02112nas a2200265   4500008004100000022001400041245016200055210006900217260000800286300001100294490000800305520120000313653001301513653002101526653001101547653001601558653002301574653001101597100001901608700002601627700002401653700002001677700001801697856013101715       2020                        eng d  a0961-953400aMaximization of furanic compounds formation by dehydration and hydrogenation of xylose in one step over SO3-H functionalized H-beta catalyst in alcohol media0 aMaximization of furanic compounds formation by dehydration and h  cAUG  a1056460 v1393 a<p>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-beta zeolite was successfully prepared and used for the synthesis of furanic compounds especially FUR and F. Alc from c-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-beta-SO3-H catalyst with optimized reaction parameters of 150 degrees 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 similar to 25% after 3 recycle runs.</p>
10afurfural10aFurfuryl alcohol10aH-beta10aisopropanol10asulfonated zeolite10aXylose1 aGupta, Anshita1 aNandanwar, Sachin, U.1 aNiphadkar, Prashant1 aSimakova, Irina1 aBokade, Vijay  uhttps://library.ncl.res.in/content/maximization-furanic-compounds-formation-dehydration-and-hydrogenation-xylose-one-step-over02121nas a2200277   4500008004100000022001400041245013400055210006900189260000800258300001100266490000700277520120900284653001501493653001501508653001101523653000801534653001901542653002301561653001001584100002401594700002801618700002601646700002001672700002201692856012901714       2021                        eng d  a1944-744200aMilder operating parameters for one-step conversion of fructose to levulinic acid over sulfonated H-beta zeolite in aqueous media0 aMilder operating parameters for onestep conversion of fructose t  cJAN  ae135300 v403 a<p>The sulfonated H-beta zeolite was successfully prepared and used for the synthesis of levulinic acid (LA) fromD-fructose. The catalyst was characterized by powder X-ray diffraction, Fourier transform infrared spectroscopy, scanning electron microscope, N-2 physisorption, NH3-temperature programmed desorption and carbon-hydrogen-nitrogen-sulfur analysis. The total acid amount is increased with increase in sulfur loading, confirmed that the sulfonic acid group (SO3-H) is successfully grafted onto zeolite structure. The various parameters such as different amount of sulfur loading, reaction temperature, time, catalyst loading was studied for selective production of LA. The catalytic activity of sulfonated H-beta (S-beta) zeolite was found to be efficient for synthesis of LA from D-fructose in aqueous media. Maximum LA yield of 43.5 mol%, low HMF yield (&lt;1%) with 98.15% fructose conversion was obtained with 3% S-beta catalyst at 160 degrees C for 7 hr. The catalyst was reusable for minimum three times by H2O2 regeneration. This study provides the new zeolitic catalyst for the efficient production of LA at shorter reaction time (7 hr) and low catalyst to substrate ratio (0.7:1).</p>
10aconversion10aD-fructose10aH-beta10aHMF10alevulinic acid10asulfonated zeolite10ayield1 aBisen, Swapneel, K.1 aNiphadkar, Prashant, S.1 aNandanwar, Sachin, U.1 aSimakova, Irina1 aBokade, Vijay, V.  uhttps://library.ncl.res.in/content/milder-operating-parameters-one-step-conversion-fructose-levulinic-acid-over-sulfonated-h02017nas a2200265   4500008004100000245013200041210006900173260000800242300001100250490000700261520119700268653001501465653001501480653000901495653000801504653001901512653002301531653001001554100002401564700002801588700002601616700002001642700002201662856006701684       2021                        eng d00aMilder operating parameters for one-step conversion of fructose to levulinic acid over sulfonated H-β zeolite in aqueous media0 aMilder operating parameters for onestep conversion of fructose t  cFEB  ae135300 v403 aAbstract The sulfonated H-β zeolite was successfully prepared and used for the synthesis of levulinic acid (LA) from D-fructose. The catalyst was characterized by powder X-ray diffraction, Fourier transform infrared spectroscopy, scanning electron microscope, N2 physisorption, NH3-temperature programmed desorption and carbon–hydrogen–nitrogen–sulfur analysis. The total acid amount is increased with increase in sulfur loading, confirmed that the sulfonic acid group (SO3-H) is successfully grafted onto zeolite structure. The various parameters such as different amount of sulfur loading, reaction temperature, time, catalyst loading was studied for selective production of LA. The catalytic activity of sulfonated H-β (S-β) zeolite was found to be efficient for synthesis of LA from D-fructose in aqueous media. Maximum LA yield of 43.5 mol%, low HMF yield (<1%) with 98.15% fructose conversion was obtained with 3% S-β catalyst at 160°C for 7 hr. The catalyst was reusable for minimum three times by H2O2 regeneration. This study provides the new zeolitic catalyst for the efficient production of LA at shorter reaction time (7 hr) and low catalyst to substrate ratio (0.7:1).10aconversion10aD-fructose10aH-β10aHMF10alevulinic acid10asulfonated zeolite10ayield1 aBisen, Swapneel, K.1 aNiphadkar, Prashant, S.1 aNandanwar, Sachin, U.1 aSimakova, Irina1 aBokade, Vijay, V.  uhttps://aiche.onlinelibrary.wiley.com/doi/abs/10.1002/ep.13530