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Maximization of furanic compounds formation by dehydration and hydrogenation of xylose in one step over SO3–H functionalized H-β catalyst in alcohol media
Biomass & Bioenergy ( IF 5.8 ) Pub Date : 2020-07-06 , DOI: 10.1016/j.biombioe.2020.105646
Anshita Gupta , Sachin U. Nandanwar , Prashant Niphadkar , Irina Simakova , Vijay Bokade

Furanic compounds such as furfural (FUR); furfuryl alcohol (F. Alc) are important renewable platform chemicals can be used as such or further convert for preparation of other value added products such as Levulinic acid (LA), Alkyl Levulinates, 2-Methyltetrahydrofuran (MTHF), and Tetrahydrofuran (THF) etc. Sulfonated H-β zeolite was successfully prepared and used for the synthesis of furanic compounds especially FUR and F. Alc from d-xylose in one step using isopropanol as alcohol media. Prepared catalyst was well characterized by powder X-ray diffraction (XRD), scanning electron microscopy (SEM), BET, NH3-Temperature programmed desorption (TPD) and carbon-hydrogen-nitrogen-sulfur analysis (CHNS). It was found the total acid amount was increased with increase in sulfur loading which confirmed the sulfonic acid group (SO3–H) was successfully grafted onto zeolite structure. 3 wt% H-β–SO3–H catalyst with optimized reaction parameters of 150 °C, 7 h, 25 wt% catalyst loading was tuned to get the highest furanic compound yield of 88.5% (FUR 76.8% + F.Alc 11.7%).The reusability study confirmed that there was a marginal drop of ~25% after 3 recycle runs.



中文翻译:

在酒精介质中,在SO 3 -H官能化的H-β催化剂上一步完成木糖脱水和氢化反应,从而形成呋喃化合物

呋喃化合物,例如糠醛(FUR);糠醇(F. Alc)是重要的可再生平台化学品,可以原样使用,也可以进一步转化为制备其他增值产品,例如左旋丙酸(LA),烷基戊酸酯,2-甲基四氢呋喃(MTHF)和四氢呋喃(THF)成功地制备了磺化等等H-β沸石和用于从呋喃化合物尤其FUR和F.酒精度的合成d使用异丙醇作为醇介质在一个步骤中木糖。粉末X射线衍射(XRD),扫描电子显微镜(SEM),BET,NH 3对制得的催化剂进行了很好的表征。-温度程序解吸(TPD)和碳氢氮硫分析(CHNS)。发现总酸量随硫载量的增加而增加,这证实了磺酸基(SO 3 -H)已成功接枝到沸石结构上。调整了3 wt%的H-β–SO 3 –H催化剂,优化了150°C,7 h,25 wt%的催化剂负载量的反应参数,以使呋喃化合物的最高收率为88.5%(FUR为76.8%+ F.Alc 11.7可重复使用性研究证实,经过3次循环运行后,边际下降了约25%。

更新日期:2020-07-06
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