Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 29 for “"dichlorobenzene"”.
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Simultaneous removal of ortho-dichlorobenzene and ethanol vapors in a biotrickling filter : experimental results and process modeling
… a rricrobial consortium known to utilize ortho-dichlorobenzene (o-DCB) as sole carbon and energy source, a culture was developed on o-DCB/ethanol mixtures and a BTF unit was developed and operated with air streams carrying o-DCB and ethanol vapors. Simultaneous removal of the two compounds was …
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The design of a plant for the commercial production of a pesticidal derivative of chloral hydrate
… a Pesticide formed by the condensation of para-dichlorobenzene with chloral.
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Blade dynamics and flux measurements for model seagrass blades in waves and currents
… tracer chemicals (dibromochloromethane and 1,2-dichlorobenzene) for estimating uptake by LDPE, as an analogue to nutrient uptake by seagrass, are described and compared. Mass uptake by blades during flux experiments demonstrated mixed control by both the LDPE-side and water-side mass transfer …
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Novel mesoporous silicates as indoor air pollutant scavengers
… toluene, ethylbenzene, o-xylene, cumene and dichlorobenzene. The indoor air pollutants were actively sampled onto (i) Tenax filled sampling tubes and subsequently analysed by thermal desorption gas chromatography mass spectrometry or (ii) chemically modified C₁₈ silica cartridges analysed by …
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Microbial Growth On Anthropogenic Compounds By Reductive Dehalogenation Or Oxidation
… polychlorinated benzenes but will not use dichlorobenzene. Three strains of Dehalobacter that are able to produce monochlorobenzene from dichlorobenzene (DCB) were sequenced and assembled. Analysis of their genomes shows metabolic specialization for growth by reductive dehalogenation. Their …
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Synthesis and characterization of soluble, high temperature aromatic polyimides
… a solvent system of N-methylpyrrolidinone and σ-dichlorobenzene at temperatures of 170°C to 180°C and times of 24 hours or less. The resulting polyimides were soluble in amide solvents at concentrations of 15 to 20 percent (w/v) at 25°C, were fully cyclodehydrated as determined by non-aqueous …
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Exposure to Volatile Organic Compounds and Effect on Neurobehavioral Function.
… 0.216* with SRTT and 0.130* with SDST for 1,4-Dichlorobenzene, 0.097* with SDST for 1,1,2-Trichloroethane, 0.098* with SDLT for Chloroform, and 0.115* with SDLT for Dibromochloromethane (* p<0.05) suggesting possible neurobehavioral effects. Study results provided pilot data of exposure status …
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Synthesis of poly(arylene ether sulfone)-polyimide segmented copolymers
… procedure with NMP as the solvent and o-dichlorobenzene as the azeotroping agent. The polysulfone oligomers were reacted into the system via the diamine oligomer. The segmented copolymers demonstrated good solubility characteristics, high thermal stability, and high glass transition …
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Synthesis and characterization of high performance polybenzoxazoles
… an azeotroping solvent, such as toluene or 0- dichlorobenzene. In general, complete cyclization of the oxazole rings could be achieved in as little as 6 hours at 175°C. Unfortunately, generic cyclization conditions were not found. Additionally, phenylethynyl terminated polybenzoxazoles were …
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Design, Synthesis and Biological Evaluation of Novel Cannabinoid Antagonist
… reaction sequence from 1-azido-2,4-dichlorobenzene and commercially available arylacetylenes. From the structure-activity studies the 5-(4-chlorophenyl) congeners exhibited the most potent CB1 receptor affinities relative to other 5-(substituted-phenyl) moieties. The …
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Studies of liquid phase intermolecular interactions utilizing ¹H and ¹³C dynamic nuclear polarization and nuclear magnetic resonance techniques
… Three aromatic molecules: nitrobenzene, 1, 2-dichlorobenzene, and toluene, are studied by the solution ¹³C DNP technique. The scalar components for the ring carbons are sensitive to the electronic environment of these carbon sites. A spin delocaliztion model is used, for the first time, to …
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Photocatalysis in a novel semiconducting optical fiber monolithic reactor for wastewater treatment
… the photocatalytic degradation of o-dichlorobenzene (DCB) and phenanthrene (PHE). This configuration provides a high surface area for catalyst coating per unit reactor volume, reduces the mass transport limitations, and allows for high throughput at low pressure drop. Using optical …
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Stability, transport and applications of polyaphrons in porous media
… of our novel procedure on removing 1,2-dichlorobenzene (DCB) from a sand column. The results show that our procedure effectively prevents downward migration of DCB during surfactant flooding. Depending on the injection strategy and initial distribution of DCB, as mush as 97% of the DCB …
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Exposure to hazardous air pollutants in homes
… benzene, chloroform, carbon tetrachloride, p-dichlorobenzene (p-DCB), ethylbenzene, formaldehyde, methylene chloride, methyl tert-butyl ether (MTBE), styrene, trichloroethylene and tetrachloroethylene. Results indicate that Hispanics and non-Hispanic whites had median cumulative cancer risks …
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Integration of electrodeposited PdNi alloys with silicon and carbon nanotube electronics
… presented. The CNTs are spin coated from a 1,2-dichlorobenzene dispersion and contacted with electrodeposited PdNi. The PdNi-Si Schottky barrier is used to suppress the current through the Silicon substrate during electrical characterisation. The operating restrictions imposed by the direct …
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Infrared and x-ray spectroscopic studies of the copper(II) oxide mediated reactions of chlorinated aromatic precursors to PCDD/F
… investigate the reactions of 2-chlorophenol, 1,2 dichlorobenzene and chlorobenzene with a copper oxide containing silica surface. Chemisorption mechanisms were determined and kinetics of the adsorption were measured. It was discovered that chlorinated benzenes react to produce the same phenolate …
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Redutive Dehalogenation of Chlorinated Alkanes by Novel Bacteria at the PetroProcessor of Louisiana Inc. Superfund Site
… chlorinated benzenes (1-chlorobenzene and 1,2-dichlorobenzene) were not dehalogenated. Phylogenetic analysis based on 16S rRNA gene sequences showed these isolates to represent a new lineage within the Chloroflexi. Their closest previously cultured relatives are “Dehalococcoides” strains with …
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Controlling Site-Selectivity in Palladium-Catalysed Cross-Coupling Reactions using Non-Covalent Interactions Between Ligand and Substrate
… Other Brønsted acidic groups on the 3,4-dichlorobenzene motif were also shown to participate in the electrostatic interaction including carboxylic acids, phosphoric acids, sulfonic acids, and sulfamic acids. Following oxidative addition alkynes (Sonogashira coupling), anilines …
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Novel high performance thermosetting polyimides
… procedure utilizing NMP as the solvent and o-dichlorobenzene as the azeotroping agent reproducibly exhibit fully imidized soluble polyimides with <Mw>/<Mn> values of ~2.0 determined by gel permeation chromatography (Universal Calibration). Successful molecular weight control was achieved using …
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Synthesis and functionalization of novel meso-substituted tetrabenzotriazaporphyrins
… Kumada cross-coupling reaction using 1,2-dichlorobenzene as precursor, followed by electrophilic bromination and Rosenmund von Braun cyanation reaction in the last step. An alternative route towards the formation of the phthalonitriles was used in order to synthesise alternative target …
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