• 作者： Wang, Ten-Tsai; Shyu, Jin-Rong
• 中文摘要： 本研究試用碳基鐵、銠與釕之氯化物及銠與釕之三苯磷複合物為催化劑,以氫化葡萄糖而產生山梨醣醇。在這些催化劑中以 RuCl/sub 3/-2PPh/sub 3/最為實用。提出以此催化劑之氫化機構,並衍導山梨醣醇之總生成速率方程式。此式可解釋攪拌速率、反應溫度、催化劑與葡萄糖之濃度、二氧雜環己烷對水之體積比、以及氫壓等對山梨醣醇之生成速率之影響之實驗結果。在90.degree.C、500rpm、葡萄糖初濃度0.2M、H/sub 2/O 17mL、(CH/sub 2/)/sub 4 /O/sub 2/ 33mL、氣壓3atm及1.98*10/sup -3/M RuCl/sub 3/與 3.88*10/sup -3/M PPh/sub 3/等條件下反應二小時,可得95%產率之山梨醣醇。本研究提供了在溫和條件下合成山梨醣醇之一新而有效之方法。
• 英文摘要： Iron carbonyls, rhodium and ruthenium chlorides and phosphine complexes of rhodium and ruthenium were used for the hydrogenation of glucose so as to yield sorbital. RuCl/sub 3/-2PPh/sub 3/ was found to be the most practical among these catalysts. The mechanism of the hydrogenation with the catalyst was proposed, and the overall formation rate equation of sorbitol was derived. The rate equation accounted for the effects of stirring speed, reaction temperature, concentrations of catalyst and glucose, volume-ratio of dioxane to water and hydrogen pressure on the formation rate of sorbitol. Under the conditions of 90.degree.C, 500rpm, initial concentration of glucose 0.2M, 17mL H/sub 2/O, 33mL dioxane, 3atm hydrogen pressure, 1.98*10/sup -3/M RuCl/sub 3/ and 3.88*10/sup -3/M PPh/sub 3/, 95% yield of sorbitol was obtained within 2 hrs of reaction time. A new and effective method was provided in this study for the synthesis of sorbitol under mild reaction conditions.
• 中文關鍵字： 有機金屬觸媒; 氫化; 葡萄糖; 山梨糖醇
• 英文關鍵字： Organometallic Catalysis; Hydrogenation; Glucose; Sorbitol