Heterogeneous, Homogeneous, and Enzymatic Catalysis. A Shared Terminology and Conceptual Platform. The Alternative of Time‐Dependence in Catalysis

Swiegers, Gerhard F.

doi:10.1002/9780470384190.ch2

Cited by 3 publications

(1 citation statement)

References 34 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Selective hydrogenation lies at the heart of industrial manufacture of fine chemicals, pharmaceuticals, nutraceuticals, and agrochemicals. [1][2][3][4] To achieve a high yield of target product in an economical, energy-saving, and environmentally benign way, more and more attention has been paid to developing sustainable catalysts for selective hydrogenation. [5][6][7][8] As for heterogeneous metal catalysts, the enhanced catalytic selectivity is mainly attributed to the electronic effects as a result of perturbation of the metal coordinative environment and/or steric effects induced by surface modifiers.…”

Section: Introductionmentioning

confidence: 99%

Thiol Treatment Creates Selective Palladium Catalysts for Semihydrogenation of Internal Alkynes

Zhao

Zhou

Zhang

et al. 2018

Chem

173

158

View full text Add to dashboard Cite

Surface and interfacial engineering of heterogeneous metal catalysts is effective and critical for optimizing selective hydrogenation for fine chemicals. By using thiol-treated ultrathin Pd nanosheets as a model catalyst, we demonstrate the development of stable, efficient, and selective Pd catalysts for semihydrogenation of internal alkynes. In the hydrogenation of 1-phenyl-1-propyne, the thiol-treated Pd nanosheets exhibited excellent catalytic selectivity (>97%) toward the semihydrogenation product (1-phenyl-1-propene). The catalyst was highly stable and showed no obvious decay in either activity or selectivity for over ten cycles. Systematic studies demonstrated that a unique Pd-sulfide/ thiolate interface created by the thiol treatment was crucial to the semihydrogenation. The high catalytic selectivity and activity benefited from the combined steric and electronic effects that inhibited the deeper hydrogenation of C=C bonds. More importantly, this thiol treatment strategy is applicable to creating highly active and selective practical catalysts from commercial Pd/C catalysts for semihydrogenation of internal alkynes.

show abstract