Acidic Properties of Various Silica Catalysts Doped with Chromium for the Oxidative Dehydrogenation of Isobutane to Isobutene

JOURNAL OF CHEMICAL ENGINEERING OF JAPAN

Toshiya Yasukawa²  Yuuki Katou²  Keizo Nakagawa³  Shuji Akihara²  Yoshihisa Nitta¹  Ai Itagaki¹  Wataru Ninomiya²  Masahiro Katoh³  Shigeru Sugiyama³  Takuya Ehiro¹ 

[1] Department of Chemical Science and Technology, The University of Tokushima;Otake Research Laboratories, Mitsubishi Rayon Co., Ltd.;Department of Advanced Materials, Institute of Technology and Science, The University of Tokushima

关键词: Oxidative Dehydrogenation;    Isobutane;    Isobutene;    FSM-16;    Chromium-Doping;   

DOI  :  10.1252/jcej.14we112

来源: Maruzen Company Ltd

【 摘 要 】

References(26)Cited-By(3)Although previous researchers have found that FSM-16 (#16 Folded Sheet Mesoporous material) doped with chromium and related Cr-doped silica catalysts has shown great activity for the oxidative dehydrogenation of isobutane to isobutene, information on the nature of these catalysts is insufficient. For this study, three types of Cr-doped silica catalysts were prepared by applying the template ion exchange method. CrOx/FSM-16 and CrOx/SiO2 were used as references. These catalysts were used for oxidative dehydrogenation, which was then characterized via various techniques. The most active catalyst was Cr-doped silica, which did not have the hexagonal structure that is characteristic of mesoporous FSM-16. Various characterizations showed that the catalytic activity of the Cr-species, stemmed from a weak acidic nature and a redox nature that originated from the combination of silicate and a Cr cation, as opposed to the hexagonal structure and strong acidic nature of FSM-16.

【 授权许可】

Unknown