Sökning: "Phenanthrene"

Visar resultat 1 - 5 av 12 uppsatser innehållade ordet Phenanthrene.

  1. 1. Chemical analysis of polycyclic aromatic compounds in plastic materials used in indoor environments

    Uppsats för yrkesexamina på grundnivå, Örebro universitet/Institutionen för naturvetenskap och teknik

    Författare :Lania Yara; [2023]
    Nyckelord :polycyclic aromatic hydrocarbons; additives; plastics; artificial leather;

    Sammanfattning : Human bodies are in constant interaction with materials containing known and unknown chemicals of hazardous behavior. One group of chemicals are polycyclic aromatic compounds (PACs) which can be present in both indoor and outdoor materials, commonly in plastics. LÄS MER

  3. 2. Chelating agents in NiMo sulfided catalysts and the effect of nitrogen compounds on hydrodearomatization and hydrodenitrogenation reactions

    Master-uppsats, KTH/Kemiteknik

    Författare :Lilla Lukovicsová; [2022]
    Nyckelord :hydrotreating; NiMo Al2O3; HDN; HDA; trickle-bed microreactor; Type I and II hydrotreating catalysts; Hydrering; NiMo Al2O3; HDN; HDA; porlbädd reaktor; Typ I och II hydrering katalysatorer;

    Sammanfattning : Hydrering är en viktig process för att producera produkter med önskade egenskaper samt att uppfylla de lagliga krav som existerar med avseende på miljö och hälsa. Reaktionerna som sker vid hydreringen är katalytiska vilket innebär att förstå sam utnyttja de mest lämpliga katalysatorerna är av yttersta vikt. LÄS MER

  4. 3. Inhibition Kinetics of Hydrogenation of Phenanthrene

    Master-uppsats, KTH/Skolan för kemi, bioteknologi och hälsa (CBH)

    Författare :Johannes Johansson; [2019]
    Nyckelord :Catalytic hydrotreating; Phenanthrene; Inhibition kinetics; Model development; Nonlinear regression;

    Sammanfattning : In this thesis work the hydrogenation kinetics of phenanthrene inhibited by the basic nitrogen compound acridine and the non-basic carbazole was investigated. Based on a transient reactor model a steady state plug flow model was developed and kinetic parameters were estimated through nonlinear regression to experimental data. LÄS MER

  5. 4. Development of a Liquid Chromatography Method to Separate and Fractionate EPA’s 16 Priority Polycyclic Aromatic Hydrocarbons (PAHs)

    Kandidat-uppsats, Örebro universitet/Institutionen för naturvetenskap och teknik

    Författare :Tim Sinioja; [2016]
    Nyckelord :;

    Sammanfattning : Polycyclic Aromatic Hydrocarbons (PAHs) are persistent, toxic and carcinogenic environmental pollutants consisting of two or more aromatic rings. The estimation of the toxicity of PAHs can be challenging and time-consuming due to the complexity of PAH-mixtures found in the environment, for example at contaminated sites. LÄS MER

  7. 5. Multi-energy well kinetic modeling of novel PAH formation pathways in flames

    Master-uppsats, KTH/Kraft- och värmeteknologi

    Författare :Nicola Giramondi; [2016]
    Nyckelord :Polycyclic Aromatic Hydrocarbons; soot; laminar flame; flame calculation; quantum chemical calculation; non-equilibrium kinetic modeling.;

    Sammanfattning : Polycyclic Aromatic Hydrocarbons (PAHs) are harmful by-products formed during combustion of hydrocarbons under locally fuel-rich conditions followed by incomplete combustion. PAHs act as precursors during the formation of soot. PAHs and soot are harmful for human health and legislation limits the emission of unburned hydrocarbons and soot. LÄS MER