alkanes and environments Flashcards
are alkanes saturated
yes
what is petroleum made up from, and how can it be separated
-made from a mixture of different length hydrocarbons, and can be separated using fractional distillation
what does cracking do to the hydrocarbon
breaks the single c-c bonds
what is thermal cracking and what are the conditions
cracking alkanes at high temps and high pressure
what is the intermediate for thermal cracking and the products made
-free radicals
-main product is alkenes
what is catalytic cracking and the conditions required
-cracking done at slight pressure and high temp with a catalyst
what catalyst is used for catalytic cracking and what are the main products and their uses
-zeolite catalyst
-produces mostly aromatic and branched alkanes
-used for motor fuels
what is the economic reasons for cracking
-certain alkenes or compounds are in high demand and low supply such as fuels
what pollutants are produced by internal combustion engines
-nitrous oxides
-carbon monoxide
environmental impacts of nitrogen oxide
forms nitric acid in acid rains
what are catalytic converters made up of and their shape
-ceramic honeycomb structure
-coated with either platinum, palladium or rhodium
give the equation for conversion of pollutants by a catalytic converter
carbon monoxide + nitrogen monoxide (nitrous oxides) –> nitrogen and carbon dioxide
