Essays about: "Stream Chemistry"

Showing result 1 - 5 of 29 essays containing the words Stream Chemistry.

1. 1. Uranium nitride synthesis by gas/gas reaction of UF6 and NH3

   University essay from KTH/Fysik

   Author : Serena Ambrosino; [2024]
   Keywords : Uranium nitride; synthesis; ammonolysis; uranium hexafluoride; uranium tetrafluoride; ammonia; X-ray diffraction; microscopy; Urannitrid; syntes; ammonolys; uranhexafluorid; urantetrafluorid; ammoniak; röntgendiffraktion; mikroskopi;

   Abstract : This thesis project aims to develop an innovative technique for the production of high-purity uranium nitride (UN) through the ammonolysis of fluorides. The desired objective is to perform a controlled gas/gas reaction between uranium hexafluoride (UF6) and ammonia (NH3) at 800°C. READ MORE

3. 2. Effect of powder spray drying on catalyst formulation in tablet form

   University essay from Lunds universitet/Kemiteknik (CI)

   Author : Kajsa Wahlgren; [2023]
   Keywords : Spray dryer; Catalyst; Powder; Flowability; Chemical engineering; Technology and Engineering;

   Abstract : Heterogenous catalysts consist of a large surface area support material applied with the catalytic active phase, and the activity of a catalyst is often correlated to the surface area per volume. Support materials often need to be processed further to be optimal for specific processes. READ MORE

4. 3. Geological characterization of rock samples by LIBS and ME-XRT analytical techniques

   University essay from Luleå tekniska universitet/Geovetenskap och miljöteknik

   Author : Nsioh Elvis Nkioh; [2022]
   Keywords : geological characterization; analytical techniques; LIBS; ME-XRT; SEM; element maps; SEM-EDS; secondary electrons; rock samples; automated ore microscopy; SEM-Zeiss Merlin; element weight percentages; element oxide percentages; scanning techniques; analytical methods; laser induced breakdown spectrometry; multi energy x-ray transmission; scanning electron microscope; carbon coating; mineralogical classification; element composition; rock chemistry; rock chemical composition;

   Abstract : One of the major challenges in earth sciences and mineral exploration has been to determine with high accuracy and at a fast rate the elemental composition as well as the general chemistry of a rock sample. Many analytical techniques e.g. READ MORE

5. 4. The role of bed sediments for fractionation of phosphorus in remediated ditches in Sweden

   University essay from SLU/Dept. of Soil and Environment

   Author : Emma Ryding; [2022]
   Keywords : Phosphorus fractionation; agricultural stream; sediment; two-stage ditch; eutrophication;

   Abstract : Sweden’s environmental quality objectives “A varied agricultural landscape” and “Zero eutrophication”, aims to ensure food production while reducing negative impact from fertilizers on the environment. The input ceilings of nutrient concentrations in the Baltic Sea are still critical. READ MORE

6. 5. Polymerization of isatin towards polymers for anion exchange membranes and gas separation applications

   University essay from Lunds universitet/Kemiska institutionen

   Author : Simone Facchini; [2022]
   Keywords : organic chemistry; membranes; isatin; polymers; Chemistry;

   Abstract : In a world where the problem of energy resources, pollution and all aspects related to these issues becomes more and more dominant, a greater commitment is needed in the search for solutions. The goal of this project is to make a contribution to the research and development of new materials to reduce the environmental impact in some fields. READ MORE