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 118 for “"Green Chemistry"”.
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Advancements in green chemistry approaches to chemical synthesis
Green chemistry approaches in chemical synthesis aim to reduce environmental impact while improving the efficiency and sustainability of chemical processes. In this work, we present two significant advancements in this field. First, the introduction and development of a non-pyrophoric version of …
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Exploring hydrothermal reactions : from prebiotic synthesis to green chemistry
… were explored, whereby emphasis was put on green chemistry. Water at high temperature and pressure acts as a benign solvent. Motivation to work under hydrothermal conditions was well-founded in the tunability of physicochemical properties with temperature, e.g. of dielectric constant, …
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Creating Green Chemistry: Discursive Strategies of a Scientific Movement
… dissertation, I examine the evolution of the green chemistry movement from its inception in the early 1990s to the present day. I focus my study on the discursive strategies employed by leaders of the movement to establish green chemistry and to develop and institute changes in the practice of …
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Applications of Green Chemistry in Asymmetric Transfer Hydrogenation and Chiral Separations
<p>Green chemistry has been applied to all aspects of the life cycle of chemically related products, including design, usage, manufacturing, analysis, and disposal. In this thesis, I focus on the green chemistry applications in organic synthesis and analytical chemistry. More specifically, allylic …
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A Green Chemistry Approach to Designing Bio-based Resins for 3D Printing
… will be investigated and looked at through a green chemistry lens. The concepts explaining the various 3DP technologies, the pros of utilizing such techniques, and the fabrication of 3D printable resins will be explored. Finally, applications of such concepts utilizing bio-based feedstocks …
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Mesoporous Carbon/Silica Encapsulated Molybdenum and Ruthenium Nanocatalysts For Green Chemistry Applications
… recently, owing to advancement in material chemistry and nanotechnology. With well-defined size, shape, composition and structure, nanocatalysts have huge potential to be used as active and selective catalysts for a wide range of catalytic reactions. This PhD project focuses on developing …
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Green chemistry : dense carbon dioxide and water as environmentally benign reaction media
… in an scCO₂/liquid water environment. Nitrogen chemistry, specifically the synthesis of nitrogen heterocycles from amines, was also studied in scCO₂ and scCO₂/liquid water systems. The objective of studying the Diels-Alder cycloaddition of 9-hydroxymethylanthracene with N-ethylmaleimide in scCO₂ …
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Effects of a Green Chemistry Laboratory Design on First- Semester General Chemistry Students' Transformative Experiences in Chemistry
… purpose of this study was to understand if a green chemistry laboratory design facilitated students’ transformative experiences in a first-semester general chemistry course for science majors. The study population consisted of 18 college students enrolled in the course at a small, rural, …
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NATURE AND GREEN CHEMISTRY AS KEY FACTORS FOR THE SYNTHESIS OF HIGH-QUALITY APIS FOR THE PHARMACEUTICAL INDUSTRY
… of an innovative approach to the application of chemistry in all fields with the aim to reduce the environmental impact of pharmaceutical industrial processes. From this perspective, green syntheses are more convenient for pharmaceutical companies and global society due to economic, environmental …
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Mixotrophic growth study of the diatom Phaeodactylum tricornutum and extraction of high-value products from its biomass through green chemistry processes
L'abstract è presente nell'allegato / the abstract is in the attachment
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Comparative metabolomic profiling of phenolics in the desiccation-tolerant “resurrection plant” Myrothamnus flabellifolia (Myrothamnaceae) using conventional and green chemistry-based solvent systems
… markers. Additionally, a preliminary green chemistry-based extraction protocol using Natural Deep Eutectic Solvents was also used to further screen for phenolic compounds, and this was compared against the conventional organic solvent system. Several phenolic compounds not previously …
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Green manufacturing in the medical device industry : a case study
… that I detail how Med Dev intended to build a green manufacturing facility. Understanding all the toxic solvents involved in a polymer synthesis, I thought while building a green manufacturing facility was a positive step toward becoming more environmentally sustainable, why stop there, why not …
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Greening the chemistry curriculum. To embed the concepts of sustainability and environmental responsibility into the chemistry curriculum in order to equip graduates for future practises in the chemical sciences
… by embedding it throughout the entire chemistry curriculum rather than teaching it in standalone lectures. Once this has been established within chemistry it is expected that this will potentially provide a template for other areas of laboratory science within the university. In order …
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Applications of Cobaloxime/Photoredox Co-operative Catalysis Toward Olefin Functionalization
… simultaneously adhering to the principles of green chemistry. This has been achieved through the development of decarboxylative transformations and olefin activation processes that allow access to reactive intermediates via light-driven catalysis. When carried out in the presence of cobaloxime …
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Optimizing xylitol production: a molecular and experimental study of xylose reductase in Candida tropicalis
… impact. The findings contribute to advancing green chemistry principles and industrial bioprocess engineering, offering a cleaner, more efficient approach to xylitol production.
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Novel reaction discovery with rapid high-throughput experimentation via infrared spectroscopy and enzymatic electrochemical oxidation of alcohols
… been devoting numerous research efforts towards green chemistry since the establishment of the Pollution Prevention Act of 1990. The overarching goal of green chemistry is to incorporate environmentally benign reaction design into routine and novel synthesis in order to minimize the use of toxic …
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Size Dependent Antimicrobial Properties of Sugar Encapsulated Gold Nanoparticles
… 25 nm, 60 nm, and 120 nm (± 5 nm) synthesized by green chemistry principles were investigated against both Gram-negative and Gram-positive bacteria. Studies were performed involving the effect of the dGNPs on the growth, morphology and the ultrastructural properties of bacteria. dGNPs were found …
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