Search for dissertations about: "monolith"

Showing result 1 - 5 of 38 swedish dissertations containing the word monolith.

  2. 1. Monolith Reactors in Three-Phase Processes

    Author : Rolf Edvinsson; Chalmers tekniska högskola; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; desulfurization; methanol synthesis; acetylene hydrogenation; Taylor flow; monolith reactor; three-phase; computational fluid dynamics;

    Abstract : The use of monoliths in chemical processes has been studied with the emphasis on liquid-phase hydrogenations. A monolithic catalyst consists of many narrow, parallel channels with catalytically active species either incorporated into the wall itself or into a layer of a porous oxide deposited on the wall (a washcoat). READ MORE

  4. 2. Monolith catalysts for car exhaust : experimental and theoretical studies of oxygen storage, flow and mass transfer

    Author : Anna Holmgren; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; monolith; car-exhaust; CFD simulations; turbulence; Pt CeO2 Al2O3; catalysis; effective diffusivity; oxygen storage; flow distribution; mass transfer;

    Abstract : .... READ MORE

  5. 3. Mathematical Modelling in Catalytic Automotive Pollution Control

    Author : Lennart Andersson; Chalmers tekniska högskola; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; automotive pollution control; matematical modelling; monolith; selective catalytic reduction; mass transfer;

    Abstract : Design and control of honeycomb monolith reactors for catalytic automotive pollution control by mathematical modelling of the reactor has been studied. One aspect of the design has been that the use of metallic monolithic catalysts for automotive emission control raises certain optimization possibilities. READ MORE

  6. 4. Monolithic separation media synthesized in capillaries and their applications for molecularly imprinted networks

    Author : Julien Courtois; Knut Irgum; Ruth Freitag; Umeå universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; bupivacaine; etching; phosphorylated tyrosine; poly ethylene glycol ; silanization; transmission electron microscopy; fused silica capillaries; isothermal titration calorimetry; local anæsthetic; molecularly imprinted polymer; monolith; nuclear magnetic resonance; Analytical chemistry; Analytisk kemi;

    Abstract : The thesis describes the synthesis of chromatographic media using several different approaches, their characterizations and applications in liquid chromatography. The steps to achieve a separation column for a specific analyte are presented. The main focus of the study was the design of novel molecularly imprinted polymers. READ MORE

  7. 5. Rhodium diesel-reforming catalysts for fuel cell applications

    Author : Xanthias Karatzas; Lars J. Pettersson; James Spivey; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Autothermal reforming; auxiliary power unit; BET; chemisorption; diesel; fuel cell; hydrogen; monolith; reforming catalyst; reformer design; Rh; RhPt alloy; TEM; TPO; TPR; XRD; XPS; zone coating; Chemical engineering; Kemiteknik;

    Abstract : Heavy-duty diesel truck engines are routinely idled at standstill to provide cab heating or air conditioning, and in addition to supply electricity to comfort units such as radio and TV. Idling is an inefficient and unfavorable process resulting in increased fuel consumption, increased emissions, shortened engine life, impaired driver rest and health, and elevated noise. READ MORE