Shuichi Yoshida

TL;DR: In this article, a highly hydrophobic DDR-type zeolite membrane was prepared on the outer surface of a porous α-alumina tube for CO2/CH4 separation.

TL;DR: In this paper, an all-silica Deca-deca-dodecasil 3R (DD3R) zeolite was synthesized and the adsorption properties of carbon dioxide and methane were examined on the allsilica DD3R Zeolite.

TL;DR: In this article, the authors investigated the selectivity of CO 2, N 2 and CH 4 and their mixtures through a DDR membrane over a wide range of temperatures and pressures.

TL;DR: In this paper, a DDR membrane was used for CO2 removal from a 50∶50 feed mixture with high selectivity of over 4000 at 225 K. This was attributed to the higher adsorption affinity, as well as the higher mobility for the smaller CO2 molecules in the zeolite, preventing the bypassing of the CH4 through the membrane.

TL;DR: In this article, the authors provided a zeolite membrane which is thinner than a conventional membrane and which has improved permeability and a method for manufacturing the zeolites membrane, which includes a surface layer forming step for forming asurface layer by attaching a low polar polymer on a first surface of a porous substrate to cover the surface, a filling step for filling a masking polymer into pores in the porous substrate from a surface different from the first surface up to the surface layer by impregnating the porous surface with the masking polymers and solidifying the masks, and a