Sökning: "aluminum-silicate"

Hittade 2 avhandlingar innehållade ordet aluminum-silicate.

  1. 1. Catalysis for Lean NOx Reduction - Aspects of Catalyst Synthesis and Surface Acidity

    Författare :Hanna Härelind Ingelsten; Chalmers University of Technology; []
    Nyckelord :lean NOx reduction; silica; alumina; FTIR; surface acidity; model catalysts; platinum; HZSM-5; w o microemulsion; aluminum-silicate; hydrocarbon;

    Sammanfattning : From both economic and environmental perspectives it is desirable to reduce the consumption of fossil fuels. One route to increase the fuel efficiency for vehicles is operation in oxygen excess. However, a major problem with this technique is the lean environment, which obstructs catalytic reduction of nitrogen oxides (NOx) to harmless nitrogen. LÄS MER

  2. 2. Packed-Fluidized Bed Reactors – Batch Experiments and Fundamental Modeling with Random Metal Packings

    Författare :Nasrin Nemati; Chalmers University of Technology; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Bubbling fluidized bed; Heat transfer; Confined fluidization; Chemical-looping combustion; Mass transfer; Random packing; Packed-fluidized bed;

    Sammanfattning : The aim of this work is to investigate the effect of random packings on heat and mass transfer phenomena, when applied in bubbling fluidized beds. For this purpose, first, the heat transfer coefficient to a horizontal tube submerged in a fluidized bed containing various types of random packings was investigated. LÄS MER