Production of fatty alcohols through selective hydrogenation of fatty acids was studied over a 4% ReO _x /TiO₂ catalyst. Stearic acid was hydrogenated to octadecanol at temperatures and pressures between 180–200°C and 2–4MPa, with selectivity reaching 93%. A high yield of octadecanol was attributed to a strong adsorption of the acid compared to alcohol on the catalyst, which inhibits further alcohol transformation to alkanes. Low amounts (<7%) of alkanes (mainly octadecane) were formed during the conversion of stearic acid. However, it was found that the catalyst could be tuned for the production of alkanes. The reaction intermediates were octadecanal and stearyl stearate. Based on the reaction products analysis and catalyst characterization, a reaction mechanism and possible pathways were proposed.

中文翻译：

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在高度分散的ReOx / TiO2催化剂上将脂肪酸选择性氢化为醇

在4％ReO _x / TiO _2上研究了通过脂肪酸的选择性加氢生产脂肪醇催化剂。硬脂酸在180–200°C和2-4MPa之间的温度和压力下被氢化成十八烷醇，选择性达到93％。与醇相比，十八烷醇的高收率归因于该酸在催化剂上的强吸附性，从而抑制了醇进一步转化为烷烃。在硬脂酸转化过程中形成少量（＜7％）的烷烃（主要是十八烷）。但是，发现可以调节催化剂以生产烷烃。反应中间体是十八烷基和硬脂酸硬脂基酯。基于反应产物的分析和催化剂的表征，提出了反应机理和可能的途径。