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Showing 1 to 20 of 183 for “"Oligomerization"”.
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Oligomerization of higher olefins
… points.The ligands were then tested for the oligomerization of ethylene and 1-hexene. The chromium complexes were tested for the oligomerization of 1-hexene.
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Palladium catalysed oligomerization of 1-alkynes
The oligomerization of 1-pentyne using palladium acetyl acetonate catalyst with various solvents and ligands was investigated. An equimolar mixture of HOAc and Et N proved to be a superior solvent. The major product observed in most cases was the dimer, 6-methylene-nona-yne, although both cis and …
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Acetylation regulates Thioredoxin Reductase activity and oligomerization
The Thioredoxin (Trx) system provides the cell with robust defense against oxidative stress and regulates the function of nearly every cellular process through the reduction-oxidation (redox) regulation of proteins. The Trx system is involved in the development of many diseases ranging from cancer …
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HIV-1 Vpu Oligomerization in Membrane Mimetics
… this work are interpreted in the context of Vpu oligomerization relative to previous molecular dynamics simulations, the effect of membrane mimetic environment, and implications for Vpu interactions with host cell target proteins.
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The oligomerization of propene over cobalt catalysts
… cobalt catalysts for high pressure propene oligomerization. This work was carried out as part of a larger research effort to upgrade light olefins to liquid fuels in the distillate range. The supports investigated included activated carbon, alumina, silica alumina, synthetic mica …
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The oligomerization of propene over nickel synthetic mica-montmorillonite
The catalytic oligomerization of propene to liquid fuels using synthetic mica montmorillonite (SMM) as well as the effect of incorporating nickel into the lattice and nickel, cobalt and zinc into the interlayer spaces was investigated. NiSMM is more active for propene oligomerization than SMM, …
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The selective oligomerization of ethylene with metal-organic frameworks
… heterogeneous catalysts for selective ethylene oligomerizations, with an emphasis on developing new metal-organic framework (MOF) catalysts for the selective dimerization of ethylene to 1-butene. The ability to tune the catalytically active site of a solid at the molecular level places MOFs in …
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Molecular Mechanisms of Serotonergic Signaling: Role in Neuronal Outgrowth and Receptor Oligomerization
Rolle des 5-HT7/G12 Signalwegs bei der Morpho- und Synaptogenese. Der Neurotransmitter Serotonin (5-Hydroxytryptamin oder 5-HT) moduliert, zusätzlich zu seiner Funktion als Neurotransmitter, verschiedene Aspekte der frühen neuronalen Differenzierung, einschließlich des Neuritenwachstums und der …
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Propene oligomerization over steam dealuminated and boron and phospherous modified ZSM-5
… the linearity of the liquid product of propene oligomerization. Boron was incorporated into the zeolite framework by inclusion in the synthesis gel. Boralite catalysts made in this way and containing very low Al contents had only weak acidity as was evident from only one, low temperature NH3 …
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The Challenge of Selectivity in Ethylene Oligomerization: Ligand Design and Metal Valence States
Catalytic ethylene oligomerization is a well understood industrially viable process. The large majority of scientific literature and patents concerning this process has been developed with the use of chromium catalysts. Commercial systems producing selective tri/tetramerization, non-selective …
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Investigation of the Localization, Oligomerization Status, and Binding Activities of Maize Sucrose Synthase
Recombinant SUS1 C-terminal truncations showed that even the first 50 amino acids of SUS1 could bind to microsomes from kernels as well as to cellulose. The secondary structure of the first 50 amino acids of SUS may be causally involved in the binding activities. Taken together, the results …
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Synthesis and characterization of nickel, palladium and chromium complexes as olefin oligomerization catalysts
New N-functionalized 2-phosphinobenzaldimino (P^N) ligands (L) bearing 3-picolyl (41), furfuryl (42), thiophene-2-methyl (43), thiophene-2-ethyl (44), and benzyl (45) groups have been prepared in good yield. In addition, 2-iminopyridyl (N^N) (46), 2-bromobenzaldimino (47), and 2-phenoxyimino (O^N) …
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Synthesis, characterisation and olefin oligomerization over nickel, cobalt and zinc substituted synthetic mica montmorillonite
Nickel, cobalt and zinc were substituted for structural octahedral aluminium in SMM. X-ray diffraction, together with elemental analysis, confirmed that a 2: 1 layered aluminosilicate had been formed. The inclusion of these metals facilitated the crystallisation of the SMM structure in the …
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Methanol conversion to olefins and propene oligomerization over modified SAPO-34 and dealuminated mordenite
… methanol conversion to light olefins and propene oligomerization to a distillate type product, respectively. In this study, these catalysts were modified in various ways and the effect of these modifications on the activity and selectivity of the above two reactions investigated. SAP0-34, a …
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Mass transport in metal-organic frameworks as a limiting step in size-selective oligomerization
… to our knowledge no reports of size-selective oligomerization catalysis have been reported to date. Herein, chemically stable Zr based MOFs, namely UiO-67 and PCN-777, are investigated as possible candidates to promote size-selective oligomerization catalysis. Using acylated propylene-glycol …
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Olefin oligomerization reactions theoretical studies using cyclometallated palladium(II) catalysts and experimental studies on platinum(II) analogues
Ethylene oligomerization reactions catalysed by cyclometallated palladium(II) N-benzylidenebenzylamine complexes were studied theoretically. Density functional theory (DFT) calculations are reported on the interaction of various MAO models with the methylated pre-catalyst. The neutral MAO …
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The application of novel multinuclear catalysts derived from dendrimeric ligands in the polymerization and oligomerization of unsaturated hydrocarbons
… were evaluated as catalyst precursors in the oligomerization of α-olefins such as ethylene and 1-pentene, using aluminium alkyls such as EtAlCl2 and modified methylaluminoxane (MMAO) as activators. All the dendrimeric catalysts evaluated are active in the oligomerization reactions. From …
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The role of the N domain in substrate binding, oligomerization, and allosteric regulation of the AAA+ Lon protease
… that the N domain integrates substrate binding, oligomerization, and regulation of the catalytic activities of Lon.
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Functional and molecular approaches to study mu and delta opioid receptor hetero-oligomerization in a model of neuropathic pain
Neuropathic (NP) pain is a debilitating form of chronic pain that can result from a variety of disease states that target the sensory nervous system. NP pain can manifest as burning or shooting pain, and is commonly refractory to traditional analgesics including opioids. Clinically used opioids …
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