Present Situation and Future Prospect of Selective Methylation of Toluene to P-xylene
From the perspective of the integration of refining and petrochemical development,the appropriate"oil reduction and chemistry increase"is one of the important ways to promote the high-quality development of China's petrochemical industry.In view of this,it is of great significance for refining enterprises to develop selective low energy consumption process for xylene.In this regard,the toluene selective methylation process is to produce high-value PX from low-cost raw materials such as toluene(Toluene)and methanol(CH3OH).This process can theoretically produce twice the PX with high selectivity.The toluene selective methylation process provides a potential way for the production of PX.This paper briefly introduces the process and its limitations,the research status of toluene selective methylation process and the development direction of the process catalyst.
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