what substance is converted to propene by cracking?

Question

what substance is converted to propene by cracking?

is it ethene, propene, benzene, toluene, xylene, ethane, propane, naptha or natural gas?

Answer 1

The chemistry prof wants you to say, "Propane." In actual steam crackers on the gulf coast, they use a mix of ethane and propane. This was the feedstock of Phillips Petroleum in Bartlesville, OK. The product is a stream of H2, CH4, propylene (what some call propene), ethylene. acetylene, and methylacetylene. The companies use the H2 to reduce acetylene and methylacetylene to ethylene and propylene. The reason they're called steam crackers is that they inject a lot of superheated steam with the ethane and propane into the furnace in order to make the reaction conditions more "gentle."

You asked about naphtha. This is a hydrocarbon liquid about the consistency of lighter fluid. Many companies on the gulf coast crack naphtha also. They get a lot more heavy products like benzene, toluene, the three xylenes, isoprene, butylene isobutylene.

Indeed, you may ask about atmospheric gas oil, vacuum gas ouil. Eaxch of these is cracked on the gulf coast, and they each of them yield a slate of products.

Answer 2

Cracking means breaking down larger molecules to make smaller ones. Specifically, it is used on crude oil to make more octane r gasoline. Todays cars like branched chains better so petroleum is cracked into molecules of 8 carbons, but many are pentanes that are branched to make 8 carbons. Propene being a compound with a double bond would not necessarily be formed. Frm the ones you mentioned the one it could be made from is propane, but not by cracking.

Answer 3

petroleum!

The processing of natural gas involves removal of butane, propane, and large amounts of ethane from the raw gas, to prevent condensation of these volatiles in natural gas pipelines. Additionally, oil refineries produce some propane as a by-product of production of cracking petroleum into gasoline or heating oil.

Answer 4

Benzene

Answer 5

Naphta, which is actually a blend of saturated hydrocarbons that are liquid at ambient temperature.

In the process of cracking this saturated chains break and form double bonds, producing olefins, one of which is propene.