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Showing 1 to 14 of 14 for “"Pd catalyst"”.
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Characterization of Anodic Fuel Cell Catalysts Utilizing Various Surface Sensitive Techniques
The spontaneously deposited Pt/Pd catalyst was optimized. The optimum palladium coverage for unsupported platinum black was theta = 0.79, whereas for carbon-supported platinum black it was theta = 1.39. The catalyst was also inspected via EC-IRAS, which indicated the presence of palladium on the …
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New strategies for the synthesis and functionalization of aliphatic amines
… that attempts to meet this challenge. The first Pd-catalyzed methylene β-C−H carbonylation of alkylamines to form substituted β-lactams is reported. Through the synergistic use of a Pd-catalyst and Xanpthos ligand, secondary amines underwent exclusive methylene β-C−H activation in high yields and …
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Development and Applications of Pd Catalysts for C-N Cross-Coupling Reactions
Chapter 1 A procedure for forming a highly active Pd(0) catalyst from Pd(OAc) 2, water, and biarylphosphine ligands has been developed. This protocol generates a catalyst system, which exhibits excellent reactivity and efficiency in the coupling of a variety of amides and anilines with aryl …
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Electron Transfer Processes between Hydrogen Sulfide and Humic Substances - Implications for Anaerobic Sulfur Cycling in Freshwater Ecosystems
… For HA reduced by hydrogen (H2) on a Palladium (Pd) catalyst, even only a formation of Sorg was observed and no inorganic transformation products occurred. X-ray absorption near edge structure (XANES) spectroscopy supported Sorg to be mainly about zerovalent, such as thiols, organic di- and …
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Group 10 Metal Catalytic Olefin Polymerization and Synthesis of Ethylene/Acrylate Block Copolymers
… focuses on developing group 10 metal catalysts for olefin polymerization and synthesis of ethylene/acrylates block copolymers. The distorted sandwich α-diimine Pd catalyst development exhibited high catalytic activity and living ethylene polymerization at low-pressure conditions. The …
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Development of oxorhenium complexes and bimetallic Re-Pd/C catalysts for perchlorate reduction in water
… application of novel bimetallic heterogeneous catalysts combining oxophilic rhenium (Re) species with metallic palladium (Pd) nanoparticles on activated carbon support materials (Re-Pd/C). An oxorhenium(V) complex, Re(O)(hoz)2Cl (hoz = 2-(2’-hydroxyphenyl)-2-oxazoline), is synthesized as the …
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The hydrocracking of long chain n-paraffins under Fischer-Tropsch conditions
… development of hydrocracking techniques and catalysts. The conversion of normal long chain paraffins from the Fischer-Tropsch synthesis to clean distillate fuels is a particular area of interest. The objective of this project is to investigate the hydrocracking of long chain paraffins under …
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Separation And Use Of Oxygenated Byproducts From Non-Catalytically Cracked Triglycerides And Their Methyl Esters
… acid was reacted with ethylene over a palladium (Pd) catalyst to produce renewable vinyl acetate monomer (VAM). The VAM was purified using batch distillation to about 99 wt%. This work successfully demonstrated that a renewable product generated from TAG oil cracking is chemically identical to its …
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Development of a sustainable water treatment technology for oxyanions using palladium-based catalysts: catalyst design, reaction mechanisms, and life cycle assessment
… is catalytic reduction using supported Pd-based catalysts and an electron donor. While the technology is promising, several challenges need to be addressed before it is adapted by water treatment utilities. The overall goal of my thesis is to contribute to the development of catalytic …
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Development of Deactivation-Resistant Catalysts for Pd-Catalyzed C–N Cross-Coupling Reactions
Chapter 1: Introduction to Pd-Catalyzed C–N Cross-Coupling: Rational Biarylphosphine Ligand Design Enhances the Reactivity of Difficult Substrates Transition-metal-catalyzed C−N cross-coupling reactions are an important class of transformations with applications in a variety of fields, and Pd-based …
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Green Diesel Production Via Catalytic Hydrogenation/decarboxylation Of Triglycerides And Fatty Acids Of Vegetable Oil And Brown Grease
… and fatty acids over conventional hydrotreating catalysts suffers from fast catalyst deactivation in the absence of hydrogen combined with high temperatures and high fatty acid content in the feedstock. Additionally, excess hydrogen requirement for hydrodeoxygenation technique leads to high …
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Tailoring Fluorene-based Oligomers for micron and sub-micron sized Photopatterning
… the incorporation of various comonomers such as TPD and bithiophene via Yamamoto reaction. Taking the knowledge of the two preceding generations into account we exploited the acrylate monomer from series two and introduced 30% comonomer. This ensured a sufficient content of acrylates for a fast …
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Mechanism and application of Lewis and Brønsted acid effects in organotransition metal catalysis
… study. Cooperative catalysis – in which multiple catalysts enable increased activity or selectivity versus a single catalyst system – can involve some combination of a transition metal, Lewis acid, and Brønsted acid. Chapter 1 reviews the literature regarding the cooperativity of transition metal …