Selective Hydrogenation of Multiple Unsaturated Compounds

Schimpf, Sabine; Gaube, Johann; Claus, Peter

doi:10.1007/978-3-662-05981-4_3

Cited by 8 publications

(3 citation statements)

References 111 publications

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“…Here, we focus on the comparison of the catalytic properties of Al 13 TM 4 compounds (with TM = Fe, Co, Ru) for the gas-phase hydrogenation of butadiene, which is an important petrochemical reaction for the purification of C4 cuts and the production of butenes before polymerization or alkylation [33][34][35][36]. This reaction is industrially performed on Pd-based catalysts, but it is also catalyzed by non-noble metals such as Fe, Co, and Ni, although with a much lower activity [37,38].…”

Section: Introductionmentioning

confidence: 99%

Catalytic properties of Al₁₃TM₄complex intermetallics: influence of the transition metal and the surface orientation on butadiene hydrogenation

Piccolo

Chatelier

Weerd

et al. 2019

Science and Technology of Advanced Materials

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Complex intermetallic compounds such as transition metal (TM) aluminides are promising alternatives to expensive Pd-based catalysts, in particular for the semi-hydrogenation of alkynes or alkadienes. Here, we compare the gas-phase butadiene hydrogenation performances of o-Al 13 Co 4 (100), m-Al 13 Fe 4 (010) and m-Al 13 Ru 4 (010) surfaces, whose bulk terminated structural models exhibit similar cluster-like arrangements. Moreover, the effect of the surface orientation is assessed through a comparison between o-Al 13 Co 4 (100) and o-Al 13 Co 4 (010). As a result, the following room-temperature activity order is determined: Al 13 Co 4 (100) < Al 13 Co 4 (010) < Al 13 Ru 4 (010) < Al 13 Fe 4 (010). Moreover, Al 13 Co 4 (010) is found to be the most active surface at 110°C, and even more selective to butene (100%) than previously investigated Al 13 Fe 4 (010). DFT calculations show that the activity and selectivity results can be rationalized through the determination of butadiene and butene adsorption energies; in contrast, hydrogen adsorption energies do not scale with the catalytic activities. Moreover, the calculation of projected densities of states provides an insight into the Al 13 TM 4 surface electronic structure. Isolating the TM active centers within the Al matrix induces a narrowing of the TM d-band, which leads to the high catalytic performances of Al 13 TM 4 compounds.

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Section: Introductionmentioning

confidence: 99%

Catalytic properties of Al₁₃TM₄complex intermetallics: influence of the transition metal and the surface orientation on butadiene hydrogenation

Piccolo

Chatelier

Weerd

et al. 2019

Science and Technology of Advanced Materials

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“…The importance of this empirical model can be emphasized considering that no experimental methods for titrating the active sites in gold catalysts are presently known and only careful spectroscopic determinations with CO as a molecular probe allow, in some cases, the evaluation of this parameter [18] .…”

Section: Size-dependent Properties Of Gold 433mentioning

confidence: 99%

Gold Nanoparticles‐catalyzed Oxidations in Organic Chemistry

Pina

Rossi

2007

Nanoparticles and Catalysis

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“…Cyclohexane is not only an important petrochemical product of wide utilization as an organic solvent but also an essential industrial raw material for the production of nylon-6 and nylon-6,6. − The most common method for the production of cyclohexane in industries is the hydrogenation of benzene . As the difference in boiling points of cyclohexane and benzene is only 0.6 °C (cyclohexane: 80.7 °C; benzene: 80.1 °C) and given the similar sizes of the two molecules, their separation through conventional fractional distillation is a highly challenging task. − This involves high energy consumption and complicated processing by industrial separation techniques such as extractive and azeotropic distillation. , Thus, there is a strong need for an alternative, simple, and low-carbon process to achieve cyclohexane–benzene separation.…”

Section: Introductionmentioning

confidence: 99%

Highly Selective Separation of Benzene and Cyclohexane in a Spatially Confined Carborane Metallacage

et al. 2022

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Separation of light hydrocarbons (C 1 −C 9 ) represents one of the "seven chemical separations to change the world". Boron clusters can potentially play an important role in chemical separation, due to their unique three-dimensional structures and their ability to promote a potentially rich array of weak noncovalent interactions. Herein, we report the rational design of metallacages with carborane functionality and cooperative dihydrogen binding sites for the highly selective capture of cyclohexane molecules. The metallacage 1, bearing the ligand 2,4,6-tris(4-pyridyl)-1,3,5-triazine (TPT), can produce cyclohexane with a purity of 98.5% in a single adsorption−desorption cycle from an equimolar mixture of benzene and cyclohexane. In addition, cyclohexene molecules can be also encapsulated inside the metallacage 1. This selective encapsulation was attributed to spatial confinement effects, C−H•••π interactions, and particularly dihydrogen-bond interactions. This work suggests exciting future applications of carborane cages in supramolecular chemistry for the selective adsorption and separation of alkane molecules and may open up a new research direction in host−guest chemistry.

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Selective Hydrogenation of Multiple Unsaturated Compounds

Cited by 8 publications

References 111 publications

Catalytic properties of Al₁₃TM₄complex intermetallics: influence of the transition metal and the surface orientation on butadiene hydrogenation

Catalytic properties of Al₁₃TM₄complex intermetallics: influence of the transition metal and the surface orientation on butadiene hydrogenation

Gold Nanoparticles‐catalyzed Oxidations in Organic Chemistry

Highly Selective Separation of Benzene and Cyclohexane in a Spatially Confined Carborane Metallacage

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Selective Hydrogenation of Multiple Unsaturated Compounds

Cited by 8 publications

References 111 publications

Catalytic properties of Al13TM4complex intermetallics: influence of the transition metal and the surface orientation on butadiene hydrogenation

Catalytic properties of Al13TM4complex intermetallics: influence of the transition metal and the surface orientation on butadiene hydrogenation

Gold Nanoparticles‐catalyzed Oxidations in Organic Chemistry

Highly Selective Separation of Benzene and Cyclohexane in a Spatially Confined Carborane Metallacage

Contact Info

Product

Resources

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Catalytic properties of Al₁₃TM₄complex intermetallics: influence of the transition metal and the surface orientation on butadiene hydrogenation

Catalytic properties of Al₁₃TM₄complex intermetallics: influence of the transition metal and the surface orientation on butadiene hydrogenation