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Title:Deaktivacija katalizatorjev pri postopku proizvodnje metanola iz ogljikovega dioksida in vodika
Authors:Plajnšek, Alen (Author)
Likozar, Blaž (Mentor) More about this mentor... New window
Čuček, Lidija (Co-mentor)
Files:.pdf UN_Plajnsek_Alen_2018.pdf (3,60 MB)
MD5: 21162F2320E2E61758D1C05F78925315
 
Language:Slovenian
Work type:Bachelor thesis/paper (mb11)
Typology:2.11 - Undergraduate Thesis
Organization:FKKT - Faculty of Chemistry and Chemical Engineering
Abstract:Naraščanje koncentracije CO2 v ozračju predstavlja veliko grožnjo človeštvu, zato se intenzivno iščejo postopki, s katerimi bi zmanjšali količino škodljivih emisij na minimalno raven. Predmet raziskav je tudi posopek hidrogenacije CO2 z vodikom do metanola ob uporabi učinkovitega katalizatorja. Kot surovini bi se uporabljala bogat vir izpustov CO2 in vodik pridobljen z elektriko iz obnovljivih virov. V veliki meri je izvedljivost tega procesa odvisna od katalizatorja, ki mora biti dovolj aktiven in stabilen, da je primeren za industrijsko rabo. Namen diplomske naloge je bil ugotoviti, kako stabilni so različni sintetizirani katalizatorji in kot primerjavo za lažjo ponazoritev testirati tudi komercialno dostopen katalizator HiFuel W230. Uporabili smo kombinacijo daljšega testa pri zmerni reakcijski temperaturi, ki je značilna za izvajanje reakcije in testa pospešenega staranja pri višjih temperaturah. Eksperimente smo izvedli na sistemu petih vzporednih reaktorjev s strnjenim slojem katalizatorja. Rezultati kažejo, da je hitrost deaktivacije hitrejša pri višjih tlakih in pričakovano tudi višjih temperaturah, ki pospešuje sintranje delcev v večje aglomerate. Kot primernejši nosilec aktivnih komponent se izkaže Al2O3, manj pa TiO2.
Keywords:katalizatorji, metanol, ogljikov dioksid, deaktivacija, stabilnost
Year of publishing:2018
Publisher:[A. Plajnšek]
Source:Maribor
UDC:661.721(043.2)
COBISS_ID:21977366 New window
NUK URN:URN:SI:UM:DK:8IV6IXJQ
Views:491
Downloads:83
Metadata:XML RDF-CHPDL DC-XML DC-RDF
Categories:KTFMB - FKKT
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Licences

License:CC BY-NC-ND 4.0, Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International
Link:http://creativecommons.org/licenses/by-nc-nd/4.0/
Description:The most restrictive Creative Commons license. This only allows people to download and share the work for no commercial gain and for no other purposes.
Licensing start date:23.08.2018

Secondary language

Language:English
Title:Deactivation of catalysts in the process of methanol production from carbon dioxide and hydrogen
Abstract:Increasing of CO2 concentration in atmosphere is big threat for humanity, therefore we look for ways to reduce emmsions to minimal level. Subject of research is also the hydrogenation process of CO2 with hydrogen to form methanol. As raw material should be used a rich source of CO2 emissions and hydrogen from renewable electricity. The feasibility depends largely on catalysts, which must be active and stable. Purpose of this thesis is to find out how stable are different catalysts and for comparison test commercially available catalysts HiFuel W230. We use a combination of long term test at moderate reaction temperatures and a rapid aging test at high temperatures. Experiments were held on system of 5 fixed bed reactors. Results show, that the deactivation is faster at higher pressures and as expected temperatures too. The effect of higher temperatures is well described in litarature. As more appropriate carrier of active components is found Al2O3, which seems to be more stable as TiO2.
Keywords:catalysts, methanol, carbon dioxide, deactivation, stability


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