Pretvorba CO [spodaj] 2 v metanojsko kislino s posrednim virom vodika in ZrO [spodaj] 2 katalizatorjem

diplomsko delo

Metka Založnik (Author), Urška Lavrenčič Štangar (Mentor)

Abstract

Industrializacija, prekomerna uporaba fosilnih goriv in naraščanje prebivalstva so le eni izmed mnogih krivcev, da se je v zadnjih desetletjih koncentracija CO2 v ozračju povečala do te mere, da se človeštvo že sooča z resnimi okoljskimi težavami. Z zajemanjem in uporabo ter pretvorbo CO2 ne bi le zmanjšali količino toplogrednega plina, temveč bi tudi pridobili dragocene kemikalije. Eden izmed načinov k zmanjševanju koncentracije CO2 v ozračju je njegova pretvorba v HCOOH, ki je ne le uporaben tekoči material za shranjevanje vodika, temveč tudi C1 gradnik za kemično industrijo. Cilj diplomske naloge je bil predlagati trajnostno pot hidrogenacije CO2 v metanojsko kislino s hidrazinom kot posrednim virom vodika ter sintetizirati in izbrati katalizator, ki bo visoko aktiven in selektiven pri tem. Kot najbolj aktiven se je izkazal z manganom oplaščen ZrO2, kalciniran pri 900 °C (Mn+ZrO2-m), s katerim so bile izvedene nadaljnje reakcije za optimizacijo pogojev.

Keywords

metanojska kislina;hidrogenacija;katalizatorji;cirkonijev dioksid;diplomska dela;

Data

Language:	Slovenian
Year of publishing:	2022
Typology:	2.11 - Undergraduate Thesis
Organization:	UL FKKT - Faculty of Chemistry and Chemical Technology
Publisher:	[M. Založnik]
UDC:	546.264-31:66.094.25(043.2)
COBISS:	122309635
Views:	25
Downloads:	9
Average score:	0 (0 votes)
Metadata:

Other data

Secondary language:	English
Secondary title:	CO2 conversion to formic acid with indirect hydrogen source over ZrO2 catalyst
Secondary abstract:	Industrialization, overuse of fossil fuels, and population growth are among the many culprits that have increased atmospheric CO2 concentrations so much in recent decades that humanity is already facing serious environmental problems. By capturing, using and converting CO2, we would not only reduce the amount of this greenhouse gas, but also gain valuable chemicals. One of the ways to reduce the concentration of CO2 in the atmosphere is to convert CO2 into HCOOH, which is not only an important liquid material for hydrogen storage but also a C1 building block for the chemical industry. The aim of this work was to propose a sustainable method for hydrogenation of CO2 to formic acid using hydrazine hydrate as an indirect hydrogen source, and to synthesize and select a catalyst that is highly active and selective in this process. Manganese modified ZrO2 calcined at 900 °C (Mn+ZrO2-m) proved to be the most active catalyst, with which further reactions were carried out to optimize the conditions.
Secondary keywords:	heterogeneous catalysis;carbon dioxide hydrogenation;formic acid;zirconia;Ogljikov dioksid;Hidrogeniranje;Heterogena kataliza;Univerzitetna in visokošolska dela;
Type (COBISS):	Bachelor thesis/paper
Study programme:	1000373
Embargo end date (OpenAIRE):	1970-01-01
Thesis comment:	Univ. v Ljubljani, Fak. za kemijo in kemijsko tehnologijo, UNI Kemija
Pages:	35 str.
ID:	16327069