Zeolite Y deposition on aluminum substrate without structure directing agents (SDAs)

Abstract

Zeolite Y was deposited on an aluminum substrate without using structure directing agents (SDAs) (e. g. tetrapropyl-ammonium hydroxide: TPAOH). Zeolite Y powder that contained NaOH solution and an Al disk are pressed at 40 MPa uniaxially and heated up to 130 °C for 1 h through an autoclave for hydrothermal hot-pressing (HHP). Solidification of zeolite Y powder and deposition on Al substrate have been achieved simultaneously through the above shown treatment. The deposited zeolite Y has no secondary phase by pyrolytic decomposition and a dense structure. No other oxide layer generates at interface between the deposited zeolite Y and Al substrate. The interface has good adhesive property and high contact area. It is firstly demonstrated that the simple heat and pressing treatment is useful for zeolite Y deposition on Al substrate without using SDA.