Abstract

The deep processing of heavy oil increases the production of hydrocarbon gases. The resulting butanes do not always find an equivalent market. A mixture of oxygenates with a high octane number is obtained in this work via oxidation of industrial isobutane fraction. The reaction proceeds both in with and without using Au/Silicalite-1 and Cu/SiO₂ as catalysts. The influence of factors that reduce the formation of undesirable impurities (hydroperoxides, peroxides, and acids) is studied. Tert-butyl alcohol (TBA) obtainable with a selectivity of 64–69% and butane conversion of 55–69% is a target product. TBA has a RON of 113. Alcohols and ketones having RONs within 106–115 appear together with TBA during the oxidation. The best result was obtained for a Cu/SiO₂ catalyst. More than 18% of TBA and 2.9 times more ketones are removed from a unit volume of a reaction space in the presence of a catalyst than during oxidation without a catalyst. The total productivity of the products suitable as high-octane components is 40 g/(L h), while the RON of this mixture is ≈111. A mixture of oxygenates including TBA has a lower volatility than that of methyl tert-butyl ether, which is especially important for the stability of gasolines in summer.

中文翻译：

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通过工业异丁烷馏分的氧化制备高辛烷值汽车燃料组分

摘要

重油的深加工增加了碳氢化合物气体的产量。由此产生的丁烷并不总是能找到等效的市场。通过氧化工业异丁烷馏分，可以得到高辛烷值的含氧化合物的混合物。在使用和不使用Au / Silicalite-1和Cu / SiO ₂作为催化剂的情况下，反应均进行。研究了减少不良杂质（氢过氧化物，过氧化物和酸）形成的因素的影响。目标产物是叔丁醇（TBA），其选择性为64-69％，丁烷转化率为55-69％。TBA的RON为113。氧化过程中，与TBA一起出现的RON在106-115之间的醇和酮。对于Cu / SiO ₂可获得最佳结果催化剂。与没有催化剂的氧化过程相比，在存在催化剂的情况下，从单位体积的反应空间中除去了超过18％的TBA和2.9倍的酮。适合用作高辛烷值组分的产品的总生产率为40 g /（L h），而该混合物的RON为≈111。含TBA的含氧化合物混合物的挥发性低于甲基叔丁基醚的挥发性，这对于夏季汽油的稳定性尤为重要。