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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 58 for “"Cresol"”.
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Some bromo derivatives of m-cresol
Thesis (M.S.)--Michigan State College of Agriculture and Applied Science. Dept. of Chemistry, 1931
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Shape-selective methylation of meta-cresol
Phenol, cresols and xylenols are of enormous industrial importance, mainly in the polymers (resins), electronics, pesticides, pharmarceutical, paint and dye industries. The selective production of cresols and xylenols is difficult, partly owing to the number of different isomers that occur and, …
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Enthalpy measurements of benzene and m-cresol
Includes bibliographical references (pages 61-62).
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Odor sensitivity and the presence of p-cresol
… Bomback & Raff, 2011). It is thought that p-cresol is the specific uremic toxin to cause a decline in olfactory function because it is not easily filtered out of the blood during dialysis (Meijers et al., 2010). The study sought to set up a control group for future studies by demonstrating …
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Cresol Novolac/Epoxy Networks: Synthesis, Properties, and Processability
… molecular weight, 2,6-dimethylphenol endcapped cresol novolac resins have been synthesized and characterized. The molecular weight control was achieved by adjusting the stoichiometric ratio of cresol to 2,6-dimethylphenol and using an excess of formaldehyde. A dynamic equilibrium reaction was …
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Enthalpy measurements of the M-cresol/quinoline binary system
Includes bibliographical references.
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Thymol synthesis by acid catalysed isopropylation of m-cresol
… for thymol synthesis from iso-propanol and m-cresol mediated by a commercially available H-MFI zeolite catalyst. A preliminary investigation uncovered seeming anomalies in the course of the synthesis process, in particular counterintuitive trends with respect to m-cresol conversion and thymol …
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Thermal reactions of aromatic hydrocarbons and m-cresol over calcium oxide
Thesis (Sc. D.)--Massachusetts Institute of Technology, Dept. of Chemical Engineering, 1986.
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The formation of cyanoborate liquid clathrates with water or cresol as promoters
… electronic nature of the promoters, water and cresol, caused differences in the ease of promoting cyanoborate liquid clathrate formation, in the stability and composition of the liquid clathrates formed, and in the interactions between the promoter and the components of the liquid clathrate …
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Condensation of tert-butyl and tert-amyl alcohols with para-cresol in the presence of aluminum chloride
Thesis (M.S.)--Michigan State College of Agriculture and Applied Science, 1938
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Bioremediation of Phenolic Compounds in Circulating Packed Bed Bioreactor
… containing phenolic compounds such as phenol and cresols pose a high risk to human health and natural environment. Compared to physicochemical methods, bioremediation is an attractive alternative for removal of phenolic compounds from contaminated waters. This research aimed to evaluate …
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ESG (environmental, social and governance) em uma cooperativa de crédito: um estudo de caso na Cresol Minas Gerais
… da agenda ESG na cooperativa de crédito Cresol Minas Gerais, evidenciando as motivações, elementos condicionantes, práticas implementadas, indicadores para monitoramento, estratégias e desafios. A pesquisa adotou uma abordagem qualitativa, de natureza exploratória e descritiva, envolvendo …
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Alkylation of phenol with methanol over H-ZSM-5, H-Beta, H-Mordenite, H-USY and H-MCM-22
… commercially important lower alkylphenols are cresols (methyl phenols) and xylenols (dimethyl phenols). The main markets for alkylphenol products are nonionic detergents, phenolic resins, polymer additives and agrochemicals. Of the western world cresol market, 55% originates from synthetic …
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Isomerisation of cresols over zeolites HZSM5, HBeta and HMordenite
… two problems are experienced with regards to cresol isomers. Firstly, insufficient quantities are recovered from natural sources such as coal tar and refinery caustics and secondly the isomer distribution is inflexible and does not always meet market demand. Thus, having technology which …
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Acid catalysed alkylation of diphenyl ether with methanol over shape-selective zeolites
… weakly acidic catalysts yields predominantly o-cresol, whilst catalysts with medium acidity yield primarily o- and p-cresol, with significant anisole formation at lower temperatures (≈ 200°C). m-Cresol is, however, formed with significant selectivity over strongly acidic catalysts or at higher …
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Catalytic oxidation of cresols using molecular ozone
Catalytic oxidation of cresols using molecular ozone. The environment, both in general and specifically our habitable segment is currently under threat from surfacing chemical pollutants that are generated mostly from pharmaceutical and industrial sectors. The extended use of cresols (meta-, …
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Dye sensitized photooxidation of toxic organic wastewaters
… a sensitizer to degrade ortho-, meta-, and para-cresol, carbofuran and acrylonitrile. Significant reductions were found when aqueous solutions of the cresol isomers and carbofuran were illuminated and aerated in the presence of methylene blue. An average of 78% reduction of cresol was observed in …
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A study of the mannich reaction with certain phenols, of the causes of formation of coloured products and the prevention of their occurence
… from dimethylamine, formaldehyde and phenol, m-cresol, eugenol, p-tent-pentylphenol, p-tert butylphenol, p-iso-propylphenol, 3,1,5-trimetbylphenol, resorcinol, 3-pentadecylphenol and the component phenols of cashew nut shell liquid (CNSL) have been prepared. Mannich bases have also been prepared …
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Thymol synthesis via alkylation of m-cresol with isopropanol the effect of the SiO2/AI2O3 ratio of H-MFI catalysts on catalyst activity and thymol selectivity
… of thymol of selective isopropylation of m-cresol on the 6-position. The aim of this study was to investigate the effect of the SiO2/AI2O3 ration, i.e. the aluminium content of H-MFI (H-ZSM-5) zeolites. The results are interpreted based on a deep analysis of the reaction network.
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Crystallization and melting behavior of an aromatic semicrystalline polyimide, LaRC CPI-2
… solvents, dimethylacetamide (DMAc) and m-cresol present with dramatically different melting, melt stability and crystallization properties. Though the chemical architecture and crystal lattice structure are the same, the powders synthesized in DMAc display dual melting transitions at ca. …
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