The pathways for the conversion of model compounds (acetone, n-hexane, hexene-1, cyclohexane, benzene) in pure form and acetone–hydrocarbon binary mixtures on Y and ZSM-5 zeolites are investigated. The conditions of the experiments simulate the catalytic cracking of bio-oil in a mixture with conventional feed. For the n-hexane–acetone model mixture, a significant effect of acetone addition on hydrocarbon transformation is observed, including the suppression of propane formation and an increase in the selectivity for C₃–C₄ olefins. In addition to enhanced olefins formation, the in situ Fourier transformed infrared (FTIR) spectroscopy results indicate a change in the reaction pathways of the acetone conversion in a hydrocarbon medium that also depends on the zeolite type (Y or ZSM-5). A reaction scheme is proposed, taking into account the change in the composition of the primary products of hydrocarbon cracking upon the introduction of a ketone.

中文翻译：

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丙酮在烃Y和ZSM-5催化剂上作为烃类介质中模型生物加氧物的反应途径：原位FTIR研究

对于模型化合物（丙酮，转化途径Ñ己烷，己烯-1，环己烷，苯）以纯的形式和在Y和ZSM-5沸石丙酮-烃二元混合物进行了研究。实验条件模拟了与常规进料的混合物中生物油的催化裂化。对于Ñ正己烷-丙酮混合物模型，丙酮的加入对烃转化的显著效果，观察到，包括丙烷形成的抑制和对C的增加选择性₃ -C ₄烯烃。除了增强烯烃的形成外，原位傅里叶变换红外（FTIR）光谱结果表明，烃类介质中丙酮转化反应路径的变化也取决于沸石类型（Y或ZSM-5）。考虑到引入酮后烃裂化初级产物的组成变化，提出了一种反应方案。