določitev mehanizmov, kinetike in transportnih pojavov
Vid Bačar (Author), Blaž Likozar (Mentor), Marjan Marinšek (Thesis defence commission member), Igor Plazl (Thesis defence commission member)

Abstract

Kinetiko hidrodenitrifikacije palmitamida smo opisali na sulfidiranem katalizatorju NiMo/γ-Al$_2$O$_3$, ki vključuje prenos mase iz plina v tekočino in iz tekočine na površino v šaržnem reaktorju pri različnih temperaturah (250–290 °C), tlaku (30–70 barov) ter atmosferah H$_2$ in N$_2$ s katalizatorjem in brez njega. Razvit je bil reakcijski sistem s 23 različnimi reakcijami s poudarkom na glavnih vmesnih produktih (palmitinska kislina, heksadekan-1-amin), ki so bili preučeni za boljše razumevanje sistema. Model predstavlja prvi tovrstni matematično mehanistični opis procesa, pojasnjuje vlogo vode in amonijaka v sistemu ter mehanizme za nastanek dimerov. Reakcije so močno odvisne od temperature tako v prisotnosti kot odsotnosti vodika. Za potrditev predpostavk in opisa sistema smo uporabili naslednje metode karakterizacije: SEM-EDX, XRD, STEM, TPD-MS, BET, TPR in TPO ter GC-MS.

Keywords

biogoriva;hidrodenitrifikacija;maščobni amidi;NiMoS;kinetični parametri;transportni parametri;reakcijska pot;magistrska dela;

Data

Language: Slovenian
Year of publishing:
Typology: 2.09 - Master's Thesis
Organization: UL FKKT - Faculty of Chemistry and Chemical Technology
Publisher: [V. Bačar]
UDC: 66.091.8(043.2)
COBISS: 201681155 Link will open in a new window
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Downloads: 21
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Other data

Secondary language: English
Secondary title: HYDRODENITRIFICATION, HYDROGENATION, HYDRODEOXYGENATION AND HYDROCRACKING OF FATTY AMIDES: DETERMINATION OF MECHANISMS, KINETICS AND TRANSPORT PHENOMENA
Secondary abstract: The kinetics of palmitamide hydrodenitrification has been described on a sulphidated NiMo/γ-Al$_2$O$_3$ catalyst involving gas-to-liquid and liquid-to-surface mass transfer in a batch reactor at different temperatures (250–290 °C), pressures (30–70 bar) and H$_2$ and N$_2$ atmospheres with and without catalyst. A reaction system with 23 different reactions was developed, focusing on the main intermediates (palmitic acid, hexadecane-1-amine), which were studied to better understand the system. The model represents the first of its kind mathematical mechanistic description of the process, explaining the role of water and ammonia in the system and the mechanisms for the formation of the dimers. The reactions are strongly temperature dependent both in the presence and absence of hydrogen. The following characterisation methods were used to confirm the assumptions and the description of the system: SEM-EDX, XRD, STEM, TPD-MS, BET, TPR and TPO and GC-MS.
Secondary keywords: hydrodenitrification;fatty amides;catalysis;NiMoS;Amidi;Kataliza;Univerzitetna in visokošolska dela;
Type (COBISS): Master's thesis/paper
Study programme: 1000376
Embargo end date (OpenAIRE): 1970-01-01
Thesis comment: Univ. v Ljubljani, Fak. za kemijo in kemijsko tehnologijo, smer Kemijsko inženirstvo
Pages: 1 spletni vir (1 datoteka PDF (68 str.))
ID: 24328568