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首页> 外文期刊>Journal of industrial and engineering chemistry >Isosynthesis via CO hydrogenation over SO4-ZrO2 catalysts
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Isosynthesis via CO hydrogenation over SO4-ZrO2 catalysts

机译：在SO4-ZrO2催化剂上通过CO加氢进行等位合成

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Catalytic performances of sulfated zirconia catalysts with various contents of sulfur (from 0.1 to 0.75%) on isosynthesis were studied. It was firstly found that undoped-zirconia synthesized from zirconyl nitrate provided higher activity towards isosynthesis reaction (106 (xmol kg-cat~(-1) s~(-1)) compared to that synthesized from zirconyl chloride (84.9 μmol kg-cat~(-1) s~(-1)). Nevertheless, the selectivity of isobutene in hydrocarbons was relatively lower. It was then observed that the catalytic reactivity and selectivity significantly improved by sulfur loading. The most suitable sulfur loading content seems to be at 0.1%, which gave the highest reaction rate and selectivity of isobutene. By applying several characterization techniques, i.e. BET, XRD, NH3- and CO2-TPD and SEM, it was revealed that the high reaction rate and selectivity towards isosynthesis reaction of sulfated zirconia catalysts are related to the acid-base properties, Zr~(3+) quantity and phase composition.
机译：研究了不同硫含量（0.1〜0.75％）的硫酸化氧化锆催化剂的同工合成性能。首先发现与硝酸氯锆（84.9μmolkg-cat）相比，硝酸硝酸氧锆合成的非掺杂氧化锆对异位合成反应的活性更高（106（xmol kg-cat〜（-1）s〜（-1）））。 〜（-1）s〜（-1））。然而，异丁烯在烃类中的选择性相对较低，然后观察到硫负载显着改善了催化反应性和选择性，最合适的硫负载量似乎是在0.1％的条件下，异丁烯的反应速率和选择性最高，通过BET，XRD，NH3-，CO2-TPD和SEM等多种表征技术的研究，表明硫酸盐的高反应速率和对异丁烯合成反应的选择性。氧化锆催化剂与酸碱性质，Zr〜（3+）数量和相组成有关。

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