This paper provides a bibliography of the 1997 journal literature for adsorptive and membrane-type separations. The references are taken from the 50 most important chemical engineering journals. This paper provides an update to the literature as provided in previous bibliographic papers (Ray 1990, 1991. 1994, 1995, 1996a,b, 1997). A new edited book (Dabrowski 1998) concerned with adsorption and related separations also contains extensive bibliographies prepared by this author. A complete bibliographic listing of the chemical engineering journal literature from 1959 to 1997 (with subsequent six-monthly updates) is available on a CD-ROM database and full details can be obtained from the author. The papers included here have been divided into the following subject groups: theory; design data; adsorbents; PSA and cyclic systems, and applications; liquid-phase adsorption; ion exchange, chromatography and related separations; membranes; and membrane-type separations.