cyclohexene selectivity vs. benzene conversion in Fig.…”

Section: Introductionmentioning

confidence: 99%

Benzene partial hydrogenation: advances and perspectives

2015

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The partial hydrogenation of benzene to cyclohexene is an economically interesting and technically challenging reaction. Over the last four decades, a lot of work has been dedicated to the development of an exploitable process and several approaches have been investigated. However, environmental constraints often represent a limit to their industrial application, making further research in this field necessary. The goal of this review is to highlight the main findings of the different disciplines involved in understanding the governing principles of this reaction from a sustainable chemistry standpoint. Special emphasis is given to ruthenium-catalyzed liquid phase batch hydrogenation of benzene.

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Section: Introductionmentioning

confidence: 99%

Benzene partial hydrogenation: advances and perspectives

2015

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“…a yield of 3% are observed [74]. Unfortunately selectivities obtained with this procedure are very low.…”

Section: Partial Hydrogenation Of Benzene To Cyclobexenementioning

confidence: 88%

Selective Hydrogenation of Multiple Unsaturated Compounds

Schimpf

Gaube

Claus

2004

Basic Principles in Applied Catalysis

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“…Sol−gel chemistry is a versatile tool for the preparation of more active and selective catalysts. − The sol−gel technique has been applied to the preparation of a variety of catalysts, , including also metals supported on silica and alumina. − Several papers are dedicated to catalytic hydrogenation over sol−gel catalysts. − …”

Section: Introductionmentioning

confidence: 99%

“…[20][21][22][23][24][25] Several papers are dedicated to catalytic hydrogenation over sol-gel catalysts. [26][27][28][29][30][31][32] Utilization of the sol-gel technique for the preparation of supported bimetallic catalysts allows one to produce catalysts with a homogeneous distribution of finely dispersed metals. Another advantage includes an improved thermal stability of metals, high surface areas, and well-defined pore size distribution (PSD) as well as the ability to control the carrier microstructure.…”

Section: Introductionmentioning

confidence: 99%

Impact of Catalyst Reduction Mode on Selective Hydrogenation of Cinnamaldehyde over Ru−Sn Sol−Gel Catalysts

Hájek¹,

Kumar²,

Salmi³

et al. 2002

Ind. Eng. Chem. Res.

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This work is focused on the investigation and chemical reduction improvement of sol-gel Ru-Sn/SiO 2 catalysts. To clarify the reduction effect, the catalysts were characterized by a range of techniques [e.g., X-ray photoelectron spectroscopy (XPS), Brunauer-Emmett-Teller analysis, pore size distribution, X-ray fluorescence, elementary analysis]. Liquid-phase hydrogenation of cinnamaldehyde (433 K, 70 bar, 2-propanol) was performed in order to evaluate the catalytic properties of synthesized materials. Conventional ruthenium-and sodium-modified catalysts yielded mainly saturated aldehyde, while reduced and nonreduced sol-gel catalysts afforded the formation of unsaturated alcohol with high selectivity. Chemical reduction was essential to increase the catalyst activity. A higher Sn/Ru ratio improved the selectivity to unsaturated alcohol in the cases of reduced and sodium-modified catalysts. Catalyst reduction is essential for the removal of chlorine and carbon residues. The novel coulometric method showed an increase of ruthenium surfaces in reduced catalysts. According to XPS data, Sn improves the ruthenium catalysts' selectivity performance through an electronic effect.

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Partial Gas Phase Hydrogenation of Benzene on Sol-Gel Ruthenium Catalysts

Abstract: shown in Fig. 4 has a 20% 1,2-vinyl, 15% 1,4-cis, and 65% 1,4-trans microstructure which is characteristic for emulsion polymerized butadiene.

Cited by 7 publications

References 14 publications

Benzene partial hydrogenation: advances and perspectives

Benzene partial hydrogenation: advances and perspectives

Selective Hydrogenation of Multiple Unsaturated Compounds

Impact of Catalyst Reduction Mode on Selective Hydrogenation of Cinnamaldehyde over Ru−Sn Sol−Gel Catalysts

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