Priprema, karakterizacija i stabilnost katalizatora za pročišćavanje otpadnih plinova

undergraduate thesis

• Title (english): Preparation, characterization and stability of catalysts for the purification of waste gases
• Author: Ana Gudelj
• Mentor: Vesna Tomašić (mentor)
• Committee member: Vesna Tomašić (predsjednik povjerenstva)
• Committee member: Igor Dejanović (član povjerenstva)
• Committee member: Domagoj Vrsaljko (član povjerenstva)
• Granter: University of Zagreb; Faculty of Chemical Engineering and Technology; Zagreb
• Defense date and country: 2018-09-13, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Chemical Engineering; Reaction Engineering

Abstract

Katalitički procesi imaju veliku ulogu u zaštiti okoliša, osobito heterogeno-katalitički procesi oksidacije i redukcije kojima se smanjuju emisije neželjenih onečišćujućih tvari prisutnih u otpadnim plinovitim i vodenim tokovima. Cilj ovog rada bio je pregled katalitičkih postupaka i katalizatora koji se primjenjuju u zaštiti zraka, odnosno za smanjenje emisija u atmosferu. U uvodnom dijelu ovog preglednog rada dan je pregled uobičajenih onečišćivala atmosfere, njihovih izvora te je dan prikaz stanja atmosfere, pri čemu su posebno analizirani dušikovi oksidi i hlapljivi organski spojevi. Za svaku od navedenih skupina spojeva navedeni su uobičajeni predstavnici i dan je pregled postupaka koji se koriste za smanjenje njihovih emisija u atmosferu. U nastavku su detaljnije opisani katalitički postupci koji se primjenjuju u zaštiti okoliša. Posebna pozornost posvećena je procesima katalitičke oksidacije i značajkama katalizatora koji se primjenjuju za tu svrhu. Također je dan detaljan pregled katalizatora za oksidaciju hlapljivih organskih spojeva. U raspravi i perspektivnom dijelu rada detaljno su opisane napredne izvedbe monolitnih katalizatora/reaktora koji su danas sastavni dio tehnologija koje se primjenjuju u cilju zaštite zraka, kako za obradu otpadnih i ispušnih plinova iz pokretnih i nepokretnih izvora, tako i za ekološki prihvatljivu proizvodnju energije. S obzirom na veliki potencijal monolitnih izvedbi katalizatora/reaktora očekuje se da će razvoj novih tehnologija za njihovu proizvodnju, poboljšanje značajki postojećih i razvoj novih monolitnih struktura značajno utjecati na stanje okoliša, a time i na kvalitetu ljudskog života.

Abstract (english)

Catalytic processes play a big role in environment protection, especially processes of heterogeneous catalytic oxidation and reduction, which can reduce unwanted emissions of pollutants found in waste gases and waste water. Aim of this work was a review of catalytic procedures and catalysts that are applied in environment protection in order to reduce emissions in atmosphere. In introduction part of the work, a review of usual atmosphere pollutants is given, as well as their sources. State of atmosphere is also shown, with special accent being on nitrogen oxides and volatile organic compounds. For each group mentioned, there are their usual representatives and processes for reduction of emissions in atmosphere named. Moreover, catalytic processes applied in environment protection are described in detail. Special accent is given on processes of catalytic oxidation and features of catalysts used for that process. Detailed review of catalysts used for oxidation of volatile organic compounds is also shown. Advanced designs of monolithic catalysts and reactors are discussed in the continuation of the work. Today are monolithic catalysts accustomed part of technologies applied for environment protection, precisely for treatment of waste gases and exhaust gases, coming from mobile or stationary sources. Monolithic catalysts are also used for more environmentally acceptable energy production. Because of great potential of monolithic designs of catalysts and reactors, it is expected that development of new technologies for their production, improvement of features of existing structures and development of new ones, will have a signific impact on environment condition, and consequently also on life quality.

• Keywords: dušikovi oksidi; hlapljivi organski spojevi; katalitička oksidacija/redukcija; monolitni katalizatori/reaktori
• Keywords (english): nitrogen oxides; volatile organic compounds; catalytic oxidation/reduction; monolithic catalysts/reactors
• Language: croatian
• URN:NBN: urn:nbn:hr:149:993334
• Study programme: Title: Materials Science and Engineering - Undergraduate study; Study programme type: university; Study level: undergraduate; Academic / professional title: sveučilišni/a prvostupnik/ prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka kemijskog inženjerstva (sveučilišni/a prvostupnik/ prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka kemijskog inženjerstva)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Open access
• Created on: 2022-05-09 11:44:38