催化学报

催化学报 ›› 2009, Vol. 30 ›› Issue (6): 509-513.

• 研究论文 • 上一篇    下一篇

碱土金属改性SAPO-34催化甲醇制烯烃

李红彬,吕金钊,王一婧,王新平   

  1. 大连理工大学精细化工国家重点实验室, 辽宁大连 116024
  • 收稿日期:2009-06-25 出版日期:2009-06-25 发布日期:2013-03-22

Alkaline Earth Metals-Modified SAPO-34 for Methanol Conversion to Light Olefins

LI Hongbin, LÜ Jinzhao, WANG Yijing, WANG Xinping*   

  1. State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116024, Liaoning, China
  • Received:2009-06-25 Online:2009-06-25 Published:2013-03-22

PDF

1236

被引次数

46

摘要： 用碱土金属 (Mg, Ca, Sr 和 Ba) 通过浸渍法对 SAPO-34 分子筛进行了改性, 在常压连续流动固定床反应器上研究了其对甲醇制烯烃 (MTO) 反应的催化性能. 结果表明, 0.5%~1% Ba 的添加明显提高了 SAPO-34 的抗积炭失活能力, 使催化剂在 WHSV = 2 h?1 和 450 oC 条件下的催化寿命相对延长了 27%.

关键词: 碱土金属, 改性, SAPO-34, 甲醇制烯烃, 积炭, 寿命

Abstract: The investigation focused on modifying SAPO-34 zeolite with alkaline earth metals to increase the anti-coking ability of the catalyst in methanol conversion to light olefins (MTO). 1%Ba/SAPO-34 gave a prolonged lifetime by 27% compared with SAPO-34 under the reaction conditions of WHSV = 2 h?1, 450 oC, and atmospheric pressure.

Key words: alkaline earth metal, modification, SAPO 34, methanol-to-olefin, coke deposition, lifetime