Impacts of Alumina Introduction on a Pt–SO4/ZrO2 Catalyst in Light Naphtha Isomerization,Industrial & Engineering Chemistry Research

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Impacts of Alumina Introduction on a Pt–SO4/ZrO2 Catalyst in Light Naphtha Isomerization
Industrial & Engineering Chemistry Research ( IF 3.8 ) Pub Date : 2022-01-14 , DOI: 10.1021/acs.iecr.1c03040
Sinong Zhou ₁ , Yueqin Song ₁ , Jigang Zhao ₁ , Xiaolong Zhou ₁

Affiliation

Alumina-promoted Pt–SO₄/ZrO₂ catalysts (termed as PtSZAl) with excellent stability were prepared for isomerization. In the present work, the impacts of alumina on structure, surface properties, isomerization activity, and stability were investigated. The results of characterizations showed that alumina introduction improved the stability of tetragonal zirconia and increased the pore volume and the Brunauer–Emmett–Teller surface area. In addition, alumina also improved the water capacity of the catalyst, which contributed to better stability when the moisture content in the feed was high. The long-term life test was evaluated by n-hexane and reforming topping oil in about 1000 h. The conversion of n-hexane was higher than 90%, and the research octane number of reforming topping oil was increased from 62.8 to 79.3. Moreover, the used catalyst was regenerated nine times and the activity was almost not reduced, which proved that the reusability of PtSZAl catalysts was perfect.

中文翻译：

轻质石脑油异构化中氧化铝引入对 Pt-SO4/ZrO2 催化剂的影响

为异构化制备了具有优异稳定性的氧化铝促进的 Pt-SO ₄ /ZrO ₂催化剂（称为 PtSZAl）。在目前的工作中，研究了氧化铝对结构、表面性质、异构化活性和稳定性的影响。表征结果表明，氧化铝的引入提高了四方氧化锆的稳定性，增加了孔体积和 Brunauer-Emmett-Teller 表面积。此外，氧化铝还提高了催化剂的水容量，这有助于在进料中的水分含量高时获得更好的稳定性。用正己烷和重整顶油在约1000小时内评估了长期寿命试验。n的转换正己烷高于90%，重整顶油的研究法辛烷值从62.8提高到79.3。而且用过的催化剂经过9次再生，活性几乎没有降低，证明PtSZAl催化剂的重复使用性非常好。

更新日期：2022-01-26

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