Sökning: "Kemiteknik och kemisk teknologi"
Visar resultat 1 - 5 av 151 avhandlingar innehållade orden Kemiteknik och kemisk teknologi.
1. Deactivation of cobalt and nickel catalysts in Fischer-Tropsch synthesis and methanation
Sammanfattning : A potential route for converting different carbon sources (coal, natural gas and biomass) into synthetic fuels is the transformation of these raw materials into synthesis gas (CO and H2), followed by a catalytic step which converts this gas into the desired fuels. The present thesis has focused on two catalytic steps: Fischer-Tropsch synthesis (FTS) and methanation. LÄS MER
2. Zeolite adsorbents and catalysts for the recovery and production of biochemicals
Sammanfattning : Fossil based energy resources are dominating the world’s primary energy consumption for the last century. However, with decreasing crude oil reservoirs and the role they play in global warming by emitting greenhouse gases, the focus has been turned towards improved utilization of renewable resources and the need for new, sustainable fuels and chemicals is more urgent than ever. LÄS MER
3. Fischer-Tropsch Synthesis over Cobalt-based Catalysts for BTL applications
Sammanfattning : Fischer-Tropsch synthesis is a commercial technology that allows converting synthesis gas, a mixture of CO and H2, into fuels and chemicals. This process could be one of the actors in the reduction of oil dependency of the transportation sector. LÄS MER
4. Effects of trace elements in biodiesel on the performance of diesel oxidation catalysts in heavy-duty vehicles
Sammanfattning : To reduce net greenhouse gas emissions, a shift towards adoption of biofuels is ongoing in the transport sector. Heavy-duty diesel vehicles are equipped with aftertreatment equipment, comprising of catalysts and filters, and how this equipment is affected by the use of biofuels is not yet fully understood. LÄS MER
5. Catalytic conversion of biomass-derived synthesis gas to liquid fuels
Sammanfattning : Climate change is one of the biggest global threats of the 21st century. Fossil fuels constitute by far the most important energy source for transportation and the different governments are starting to take action to promote the use of cleaner fuels. LÄS MER
