摘要
利用XRD,SEM,TEM,BET表征手段对其进行物相结构、微观形貌、比表面积分析,以此为催化剂并将其应用于催化果糖脱水制备5-羟甲基糠醛(5-HMF).研究了反应温度、反应时间、催化剂用量等对5-HMF收率的影响,从而得到最佳反应条件.研究结果表明:以二甲基亚砜(DMSO)为溶剂,反应温度130℃、反应时间5 h、催化剂用量为果糖用量5%时,5-HMF收率达到56. 6%;催化剂具有较高的重复使用性能,经重复使用3次后,5-HMF收率只下降2. 7%.
The method of hydrothermal synthesis was adopted to prepare titanate nanotubes using P25TiO 2 powder as raw material,and then protonated titanate nanotubes were obtained after pickling with hydrochloric acid. XRD,SEM,TEM,and BET were used to analyze the phase structure,microstructure,and specific surface area.The protonated titanate nanotubes were applied to catalyze the dehydration of fructose to prepare 5-hydroxymethylfurfural (5-HMF). The effects of reaction temperature,reaction time and catalyst amount on the yield of 5-HMF were studied,and the reaction conditions were optimized. The results showed that the yield of 5-HMF reached 56.6% when dimethyl sulfoxide (DMSO) was used as the solvent,the reaction temperature was 130 ℃,the reaction time was 5 h,and the amount of catalyst was 5% fructose in mass fraction. After the catalyst was reused for three times,the yield decreased only by 2.7%,indicating that the catalyst had better reusability.
作者
蒋梦
赫文秀
张永强
刘斌
JIANG Meng;HE Wen-xiu;ZHANG Yong-qiang;LIU Bin(Chemistry and Chemical Engineering School,Inner Mongolia University of Science and Technology,Baotou 014010,China)
出处
《内蒙古科技大学学报》
CAS
2019年第1期70-75,共6页
Journal of Inner Mongolia University of Science and Technology
