• 作者： Chang, F.W.; Wei, C.J.; Fang, S.S.
• 中文摘要： 葡萄糖觸媒氧化為一氣/液/固三相淤漿反應系統。質傳阻力對反應速率有極大之影響。本研究是以鉑/活性炭為觸媒,在淤漿反應器中探討葡萄糖氧化反應之動力學。實驗結果顯示,不同的氧氣來源對反應速率沒有影響。高的pH值可得到較好的葡萄糖轉化率,可是對於葡萄糖酸之選擇率大約在65到80%間。當液/固質傳阻力假設可以忽略,而其他阻力減至最小時,其反應速率對葡萄糖濃度、觸媒濃度和氧氣濃度皆為一次,其反應活化能為 14.16Kcal/mol(59.23 KJ/mol)。
• 英文摘要： Glucose oxidation over Pt/C catalysts is a gas/liquid/solid three-phase slurry reaction system. The mass transfer resistances have significant influence on reaction rate. Investigations were undertaken on the oxidation of glucose over Pt/C catalysts in a slurry reactor to study the reaction kinetics. The results show that different oxygen source has no significant effect on reaction. The reaction rate is increased with the increase of pH value, while the product selectivity to gluconic acid is decreased. The product selectivity to gluconic acid varies between 65 and 80%. When the liquid/solid mass transfer resistance is assumed to be negligible and the other resistances have been reduced to a minimum, the rate of glucose oxidation are all first order with respect to glucose concentration, catalyst concentration, and oxygen concentration. The activation energy of this reaction is found to be 14.16kcal/mol (59.23kJ/mol).
• 中文關鍵字： 葡萄糖; 氧化; 三相淤漿反應; 動力學; 鉑/活性碳觸媒
• 英文關鍵字： Glucose; Oxidation; Three-Phase Slurry Reaction; Kinetics; Platinum/Carbon Catalyst