caa a22 4500 475758382 CHVBK 20180406123543.0 cr unu---uuuuu 170329e20000101xx s 000 0 eng 10.1007/BF02499062 doi (NATIONALLICENCE)springer-10.1007/BF02499062 Properties of surface acid sites of ZrO2 and SO4ZrO2-based systems studied by diffuse-reflectance Fourier-transform IR spectroscopy: adsorption of acetonitrile-d3 [Elektronische Daten] [A. Ivanov, L. Kustov] The properties of acid sites of ZrO2 and SO4/ZrO2-based systems modified by metal ions were studied by DRIFT spectroscopy using acetonitrile-d3 as a probe molecule. In the case of ZrO2. CD3CN interacts with the Lewis acid sites (LAS) with moderate strength. Adsorption on the Brönsted acid sites (BAS) is very weak, which indicates the absence of strong BAS on the surface of ZrO2. Modification of the surface by SO4 groups results in the appearance of a new type of BAS that are capable of adsorbing CD3CN in the polycoordinated form,i.e., stronger complexes with the adsorbate. Addition of metal ions (Fe, Ga, Zn, or Co) leads to the formation of a new type of LAS connected with Fe3+, Ga3+, Zn2+, and Co2+ promoter ions. Kluwer Academic/Plenum Publishers, 2000 superacids nationallicence zirconia nationallicence sulfated zirconia nationallicence adsorption nationallicence acetonitrile nationallicence DRIFT spectroscopy nationallicence Ivanov A. N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 47 Leninsky prosp., 117913, Moscow, Russian Federation aut Kustov L. N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 47 Leninsky prosp., 117913, Moscow, Russian Federation aut Russian Chemical Bulletin Kluwer Academic Publishers-Plenum Publishers 49/1(2000-01-01), 39-45 1066-5285 49:1<39 2000 49 11172 https://doi.org/10.1007/BF02499062 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF02499062 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Ivanov A. N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 47 Leninsky prosp., 117913, Moscow, Russian Federation aut NATIONALLICENCE 700 1- Kustov L. N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 47 Leninsky prosp., 117913, Moscow, Russian Federation aut NATIONALLICENCE 773 0- Russian Chemical Bulletin Kluwer Academic Publishers-Plenum Publishers 49/1(2000-01-01), 39-45 1066-5285 49:1<39 2000 49 11172 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer