Sinteza mezoporoznog CeO2 dopiranog sa Zr metodom tvrdog predloška

master's thesis

• Title (english): Synthesis of mesoporous Zr-doped CeO2 via hard template method
• Author: Jakov-Stjepan Pavelić
• Mentor: Stanislav Kurajica (mentor)
• Committee member: Stanislav Kurajica (predsjednik povjerenstva)
• Committee member: Gordana Matijašić (član povjerenstva)
• Committee member: Anamarija Rogina (član povjerenstva)
• Granter: University of Zagreb; Faculty of Chemical Engineering and Technology; Zagreb
• Defense date and country: 2022-09-16, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Chemical Engineering

Abstract

S porastom potrebe za djelotvornim i oporabljivim rješenjima za uspješno vođenje različitih kemijskih reakcija znanstveno-istraživački radovi usmjereni su ka pronalasku djelotvornih i ekološki prihvatljivih katalizatora, nosača djelatnih tvari, adsorbensa za vlagu i stakleničke plinove. U ovome je radu opisana sinteza i karakterizacija jednog takvog potencijalnog katalizatora: cerijeva(IV) oksida dopiranog cirkonijem. Uzorci su pripremljeni metodom nanolijevanja pomoću krutog predloška na mezoporoznoj siliki, čija je sinteza također sastavni dio ovoga rada. Nanostrukturirani materijali, naročito porozni keramički materijali, pokazuju se kao izvrsni adsorbensi, katalizatori te nosači djelatnih tvari u farmaceuticima zbog svoje iznimno velike specifične površine, što utječe na visok broj aktivnih mjesta na površini tih materijala. Pripravljeni su uzorci okarakterizirani raznim karakterizacijskim tehnikama te su u ovome radu izneseni rezultati ispitivanja i prokomentirana svojstva mezoporoznih nanostrukturiranih keramičkih materijala.

Abstract (english)

Following the rising need for efficient and recyclable solutions for the successful management of a variety of chemical reactions scientific efforts are directed towards finding efficient and ecologically acceptable catalysts, carriers of active substances, humidity and greenhouse gas adsorbents. The synthesis and characterization of one such potential catalyst is described in this paper: zirconium doped cerium(IV) oxide. The samples have been prepared using the method of nanocasting with formerly synthesised mesoporous silica serving as a hard template. Nanostructured materials, especially porous ceramics, have shown themselves to be excellent adsorbents, catalysts and active substance carriers in pharmaceutics because of their significantly large specific surface area, which results in a vast number of active points on the surface of these materials. Synthesised samples have been characterized by various characterization techniques and the results of them, as well as the properties of mesoporous nanostructured ceramics are described in this paper.

• Keywords: katalizatori; nanostrukturirani materijali; keramika
• Keywords (english): catalysts; nanostructured materials; ceramics
• Language: croatian
• URN:NBN: urn:nbn:hr:149:347226
• Project: Number: IP-2018-01-2963; Title: Hidrotermalna sinteza dopiranog cerij oksidnog nanokatalizatora; Acronym: HOuDiNI; Leader: Stanislav Kurajica; Jurisdiction: Croatia; Funder: HRZZ; Funding stream: IP
• Study programme: Title: Materials Science and 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: Closed access
• Created on: 2023-03-19 21:13:56