Razvoj monolitnih katalizatora tehnologijom aditivne proizvodnje

master's thesis

• Title (english): Development of monolithic catalysts by additive manufacturing technology
• Author: Antonella Plavšić
• Mentor: Vesna Tomašić (mentor)
• Committee member: Vesna Tomašić (predsjednik povjerenstva)
• Committee member: Domagoj Vrsaljko (član povjerenstva)
• Committee member: Marina Duplančić (član povjerenstva)
• Granter: University of Zagreb; Faculty of Chemical Engineering and Technology; Zagreb
• Defense date and country: 2020-09-22, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Chemical Engineering

Abstract

Onečišćenje zraka predstavlja problem koji je u centru brojnih istraživanja. Brza industrijalizacija i globalni razvoj rezultiraju porastom onečišćenja, a hlapljivi organski spojevi primjer su velikih onečišćivala te su opasni i za ljudsko zdravlje. Hlapljivi organski spojevi su spojevi koji lako isparavaju pri normalnim uvjetima tlaka i temperature. Postoje razni načini uklanjanja emisija hlapljivih organskih spojeva, a katalitička oksidacija ističe se kao najučinkovitija i ekonomski prihvatljiva metoda. Cilj ovog diplomskog rada bio je izrada monolitnih nosača katalizatora različitih geometrija primjenom napredne tehnologije aditivne proizvodnje (3D-ispis). Na tako pripremljene monolitne nosače nanošene su katalitički aktivne komponente postupkom impregnacije, a kao katalitički aktivne komponente primjenjivani su miješani oksidi mangana i prijelaznih metala (Fe, Cu, Ni). Pripremljeni monolitni katalizatori korišteni su za katalitičku oksidacija plinske smjese benzena, toluena, etilbenzena i o-ksilena (BTEX). Katalitička oksidacija BTEX provedena je pri različitim temperaturama uz konstantan protok reakcijske smjese, a aktivnost pripremljenih monolitnih katalizatora uspoređena je s aktivnošću komercijalnog monolitnog katalizatora koji je u svom sastavu sadržavao plemenite metale (Pt, Pd) kao katalitički aktivne komponente. Na temelju dobivenih rezultata utvrđeno je da se tehnologija aditivne proizvodnje može uspješno primijeniti za izradu monolitnih nosača. Najučinkovitijim monolitnim katalizatorom za katalitičku oksidaciju BTEX smjese pokazao se monolitni katalizator s MnCuOx kao aktivnom komponentom. Usporedbom dvokomponentnog monolitnog katalizatora s MnCuOx kao aktivnom komponentom i komercijalnog monolitnog katalizatora koji u svom sastavu sadrži plemenite metale Pt i Pd, ustanovljeno je da navedeni monolitni katalizator može poslužiti kao zamjena za skupe komercijalne katalizatore tijekom katalitičke oksidacije hlapljivih aromatskih spojeva.

Abstract (english)

Air pollution is a central problem in many different studies. Rapid industrialization and global development lead to the increase of pollution, and volatile organic compounds are the examples of the polluters which are dangerous for human health. Volatile organic compounds evaporate easily during the normal pressure and temperature conditions. There are different methods of removing the emissions of the volatile organic compounds, with the catalytic oxidation being the most efficient and economically acceptable one. The master thesis was aimed at creating monolithic catalyst supports with unique geometries by using the advanced technology of additive manufacturing (3D-printing). Using the impregnation process, catalytically active components, i.e. mixed oxides of manganese and transition metals (Fe, Cu, Ni), were applied to the mentioned monolithic supports. The prepared monolithic catalysts were used for catalytic oxidation of the gaseous mixture of benzene, toluene, ethylbenzene, and o-xylene (BTEX). The BTEX catalytic oxidation was conducted at different temperatures and with a constant flow of the reaction mixture. Also, the activity of the prepared monolithic catalysts was compared to the activity of the commercial monolithic catalyst which contained noble metals (Pt, Pd) that acted as the catalytically active components. The results obtained show that additive manufacturing technology can be successfully used for producing monolithic supports. The monolithic catalyst with MnCuOx as the active component was proven to be the most efficient monolithic catalyst for catalytic oxidation of the BTEX mixture. By comparing the two-component monolithic catalyst with MnCuOx as the active component and the commercial monolithic catalyst which contains the Pt and Pd noble metals, it was established that the mentioned monolithic catalyst can be used instead of the expensive commercial catalysts during the catalytic oxidation of volatile aroma compounds.

• Keywords: hlapljivi organski spojevi; BTEX; katalitička oksidacija; monolitni katalizator; tehnologija aditivne proizvodnje
• Keywords (english): volatile organic compounds; BTEX; catalytic oxidation; monolithic catalyst; additive manufacturing technology
• Language: croatian
• URN:NBN: urn:nbn:hr:149:309433
• Project: Number: IP-2018-01-8669; Title: Intenzifikacija fotokatalitičkih i katalitičkih procesa za obradu otpadnih voda i otpadnih plinova; Acronym: IN-PhotoCat; Leader: Vesna Tomašić; Jurisdiction: Croatia; Funder: HRZZ; Funding stream: IP
• Study programme: Title: Chemical Engineering - Graduate study; Study programme type: university; Study level: graduate; Academic / professional title: magistar/magistra inženjer/inženjerka kemijskog inženjerstva (magistar/magistra inženjer/inženjerka kemijskog inženjerstva)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Access restricted to students and staff of home institution
• Created on: 2022-03-06 18:20:15