Adsorption of alpha-tocopherol on a clinoptilolite modified with organosilanes

作者：Kotova D L; Vasilyeva S Yu^*; Krysanova T A; Semenov V N; Artamonova M N

来源：Protection of Metals and Physical Chemistry of Surfaces, 2017, 53(2): 231-235.

DOI：10.1134/S2070205117010129

Adsorption of alpha-tocopherol on a clinoptilolite modified with trimethylchlorosilane and dimethyldichlorosilane from ethanol, ethyl acetate, and hexane solutions was studied. Equilibrium adsorption was shown to involve steps of monolayer fixing of alpha-tocopherol and to form associates in mesopores of the sorbent modified. The monomolecular adsorption was shown to be determined by dispersion interactions between modifier's alkyl groups and adsorbate's isoprenoid radical. Formation of the associates in the adsorption layer occurs due to interaction of alpha-tocopherol's isoprenoid radicals. The silylated clinoptilolite was found to possess a great affinity to alpha-tocopherol upon sorption from hexane.

• 出版日期2017-3