| abstract |
(57) [Summary] [Objective] An adsorbent for purifying hydrocarbons and a method for adsorbing and removing hydrocarbons. [Structure] A crystalline silicate having a molecular sieve structure which carries silver, and a crystalline silicate having a molecular sieve structure in a dehydrated state is represented by a molar ratio of oxides, and is (1 ± 0.6) R 2 O ・ [aM 2 O 3 ・ bAl 2 O 3 ・ cMeO] .ySiO 2 (wherein R is an alkali metal ion and / or hydrogen ion, M is a group selected from the group consisting of a Group VIII metal, a rare earth metal, titanium, vanadium, chromium, niobium, antimony and gallium. The above metals, Me is an alkaline earth metal, a ≧ 0, b ≧ 0, c ≧ 0, a + b = 1, y / c> 1 2, a hydrocarbon adsorbent which is a crystalline silicate having the chemical formula y> 12) and having the X-ray diffraction pattern shown in Table A detailed herein. |