Zeolite synthesis using 1-benzyl-1-methylpyrrolidinium in the presence of Na+ as co-structure directing agent

1-Benzyl-1-methylpyrrolidinium (bmp) has been used as structure directing agent either alone or with Na as a co-structure directing agent, in the synthesis of aluminum containing zeolite materials in the presence of fluoride. The addition of Na affects the final synthesis products. When used alone, bmp yielded a mixture of zeolitic phases in aluminosilicate preparations at long times of crystallization (45 days). In contrast, the sodium-containing gels yielded crystalline phases in only 20 days at the same conditions. Sodium was not incorporated within the final products, but would be rather consumed in the formation of the sodium hexafluoroaluminate, cryolite. However, its presence modifies the chemistry of the gel and shows the high influence that a small amount of a cation exerts in the crystallization process.