Catalytic cracking reaction pathways for different cycloalkanes and key affecting factors are reviewed.Under deep catalytic cracking(DCC)reaction conditions,the ring-opening reactions for bicyclic and polycyclic hydrocarbons are prone to happen to produce small cracking products including monocyclic cycloalkanes.There is a competitive relationship between cracking reaction and hydrogen transfer in the conversion process of cycloalkanes.The coexisting of cycloalkanes and paraffin can affect the yield and selectivity of light olefins from paraffin.Promoting monocyclic cycloalkanes to open ring while suppressing its hydrogen transfer reaction are crucial for the catalytic cracking of cycloalkanes into light olefins.The catalysts for the deep catalytic cracking of cycloalkane-rich feedstocks should have strong ring opening and cracking abilities,and a low hydrogen transfer ability.
关键词
催化裂解/加氢生成油/环烷烃/低碳烯烃
Key words
deep catalytic cracking/hydrogenated oil/cycloalkanes/light olefins
维普
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