What gases can be in coke?

* Carbon dioxide (CO2) is the most abundant gas in coke, making up around 50-70% of its volume. CO2 is produced when carbon atoms in the coal react with oxygen atoms during the coking process.

* Hydrogen (H2) is the second most abundant gas in coke, making up around 15-25% of its volume. H2 is produced when water molecules in the coal react with carbon atoms during the coking process.

* Methane (CH4) is the third most abundant gas in coke, making up around 5-10% of its volume. CH4 is produced when hydrogen atoms react with carbon atoms during the coking process.

* Other gases that may be present in coke include carbon monoxide (CO), ethane (C2H6), propane (C3H8), and butane (C4H10). These gases are typically present in small amounts, less than 1% of the total volume.