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OALib Journal期刊
ISSN: 2333-9721
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碱促进剂在Ru/CNFs催化山梨醇氢解制备二元醇中的作用
DOI: 10.1016/S1872-2067(14)60083-8, PP. 692-702
Keywords: 山梨醇,氢解,碱促进剂,二元醇,钌催化剂
Abstract:
？研究了NaOH，KOH，Mg（OH）2，Ba（OH）2和CaO等5碱促进剂在Ru/CNFs催化山梨醇氢解过程中的作用机制.结果表明，这些碱均能显著提高山梨醇的转化率，但生成二元醇的选择性随碱种类而有所差异，其中以CaO促进的催化剂二元醇选择性最高.CaO提供了用以催化C-C键断裂的OH-，同时与中间产物形成络合物从而影响反应历程.提出了CaO作为促进剂时山梨醇氢解生成二元醇的反应历程，并由此进一步优化了山梨醇浓度、Ru催化剂用量和碱促进剂用量之间的匹配以达到更高的二元醇产率.
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