ector
ategory
ource / Gas
ey Category?
ategory Description/Definition
ountry Detail
quation
Describe variables for method used)
eference
escribe How and Why this Method
las Chosen
sype and source of activity data
Industrial Processes and Product Use
20 Non-Energy Products from Fuels and Solvents Use
204 Other (Use of Urea-Based Catalysts) / CO
No
This category includes CO, emissions from the use of urea-based catalysts.
Over the periods 1990 through 2019, the CO, emissions from the use of urea-based catalysts decreased in the RM by circa 37.4 per cent to the decrease of diesel oil consumption.
The methodology used to estimate CO, emissions from use of urea-based catalysts, available in the 2006 IPCC Guidelines for National Greenhouse Gas Inventaries (Volume 2: Energy, Chapter
3: Mobile Combustion, Chapter 32: Road Transportation, page 3.12), is represented by the following equation:
E-A-12/60-Purity-44/12
Where:
E-CO, emissions from urea-based additive in catalytic converters, kilyr
A-Amount of urea-based additive consumed for use in catalytic converters, ktyr,
12/60-Stoichiometric raso between carbon (C) and urea (CO(NH):
Purity-Mass fraction of urea in the urea-based additive (the default value used represents 32.5 per cent);
44/12-stoichiometric ratio between Carbon (C) and CO
2006 IPCC Guidelines for National Greenhouse Gas Inventories, Volume 2, Chapter 3: Mobile Combustion, Chapter 3.2: Road Transportation.
National Inventory Report: 1990-2019. Greenhouse Gas Sources and Sinks in the Republic of Moldova (2021).
Due to the lower importance of this source and unavailability of all detailed data, the Tier 1 methodology has been used.
AD on the amount of urea-based additive used in catalytic converters are determined indirectly from national diesel oil consumption (on the average, the activity level is 1 to 3 per cent of diesel oil con
sumption by the vehicle). Activity data on diesel oil consumption are available in the E