caa a22 4500 475844742 CHVBK 20180406123910.0 cr unu---uuuuu 170329e20000301xx s 000 0 eng 10.1023/A:1019168102044 doi (NATIONALLICENCE)springer-10.1023/A:1019168102044 Influence of sulfation and structure of zirconia on catalytic isomerization of n ‐hexane [Elektronische Daten] [J.B. Laizet, A.K. Søiland, J. Leglise, J.C. Duchet] Two series of sulfated zirconia have been prepared by immersing amorphous or crystalline zirconia in an H2SO4 solution (0.25-2.5 M). They were compared with a commercial sulfated zirconium hydroxide. Activation temperature was varied between 300 and 725°C. Sulfate density varied so that the mean surface area of an individual sulfate ranged from 0.14 to 0.54 nm2. Three limiting sulfate states are evidenced and characterized by TPR‐MS. Catalysts are tested for isomerization of n‐hexane at 150°C and 3 MPa. Factors influencing the activity are discussed. The data show that a highly active and selective catalyst for producing hexane isomers requires tetragonal zirconia with a sulfate occupancy of about 0.40 nm2. Preparation parameters must therefore be adapted to match these constraints. Kluwer Academic Publishers, 2000 hexane isomerization nationallicence sulfated zirconia catalysts nationallicence sulfation nationallicence activation temperature effect nationallicence acid concentration effect nationallicence characterization of sulfate species by TPR nationallicence Laizet J.B. Catalyse et Spectrochimie, UMR‐CNRS 6506, ISMRA, Université de Caen, 6 Bd du Maréchal Juin, 14050, Caen, France aut Søiland A.K. Catalyse et Spectrochimie, UMR‐CNRS 6506, ISMRA, Université de Caen, 6 Bd du Maréchal Juin, 14050, Caen, France aut Leglise J. Catalyse et Spectrochimie, UMR‐CNRS 6506, ISMRA, Université de Caen, 6 Bd du Maréchal Juin, 14050, Caen, France aut Duchet J.C. Catalyse et Spectrochimie, UMR‐CNRS 6506, ISMRA, Université de Caen, 6 Bd du Maréchal Juin, 14050, Caen, France aut Topics in Catalysis Kluwer Academic Publishers-Plenum Publishers 10/1-2(2000-03-01), 89-97 1022-5528 10:1-2<89 2000 10 11244 https://doi.org/10.1023/A:1019168102044 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1023/A:1019168102044 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Laizet J.B. Catalyse et Spectrochimie, UMR‐CNRS 6506, ISMRA, Université de Caen, 6 Bd du Maréchal Juin, 14050, Caen, France aut NATIONALLICENCE 700 1- Søiland A.K. Catalyse et Spectrochimie, UMR‐CNRS 6506, ISMRA, Université de Caen, 6 Bd du Maréchal Juin, 14050, Caen, France aut NATIONALLICENCE 700 1- Leglise J. Catalyse et Spectrochimie, UMR‐CNRS 6506, ISMRA, Université de Caen, 6 Bd du Maréchal Juin, 14050, Caen, France aut NATIONALLICENCE 700 1- Duchet J.C. Catalyse et Spectrochimie, UMR‐CNRS 6506, ISMRA, Université de Caen, 6 Bd du Maréchal Juin, 14050, Caen, France aut NATIONALLICENCE 773 0- Topics in Catalysis Kluwer Academic Publishers-Plenum Publishers 10/1-2(2000-03-01), 89-97 1022-5528 10:1-2<89 2000 10 11244 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer