临氧条件下的轻烃催化裂化反应研究

Study on Catalytic Cracking Reaction of Light Hydrocarbons under Oxidative Conditions.

关键词:  轻烃 临氧裂化 乙烯 丙烯 催化裂化

Key words:  light hydrocarbon,cracking with oxygen, ethylene,propene,

摘要:

本文报道下轻烃临氧条件下的催化裂化转化成乙烯和丙烯的反应途径，并探讨了气相氧在聚化反应的作用，在临氧条件下，丙烷可通过脱氢二聚丙裂化生成乙烯，乙烯选择性可达到４５％，氧的存在使该反应由热力上不利变为有利，此外气相氧可提高正己烷转化率，乙烯和丙烯产物选择性，氧的作用在于促进烷烃脱氧并引起碳－碳键断裂反应。

Abstract:

The reaction processes for propane, i-butene, and hexane cracking under oxidative conditions are Studied, together with the function of gaseous oxygen on cracking reaction. In the presence of oxygen, Profane cracking toethylene may proceed through firstly