Group 1 metal ion content of microporous molecular sieve catalysts

A catalyst comprising a microporous crystalline aluminosilicate having a Constraint Index less than or equal to 12, a Group 1 alkali metal or a compound thereof and/or a Group 2 alkaline earth metal or a compound thereof, a Group 10 metal or a compound thereof, and optionally a Group 11 metal or a compound thereof; wherein the total amount of Group 1 and/or Group 2 metal is present at a ratio that is optimized for the desirable chemical conversion process. 催化剂，其包含约束指数小于或者等于12的微孔结晶铝硅酸盐，第1族碱金属或者其化合物和/或第2族碱土金属或者其化合物，第10族金属或者其化合物，和非必要的第11族金属或者其化合物；其中所述第1族和/或第2族金属的总量是以这样的比率存在的，其对于所期望的化学转化方法来说是最佳的。