| 摘要 |
Disclosed is a method of maintaining acid catalyst sites of a catalyst for a production of olefins, said method comprising providing a catalyst environment at about 350 degrees C to about 650 degrees C in a reaction zone, which zone is contained within a plurality of reactor surfaces, wherein said reactor surfaces comprise materials resistant to loss of catalyst contaminants selected from the group consisting of phosphorus, silicon, alkaline metals and alkaline earth metals whereby deposition of catalyst contaminant is reduced to a level that does not impair activity of said catalyst. |
