基本信息:
- 专利标题： METHOD FOR PREPARING P-XYLENE
- 申请号：EP21958216.0 申请日：2021-12-10
- 公开(公告)号：EP4393902A1 公开(公告)日：2024-07-03
- 发明人： LIU, Zhongmin , YU, Zhengxi , YANG, Yue
- 申请人： Dalian Institute Of Chemical Physics, Chinese Academy Of Sciences
- 申请人地址： CN Liaoning 116023 457 Zhongshan Road Dalian
- 专利权人： Dalian Institute Of Chemical Physics, Chinese Academy Of Sciences
- 当前专利权人： Dalian Institute Of Chemical Physics, Chinese Academy Of Sciences
- 当前专利权人地址： CN Liaoning 116023 457 Zhongshan Road Dalian
- 代理机构： Bayramoglu et al.
- 优先权： CN 2111122218 2021.09.24
- 国际申请： CN2021137211 2021.12.10
- 国际公布： WO2023045105 2023.03.30
- 主分类号： C07C2/86
- IPC分类号： C07C2/86 ; C10G3/00 ; C10G35/095 ; C07C15/08
摘要：
A method for preparing p-xylene is provided. Raw materials containing methanol, naphtha and CO2 are introduced into a reactor filled with a catalyst for a reaction to produce p-xylene. By adding the methanol, the product distribution is adjusted, and the selectivity of p-xylene is obviously improved. In addition, components containing benzene and toluene in aromatic hydrocarbon products are returned to a reaction system and co-fed with the raw materials for a reaction to produce p-xylene, so that cyclic utilization of the raw materials is achieved, and the method has extremely high economic benefits. The method has a simple process and high feasibility, can greatly improve the selectivity and yield of p-xylene, has an important application value, and provides a new way for large-scale utilization of CO2.