Process for producing hydrophobic molecular sieve using Y-zeolite

摘要

The present invention relates to a process for preparing a hydrophobic molecular sieve, and a process for producing a hydrophobic zeolite by dealumination of a hydrophilic zeolite, which comprises treating a hydrophilic Y-zeolite with an oxalic acid or a chelating agent and a dealumination process and a silicon tetrachloride vapor And the obtained zeolite can be industrially usefully used, such as a cracking catalyst.