Patent ID: 7439381

Claim:
A process for preparing 3-pentenenitrile by hydrocyanating 1,3-butadiene with hydrogen cyanide over at least one catalyst, the process comprising contacting 1,3-butadiene, hydrogen cyanide, or both the 1,3-butadiene and the hydrogen cyanide, with at least one microporous solid, and releasing the 1,3-butadiene, hydrogen cyanide, or both the 1,3-butadiene and the hydrogen cyanide, from the at least one microporous solid, hydrocyanating the 1-3-butadiene with hydrogen cyanide over at least one catalyst and regenerating the at least one microporous solid which had been contacted with 1,3-butadiene, hydrogen cyanide, or both the 1,3-butadiene and the hydrogen cyanide, by heating in an atmosphere comprising one or more gases selected from the group consisting of noble gases, air, and nitrogen, wherein the at least one catalyst comprises nickel (0).