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以Raney Ni为催化剂,对甲醇水相重整制氢与生物油酚类模型化合物的原位加氢反应进行研究,探究不同催化剂用量、反应时间和反应温度对苯酚原位加氢转化率和目标产物得率的影响,在最佳反应条件下对不同酚类的原位加氢进行考察。研究表明:反应温度为220℃,加热电压和搅拌速度一定,Raney Ni用量为1.5 g,反应7 h后,苯酚的转化率为91.64%,目标产物得率为84.09%。采用加氢耦合反应,生物油的酚类模型化合物转化率明显高于外部供氢的转化率,同时可简化液相催化氢化反应生产工艺,避免外部供氢存在的多种问题,为生物油的提质精炼提供新的研究思路与实验基础。
The Raney Ni catalyst was used to study the in-situ hydrogenation reaction of methanol aqueous phase reforming and bio-oil-phenol model compounds. The effects of different catalyst dosage, reaction time and reaction temperature on in-situ hydroconversion of phenol and target Product yield, under the best reaction conditions for different phenols in situ hydrogenation were investigated. The results showed that the reaction temperature was 220 ℃, the heating voltage and stirring speed were constant, the amount of Raney Ni was 1.5 g, the conversion of phenol was 91.64% and the yield of target product was 84.09% after 7 h reaction. Using hydrogenation coupling reaction, the conversion rate of the phenolic compound of the bio-oil is obviously higher than the conversion rate of the external hydrogen supply, meanwhile, the production process of the liquid-phase catalytic hydrogenation can be simplified and various problems of external hydrogen supply can be avoided. Quality refining provides new research ideas and experimental basis.