id	keyword
cet-14811	pyrolysis
cet-14811	plastic
cet-14811	waste
cet-14811	products
cet-14811	chemical
cet-14811	yields
cet-14811	liquid
cet-14811	hydrocarbons
cet-14811	wong
cet-14811	catalyst
cet-14811	cracking
cet-14811	et al