Preparation of Silicalite-1 Micromembranes on Laser-Perforated Stainless Steel Sheets

Abstract

Zeolite (silicalite-1) micromembranes having only approximately 0.005 mm2 of permeation area have been prepared on laser-perforated, 75-μm-thick stainless steel sheets. Arrays of these micromembranes performed well in the gas-phase separation of a propane/N2 mixture, showing a hydrocarbon permeance at least an order of magnitude larger than those of the conventional zeolite membranes.

ZIF-8 micromembranes for gas separation prepared on laser-perforated brass supports

“…The closest precedent to this work dealt with the preparation of silicalite-1 micromembranes on laser perforated stainless steel sheets. 44 In the present work, the metal support composition-MOF ZIF-8 chemical matching seems to be optimum due to the presence of Zn as a shared element in both parts, and this represents an ideal opportunity. Finally, in addition to performing simultaneous separation and reaction operations in the same way as conventional zeolite or MOF membranes, porous micromembranes may provide easy integration into other microsystems and allow better operational (e.g.…”

Reinforced SIL-1 micromembranes integrated on chip: Application to CO2 separation

“…Up to now, the preparation of zeolite micromembranes has generally followed one of two approaches. Silicalite micromembranes were synthesized on 75 µm thick laserperforated stainless steel sheets using a seeded growth method [17][18]. In this way, a method to obtain permselective membranes on 75 micron thick stainless steel sheets was obtained.…”

Laser Control of Zeolite Nucleation

“…In the latter study, the laser influence on the zeolite crystal growth was not studied. In addition, laser microperforated stainless steel sheets have been used for the synthesis of silicalite‐1 micromembranes 20. 21 However, no laser liquid irradiation has been used until now as a means of controlling zeolite crystal size.…”