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Photocatalytic Cleavage of C–C Bond in Lignin Models under Visible Light on Mesoporous Graphitic Carbon Nitride through π-π Stacking Interaction
10.1021/acscatal.8b00022 2018-04-13 Photocatalysis is a potentially promising approach to harvest aromatic compounds from lignin. However, the development of an active and selective solid photocatalyst is still challenging for lignin transformation under ambient conditions. We herein report a m... |
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Structural Changes in Deactivated Fluid Catalytic Cracking Catalysts Determined by Electron Microscopy
10.1021/acscatal.8b00649 2018-04-13 Fluid catalytic cracking, an important process in the chemical industry, uses porous composite particles to convert the heavy fractions of crude oil into transportation fuels and chemical feedstocks. The employed particles, a spherical composite of zeolite an... |
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Uses of K2S2O8 in Metal Catalyzed and Metal Free Oxidative Transformations
10.1021/acscatal.8b00743 2018-04-13 Carbon-carbon/carbon-heteroatom bond formation via oxidative transformation presents one of the state-of-the-arts at the frontiers of chemistry. Potassium persulfate (K2S2O8) has emerged as a cost-effective, suitable inorganic oxidant for a wide array of oxid... |
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Boosting Photocatalytic Hydrogen Production of Porphyrinic MOFs: The Metal Location in Metalloporphyrin Matters
10.1021/acscatal.8b00764 2018-04-13 Metal-organic frameworks (MOFs) have demonstrated great potentials toward catalysis, particularly in the establishment of structure-property relationship. Herein, an unusual OOP (out-of-plane) porphyrin based MOF, synthesized by controlling the metal ion rele... |
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Rationalizing the Reactivity of Bimetallic Molecular Catalysts for CO2 Hydrogenation
10.1021/acscatal.8b00803 2018-04-13 We have recently reported the heterobimetallic nickel–gallium complex, NiGaL (where L represents the tris(phosphinoamido)amine ligand, [N(o-(NCH2Pi-Pr2) C6H4)3]3−), which is the most active Ni-based molecular catalyst for CO2 hydrogenation to date. Understand... |
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Taming Nickel-Catalyzed Suzuki-Miyaura Coupling: a Mechanistic Focus on Boron-to-Nickel Transmetalation
10.1021/acscatal.8b00933 2018-04-13 The mechanism of boron-to-nickel transmetalation –the key step of the nickel-catalyzed Suzuki-Miyaura (S- M) coupling– was examined both experimentally and theoretically. Dinuclear μ hydroxo-bridged complexes formed by reaction of trans-[ArNi(PR3)2X] with hyd... |
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Activating Titania for Efficient Electrocatalysis by Vacancy Engineering
10.1021/acscatal.8b00719 2018-04-13 Pursuing efficient and low-cost electrocatalysts is crucial for the performance of water–alkali electrolyzers toward water splitting. Earth-abundant transition-metal oxides, in spite of their alluring performances in the oxygen evolution reaction, are thought... |
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Theoretical Studies on the Catalytic Mechanism and Substrate Diversity for Macrocyclization of Pikromycin Thioesterase
10.1021/acscatal.8b01156 2018-04-13 Polyketide synthases (PKSs) share a subset of biosynthetic steps in construction of a polyketide, and the offload from the PKS main module of specific product release is most often catalyzed by a thioesterase (TE). In spite of the fact that various PKS system... |
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A Water-Assisted Catalytic Mechanism in Glycoside Hydrolases Demonstrated on the Staphylococcus aureus Autolysin E
10.1021/acscatal.8b01064 2018-04-13 Autolysin E (AtlE), from Staphylococcus aureus, is a cell-wall-degrading enzyme that is a potential drug target. It is a member of the glycoside hydrolase (GH) class, enzymes that commonly have either two catalytic residues and hydrolyze their substrates by i... |
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Catalytic Role of Conserved Asparagine, Glutamine, Serine, and Tyrosine Residues in Isoprenoid Biosynthesis Enzymes
10.1021/acscatal.8b00543 2018-04-13 We report the results of an investigation into the catalytic role of highly conserved amide-containing (asparagine, glutamine) and OH-containing (serine, tyrosine) residues in several prenyltransferases. We first obtained the X-ray structure of cyclolavanduly... |