Laboratory of Industrial Chemistry and Reaction Engineering Process, Chemistry Centre, Abo Akademi University, Biskopsgatan 8, 20500 Abo-Turku, Finland.
ChemSusChem. 2010 Jun 21;3(6):708-18. doi: 10.1002/cssc.200900254.
Aqueous phase reforming of sorbitol over Pt supported on an alumina catalyst is investigated, in order to identify the intermediates involved in the transformation of the initial feed. Parameters such as the sorbitol feed rate and temperature are studied. To identify the intermediates, an approach based on analysis of the gas and liquid phases as well as the total carbon content was developed. According to analysis by gas chromatography combined with mass spectrometry of volatile substances collected with solid-phase microextraction, over 260 compounds are involved in the transformation of sorbitol. Of these, 50 of the major products are identified with high reliability. It is shown that a great variety of compounds, bearing different functionalities, form part of the reaction network. The formation of the majority of identified compounds is explained and a reaction network for the formation of sorbitol and intermediate molecules transformation is proposed.
考察了负载在氧化铝催化剂上的 Pt 对山梨醇的水相重整反应，以确定初始进料转化过程中涉及的中间体。研究了山梨醇进料速率和温度等参数。为了鉴定中间体，开发了一种基于分析气、液相以及总碳含量的方法。根据固相微萃取收集的挥发性物质的气相色谱-质谱联用分析，涉及 260 多种化合物的山梨醇转化。其中，有 50 种主要产物被高可靠性地鉴定出来。结果表明，形成反应网络的化合物种类繁多，具有不同的官能团。解释了大多数鉴定化合物的形成，并提出了山梨醇和中间分子转化形成的反应网络。
