頁籤選單縮合
題名 | 鈷鎳硼觸媒在木糖催化氫化成木糖醇之應用=Application of CoNiB Catalyst in the Catalytic Hydrogenation of Xylose to Xylitol |
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作者姓名(中文) | 廖炳傑; 游汶玟; 許榕豈; | 書刊名 | 桃園創新學報 |
卷期 | 34 2014.12[民103.12] |
頁次 | 頁341-351 |
分類號 | 460.02 |
關鍵詞 | 化學還原法; CoNiB觸媒; 木糖; 氫化; 木糖醇; 促進劑; Chemical reduction; CoNiB catalyst; Xylose; Hydrogenation; Xylitol; Promoter; |
語文 | 中文(Chinese) |
中文摘要 | 本研究採化學還原法以硼氫化鈉為還原劑製備CoNiB奈米觸媒,以BET、ICP、 XRD、DSC、TEM與 XPS等技術分析瞭解觸媒的物理及表面性質,並以木糖氫化成木糖醇之水溶液相反應評估觸媒的催化能力。反應條件藉改變觸媒之金屬比例、木糖起始濃度、反應壓力及溫度予以最適化,以達成最高的反應性。 CoNiB觸媒於木糖氫化之反應性高,活性不僅優於 NiB與 CoB觸媒,更遠高於傳統倫尼鎳觸媒。CoNiB觸媒中添加少量釷、鉻或鉬,能進一步提升木糖之氫化活性。 |
英文摘要 | CoNiB nano-catalysts are prepared by chemical reduction with sodium borohydride. Physical and surface properties of catalysts are characterized by techniques of BET, ICP, XRD, DSC, TEM and XPS. Catalytic behaviors of catalysts are evaluated in the hydrogenation of xylose to xylitol under aqueous phase system. The reaction conditions are optimized by varying the metal ratio of catalyst, initial xylose concentration, reaction pressure and temperature to achieve the maximum reactivity. CoNiB catalysts are highly reactive in the hydrogenation of xylose. They are significantly more active than NiB and CoB, and much more active than conventional Raney nickel catalyst. Furthermore, a small amount of Th, Cr or Mo incorporated into CoNiB can promote the activity of the xylose hydrogenation. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。