泡桐在水中直接液化铁催化剂的研究

Research on Iron Catalyst by the Direct Liquefaction of Paulownia in Water

以铁粉为催化剂,在1L高压釜中研究泡桐在水中的高压液化,发现泡桐的液化率明显高于不加铁时纯水中的液化率。为了考察铁的催化作用,对液化后所得液相和残渣中不同价态的铁含量进行测定,考察反应温度、停留时间和催化剂量的变化对液化后铁催化剂在液相和残渣中分布的影响。结果表明:液化后液相中仅含有极少量的铁离子,且主要是Fe2+形式存在;大量的铁仍存在于固相中,固相中的2价铁约占60%,单质铁约占30%,同时存在少量3价铁。

Paulownia was directly liquefied under hot - compressed water with iron as catalyst, discovered that the liquefaction yield of paulownia was much higher than in pure water without iron as catalyst. To investigate the catalysis action of iron, the dosage of the iron after liquefaction in liquid phase and solid residue was studied, and the effect of temperature, holding time and dosage of catalyst on the iron distribution in hquid phase and solid residue was researched. The results revealed that little iron exist in liquid phase, and mainly in the form of Fe^2＋; a great deal of iron existed in solid residue, in which the content of Fe^2＋ was the largest about 60%, FeO was the second content about 30% , Fe^3＋ was the least.