Dehydrogenation of isobutane to isobutene over supported gallium oxide microspherical catalysts was investigated in a fluidized-bed reactor. A partially crystallized nanostructured aluminum hydroxide-oxide, which is a product of gibbsite centrifugal thermal activation (CTA) obtained using a CEFLAR technology, was used as a catalyst support. The structural and textural properties of Ga₂O₃/Al₂O₃ catalysts were characterized by a range of techniques including XRD, N₂-physisorption, TPD of NH₃ and CO₂, IRS of adsorbed pyridine, and selective adsorption of a series of acid–base indicators. A Ga–Al oxide catalyst exhibited a stable performance close to activity of Cr–Al oxide catalysts not containing soluble hexavalent chromium. Upon addition of Cr₂O₃ (6 wt % of Cr), in amounts lower than in an industrial chromia/alumina catalyst (10.9% Cr), and 1% ZrO₂ to 6%Ga/Al₂O₃ catalytic activity in isobutane dehydrogenation reaches the performance of the industrial KDM catalyst (“Sintez”, Russia).

中文翻译：

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氧化铝负载的Ga ₂ O ₃和Ga ₂ O ₃ –Cr ₂ O ₃催化剂上的流化床异丁烷脱氢

在流化床反应器中研究了负载型氧化镓微球催化剂上异丁烷脱氢为异丁烯。使用CEFLAR技术获得的三水铝铁矿离心热活化（CTA）产物的部分结晶的纳米结构氢氧化铝被用作催化剂载体。镓的结构和织构特性₂ ö ₃ / Al的_2种ö ₃催化剂进行了表征由一系列的技术，包括XRD，N ₂ -physisorption，NH的TPD ₃和CO ₂，吸附的吡啶的IRS以及一系列酸碱指示剂的选择性吸附。Ga-Al氧化物催化剂表现出的稳定性接近于不含可溶性六价铬的Cr-Al氧化物催化剂的活性。当添加Cr ₂ O ₃（Cr的6 wt％）时，其含量低于工业氧化铬/氧化铝催化剂（10.9％Cr）中的含量，以及1％ZrO ₂至6％Ga / Al ₂ O ₃在异丁烷中的催化活性脱氢达到工业KDM催化剂（“ Sintez”，俄罗斯）的性能。