Kemijska kinetika nekaterih dušikovih oksidov v atmosferi

diplomsko delo

Manca Turk (Author), Andrej Godec (Mentor)

Abstract

Dušikovi oksidi so pomembni onesnaževalci predvsem zaradi vpliva na nastanek škodljivega troposferskega ozona, razpad ugodnega stratosferskega ozona ter nastanek kislega dežja. Nastanejo iz antropoloških in naravnih virov ter se nato v atmosferi pretvorijo s kemijskimi reakcijami. Najpomembnejša dušikova oksida sta dušikov oksid (NO) in dušikov dioksid (NO2), ki se pretvarjata eden v drugega in ju s skupno enačbo označimo kot NOx. V troposferi največ dušikovih oksidov nastane pri procesu zgorevanja, v stratosferi pa je glavni vir didušikov oksid (N2O). V diplomskem delu sem proučevala reakcijo dušikovih oksidov z ozonom in hitrosti te reakcije na različnih višinah, pri tem pa sem uporabljala enačbe za kemijsko kinetiko. Na podlagi računov kemijske kinetike sem ugotavljala, kako se z višino hitrost razpada ozona spreminja.

Keywords

dušikovi oksidi;atmosfera;kemijska kinetika;hitrost kemijske reakcije;hitrostni zakon;red kemijske reakcije;vpliv temperature;vpliv katalizatorja;diplomske naloge;

Data

Language:	Slovenian
Year of publishing:	2021
Typology:	2.11 - Undergraduate Thesis
Organization:	UL FKKT - Faculty of Chemistry and Chemical Technology
Publisher:	[M. Turk]
UDC:	544.4(043.2)
COBISS:	85688835
Views:	257
Downloads:	28
Average score:	0 (0 votes)
Metadata:

Other data

Secondary language:	English
Secondary title:	Chemical kinetics of some nitrogen oxides in the atmosphere
Secondary abstract:	Nitrogen oxides are important pollutants mainly due to their influence on the formation of harmful tropospheric ozone, the decomposition of beneficial stratospheric ozone and the formation of acid rain. They are formed from anthropological and natural sources and are then converted in the atmosphere by chemical reactions. The most important nitrogen oxides are nitric oxide (NO) and nitrogen dioxide (NO2), which are converted into each other and are denoted by the common equation as NOx. In the troposphere, most nitrogen oxides are formed during the combustion process, while in the stratosphere, the main source is nitrous oxide (N2O). In this work, I studied the reaction of nitrogen oxides with ozone and the rate of this reaction at different altitudes, using the equations for chemical kinetics. Then, based on calculations, I determined how the rate of ozone depletion changes with altitude.
Secondary keywords:	nitrogen oxides;atmosphere;chemical kinetics;
Type (COBISS):	Bachelor thesis/paper
Study programme:	1000374
Embargo end date (OpenAIRE):	1970-01-01
Thesis comment:	Univ. v Ljubljani, Fak. za kemijo in kemijsko tehnologijo, VSŠ Kemijska tehnologija
Pages:	24 str.
ID:	13571108