Viimeksi syötetyt 215 Teknillinen kemia
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High-throughput Processing of Nanocelluloses into Barrier Coatings : A Focus on Nanocellulose Rheology and Multilayer Barrier Properties
(Åbo Akademi - Åbo Akademi University, 22.03.2024)Packaging is an integral part of our modern lives, especially in our interconnected world where nearly all products require some form of packaging. The global packaging market is currently valued at 1 trillion USD, with a ... -
Vegetable oils epoxidation : from batch to continuous process
Acta technologiae chemicae Aboensia : 2023 A/4 (Università Degli Studi di Napoli “Federico II”Åbo Akademi University, 02.02.2024)Epoxides are a class of compounds characterized by the oxirane functional group, a polar three-terms strain ring composed by two carbon atoms and an oxygen atom. These two properties make the oxirane ring a highly reactive ... -
Impacts of Time and Temperature Gradient on the Morphology and Chemical Composition of Superheater Ash Deposits
(Åbo Akademi University, 02.02.2024)The work presented in this thesis focuses on the effect of a temperature gradient on the local composition and morphology of ash deposits formed on heat exchanger tubes of power boilers. Cross-sections of superheater ... -
Hydrodeoxygenation of Lignin-Derived Model Compound for Sustainable Aviation Fuel Production Using Bifunctional Catalysts
Acta technologiae chemicae Aboensia : 2023 A/5 (Åbo Akademi - Åbo Akademi University, 26.01.2024)The development for sustainable and renewable fuels is driven by the current reliance on fossil fuels and a need to reduce contaminant gas emissions and adhere to climate-related regulations. The main challenge for the ... -
Epoxidation of light olefins on titanium silicates
Acta technologiae chemicae Aboensia : 2023 A/3 (Åbo Akademi - Åbo Akademi University, 06.10.2023)The topic of present work was the epoxidation of light olefins on titanium silicate catalysts. Epoxidation of single olefins (ethene, propene, 1-butene and iso-butene) and mixtures of them were investigated. A material ... -
Structure-Property Correlation on Solvent-Fractionated Lignin to Functional Materials
(Åbo Akademi - Åbo Akademi University, 22.09.2023)The abundance of lignin in combination with its impressive properties, i.e., a macromolecule with multifunctional groups, an amphiphilic molecular structure, and a unique nanotechnological advantage of forming nanospheres, ... -
Hydrogen Peroxide as Green Oxidant : Mechanistic Insight in the Direct Synthesis and Application
(Åbo Akademi - Åbo Akademi University, 14.07.2023)In recent years the need to lower the environmental impact of chemical processes and the reduction of the reliance of non-renewable raw materials have been in the focus of academic and industrial research to battle and ... -
Production of γ-valerolactone, a green platform molecule
Acta technologiae chemicae Aboensia : 2023 A/1 (Institut National des Sciences Appliquées de Rouen & Åbo Akademi University, 28.06.2023)Non-renewable feedstock should be replaced with renewable resources in the production of energy, chemical commodities, and materials to increase sustainability. Biomass, especially 2nd generation biomass sources such as ... -
Printable Cell Growth Platform for the Assessment of Biomaterial-cell Interactions : A Focus on Patterns and Mineral Pigments
(Åbo Akademi - Åbo Akademi University, 17.02.2023)Cell-decision making is a highly complex and tightly regulated process that depends on the extracellular environment. In their native conditions, cells sense the immediate surroundings and collect cues from the fluid ... -
Development of advanced oxidation processes for the Finnish pulp and paper industry water treatment
(Åbo Akademis förlag - Åbo Akademi University Press, 04.11.2022)Advanced oxidation processes (AOP) have been developed as a pinnacle of chemical water treatment to face the more tightening environmental limits during the last three decades. Whenever either pure coagulation & flocculation ... -
Experimental and Numerical Studies of Burden Layers at Blast Furnace Charging
(Åbo Akademi - Åbo Akademi University, 21.10.2022)The blast furnace (BF) is the main production unit in the processing of iron ore to molten iron (“hot metal”) in the steelmaking industry. It is a large process with huge throughput and energy consumption, so even a slight ... -
Multifaceted Applications of Nanocellulose-based Materials for Water Remediation
(Åbo Akademi - Åbo Akademi University, 26.08.2022)During the last decades, water pollution has become a severe environmental and health crisis in many countries due to rapid industrialization and urbanization, attracting increasing attention worldwide. As one of the most ... -
Towards a Versatile and Sustainable Platform for Tailor-Made Adhesives
(Åbo Akademi - Åbo Akademi University, 17.06.2022)The main objective of the present thesis work was to explore the possibility to design and synthesize versatile environmental-friendly adhesives and to adjust their properties to be suitable for different purposes by ... -
Experimental and Numerical Analysis of Blast Furnace Drainage
(Åbo Akademi - Åbo Akademi University, 18.03.2022)The thesis studies slag and iron flow in the blast furnace hearth and the complex hearth drainage phenomena by both experiments and numerical simulation. It also presents a mathematical model by which the asymptotic state ... -
Mizoroki-Heck cross-coupling - Palladium based catalysts and operation modes
Acta technologiae chemicae Aboensia : 2021 A/5 (Åbo Akademi University, 16.12.2021)Present market trends in the sector of fine chemicals along with the need for rapid commercialization and less expensive production technologies boosts extensive research in this area. Mass-production of fine chemicals ... -
Reductive catalytic depolymerization of industrial lignin and hemicellulose – process development and intensification
Acta technologiae chemicae Aboensia : 2021 A/4 (Åbo Akademi University & Institut National des Sciences Appliquées de Rouen, 01.10.2021)Modern biorefinery aims at utilizing renewable feedstocks to make a wide range of products such as chemicals, biofuels, and biomaterials while leaving as little residue as possible. Lignocellulosic biomass is a promising ... -
Monomers from vegetable oil feedstock : kinetics, catalysis and thermal risk
Acta technologiae chemicae Aboensia : 2021 A/3 (Åbo Akademi University & Institut National des Sciences Appliquées de Rouen, 09.07.2021)Polyurethanes are among the most important polymers in our everyday life, they are industrially produced via the reaction of polyols and di-isocyanates. This process present multiple severe drawbacks such as high toxicity ... -
Production and testing of magnesium carbonate hydrates for thermal energy storage (TES) application
(Åbo Akademi University, 18.06.2021)I denna avhandling ingår både forskning inom koldioxidavskiljning och lagring genom mineralisering (CCSM) (carbon capture and storage by mineralisation, CCSM) och produktion av dess slutprodukt, magnesiumkarbonathydrat ... -
Development of structured catalyst and reactor technologies for biomass conversion - Continuous production of sugar alcohols
Acta technologiae chemicae Aboensia : 2021 A/2 (Åbo Akademi University, 19.05.2021)Energy-efficient technologies have been an aspiration for chemical industries, especially the design of chemical reactors. Structured catalysts play an important role to achieve this purpose. Several types of structured ... -
Green aviation fuel hydrocarbons from lignocellulosic biomass via hydrothermal liquefaction
Acta technologiae chemicae Aboensia :2021 A/1 (Åbo Akademi University, 21.05.2021)Hydrothermal liquefaction (HTL) of lignocellulosic biomass in primary alcohols is a novel thermochemical method to produce sustainable aviation fuel range cyclic hydrocarbons. In this method, particularly the underutilized ...
