Gas separation membrane Applicant: Shell Oil Co, USA, and Shell Internationale Research Maatschappij Bv, The Netherlands

摘要

This patent provides details of a gas separation and a method of preparing such a material. The approach described makes use of a porous structure upon which is supported a membrane layer comprising a first gas-selective material. A substantial portion of the first gas-selective material is removed from the membrane layer using an ultra-fine abrasive.