Search for dissertations about: "Sustainable transports"

Showing result 1 - 5 of 19 swedish dissertations containing the words Sustainable transports.

  2. 1. The Tragedy of Ordinarity : Culture Constraints on Sustainable Development Based on Public Transport

    Author : Stephan Bösch; Gerhard Gustafsson; Reinhold Castensson; Karlstads universitet; []
    Keywords : SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; culture; transport culture; public transport; geography; transport geography; sustainable development; sustainable transport; kultur; transportkultur; kollektivtrafik; geografi; transportgeografi; hållbar utveckling; hållbara transporter; Human geography; Kulturgeografi; Kulturgeografi; Human Geography;

    Abstract : This licentiate thesis consists of two free-standing papers and a linking essay that links the papers by articulating an overall research aim and common theoretical background. The research aim is kept general and focuses on the role public transport can play in sustainable development. READ MORE

  4. 2. Spectroscopic characterisation of surface hydroxyls during catalytic methane oxidation

    Author : Peter Velin; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; XAS; Water inhibition; Supported palladium; Sustainable transports; Methane oxidation; Operando spectroscopy; DRIFTS; Environmental catalysis;

    Abstract : Implementation of methane rich fuels as to develop sustainable vehicle transports requires improved catalytic exhaust aftertreatment technologies to convert engine-out methane emissions to carbon dioxide and water by total oxidation. A main challenge is that water formed during combustion inhibits the methane oxidation reaction even over the most active palladium-based catalysts presently known. READ MORE

  5. 3. Deactivation of after-treatment catalysts for bio-fuelled engines

    Author : Johanna Englund; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Environmental catalysis; Cu-CHA; Vanadium; Supported palladium platinum; Biodiesel; Biogas; NOx reduction; Methane oxidation; Sustainable transports;

    Abstract : To decrease the emissions of anthropogenic CO2 from vehicles one option is to increase the utilization of biobased fuels. However, there are challenges with this transition, one being the mitigation of emissions of the potent greenhouse gas methane, which is the main constituent of biogas. READ MORE

  6. 4. Spectroscopic investigation of palladium catalysts during wet methane oxidation

    Author : Peter Velin; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Methane oxidation; Water inhibition; XAS; DRIFTS; Supported palladium; Environmental catalysis; Operando spectroscopy; Sustainable transports;

    Abstract : Abatement of the strong greenhouse gas methane in vehicle applications by use of catalytic end-of-pipe technologies is challenging due to the prevailing reaction conditions with low temperatures and high water content. In this thesis, the mechanisms behind low-temperature water inhibition of lean methane oxidation over palladium-based catalysts have been studied using an integrated experimental approach including wet-chemical preparation of model catalysts with systematic variation of key performance parameters, transient measurements of reaction kinetics in chemical flow reactor, and operando infrared and X-ray absorption spectroscopic characterisation. READ MORE

  7. 5. Government vs Market in Sustainable Residential Development? : Microdata analysis of car travel, CO2 emission and residence location

    Author : Xiaoyun Zhao; Johan Håkansson; Kenneth Carling; Stefan Schönfelder; Högskolan Dalarna; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; Allmänt Mikrodataaanalys - transporter; General Microdata Analysis - transports;

    Abstract : Increasing car usage and travel demands between residential locations and destinations in order to fulfill the various needs of residents is a primary cause of CO2 emissions. To win the battle against climate change, a better understanding of the question relating to which urban residential form may most effectively mitigate the CO2 emissions is the key pathway. READ MORE