Tuning the pore sizes of novel silica membranes for improved gas permeation properties via an in situ reaction between NH3 and Si-H groups

Masakoto Kanezashi; Rui Matsugasako; Hiromasa Tawarayama; Hiroki Nagasawa; Tomohisa Yoshioka; Toshinori Tsuru

doi:10.1039/c4cc09159k

Tuning the pore sizes of novel silica membranes for improved gas permeation properties via an in situ reaction between NH3 and Si-H groups

Chem Commun (Camb). 2015 Feb 14;51(13):2551-4. doi: 10.1039/c4cc09159k.

Authors

Masakoto Kanezashi¹, Rui Matsugasako, Hiromasa Tawarayama, Hiroki Nagasawa, Tomohisa Yoshioka, Toshinori Tsuru

Affiliation

¹ Department of Chemical Engineering, Hiroshima University, 1-4-1 Kagamiyama, Higashi-hiroshima, 739-8527, Japan. kanezashi@hiroshima-u.ac.jp.

PMID: 25566848
DOI: 10.1039/c4cc09159k

Abstract

A new concept was proposed to control the pore size in a novel silica membrane. The tuning of the pore sizes in triethoxysilane (TRIES)-derived membranes was successfully conducted via an in situ reaction between NH3 and Si-H groups at high temperatures. The formation of Si-NH2 and/or Si-NH groups in the silica structure enhanced the hydrogen selectivity.