Tandem catalysts for the selective hydrogenation of butadiene with hydrogen generated from the decomposition of formic acid

We report for the first time the selective hydrogenation of 1,3-butadiene to butene using formic acid as the hydrogen source with 1 wt% Pd/carbon in a continuous flow reactor. The catalytic results show that the selectivity is even higher when formic acid is used compared to gas hydrogen.

Applications of bimetallic PdCu catalysts

Bimetallic PdCu nanoparticles can be applied as catalysts in a wide range of chemical and electrochemical reactions.

Pd–Au bimetallic catalysts supported on ZnO for selective 1,3-butadiene hydrogenation

The effect of the ZnO morphology on the properties of Pd–Au bimetallic catalysts has been discussed.

Catalytic properties of Al13TM4 complex intermetallics: influence of the transition metal and the surface orientation on butadiene hydrogenation

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-Al₁₃Co₄(100), m-Al₁₃Fe₄(010) and m-Al₁₃Ru₄(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-Al₁₃Co₄(100) and o-Al₁₃Co₄(010). As a result, the following room-temperature activity order is determined: Al₁₃Co₄(100) < Al₁₃Co₄(010) < Al₁₃Ru₄(010) < Al₁₃Fe₄(010). Moreover, Al₁₃Co₄(010) is found to be the most active surface at 110°C, and even more selective to butene (100%) than previously investigated Al₁₃Fe₄(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 Al₁₃TM₄ 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 Al₁₃TM₄ compounds.

Plant-mediated synthesis of AgPd/γ-Al2O3 catalysts for selective hydrogenation of 1,3-butadiene at low temperature

Plant-mediated synthesis of bimetallic AgPd/γ-Al₂O₃ catalysts for selective hydrogenation of low-temperature 1,3-butadiene was reported.

Reaction pathway for partial hydrogenation of 1,3-butadiene over Pt/SiO2

The reaction pathway for partial hydrogenation of 1,3-butadiene over a Pt/SiO₂ catalyst was explored with a combination of in situ diffuse reflectance infrared Fourier transform (DRIFT) spectroscopy, intrinsic kinetics, and density functional theory (DFT) calculations.

Mechanistic insights into complete hydrogenation of 1,3-butadiene over Pt/SiO2: effect of Pt dispersion and kinetic analysis

Gas-phase hydrogenation of 1,3-butadiene was investigated over Pt/SiO₂ catalysts with the aim of understanding the complete hydrogenation of dienes.

Direct amination of benzene to aniline with H2O2 and NH3·H2O over Cu/SiO2 catalyst

Cu/S-1 catalyst activated the N–H bond of NH₃ and C–H bond of benzene leading to the formation of aniline.