Sökning: "monolith reactor"

Visar resultat 1 - 5 av 11 avhandlingar innehållade orden monolith reactor.

  1. 1. Monolith Reactors in Three-Phase Processes

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

    Sammanfattning : 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). LÄS MER

  3. 2. Mathematical Modelling of Structured Reactors with Emphasis on Catalytic Combustion Reactions

    Författare :Dennis Papadias; KTH; []
    Nyckelord :Mathematical modelling; Structured reactors; Catalytic combustion; Monolith; Annular reactor; Washcoat; Mass-transfer; Kinetics;

    Sammanfattning : .... LÄS MER

  4. 3. Mathematical Modelling in Catalytic Automotive Pollution Control

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

    Sammanfattning : 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. LÄS MER

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

    Författare :Xanthias Karatzas; Lars J. Pettersson; James Spivey; KTH; []
    Nyckelord :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;

    Sammanfattning : 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. LÄS MER

  7. 5. Modelling of Catalytic Monolith Reactors for Exhaust Aftertreatment

    Författare :Magnus Walander; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; diesel oxidation catalyst; effective diffusivity; washcoat; EATS; gravimetric analysis; parameter estimation; synthetic catalyst activity test; Exhaust aftertreatment modelling; scanning electron microscope;

    Sammanfattning : The incomplete combustion of liquid or gaseous fuels in the internal combustion engine inherently produces several toxic emissions that need to be  removed. This is done through a series of catalytic converters, referred to as the exhaust aftertreatment system (EATS), each catalyst with its own purpose. LÄS MER