02276nas a2200169   4500008004100000022001400041245011300055210006900168260000800237300001600245490000700261520163500268100002501903700002601928700002001954856013201974       2021                        eng d  a1144-054600aEnhanced one-pot selective conversion of cellulose to ethylene glycol over NaZSM-5 supported metal catalysts0 aEnhanced onepot selective conversion of cellulose to ethylene gl  cOCT  a19244-192540 v453 aThe mesopores interconnected with microporous NaZSM-5 was synthesised by sol-gel method. Reactions involving cellulose using different bimetallic and trimetallic combinations of nickel, aluminium, and tungsten metals supported on NaZSM-5 have been carried out. Different weight percentages (wt%) of Al, Ni, and W were loaded onto the NaZSM-5 support via a wet impregnation method. The prepared catalysts were characterized using PXRD, FE-SEM, HR-TEM, BET, and XPS studies to investigate the presence of mesopores, the textural properties, the metal loading, and the active oxidation states. The catalytic activities of the xAl-yNi-zW/NaZSM-5 (where x, y, and z are the wt% values of Al, Ni, and W, respectively) supported catalysts were studied during the one-pot conversion of cellulose into ethylene glycol at 220 degrees C and with a pressure of 70 bar H-2 (at the reaction temperature) in water (as a solvent). The 5%Al-8%Ni-25%W/NaZSM-5 catalyst exhibited the highest cellulose conversion of 100%, with an ethylene glycol yield as high as 89% (C mol%) under moderate reaction conditions being reported for the first time. Al3+ in the catalyst hydrolyzed cellulose, and W5+ species acted as acid centres that facilitated the retro-aldol condensation reaction and eventually led to an increased EG yield in the presence of Ni. The catalyst was moderately stable after four consecutive runs for 6 h at 220 degrees C and at a H-2 reaction pressure of 70 bar, though a 12 h reaction resulted in the highest EG yield. The high yields under moderate reaction conditions promise an energy-efficient and economically feasible process.1 aSreekantan, Sreejith1 aKirali, Arun, Arunima1 aMarimuthu, Banu  uhttps://library.ncl.res.in/content/enhanced-one-pot-selective-conversion-cellulose-ethylene-glycol-over-nazsm-5-supported-metal02107nas a2200193   4500008004100000022001400041245011800055210006900173260000900242300001400251490000700265520137900272100002901651700002601680700003301706700002201739700002001761856013201781       2024                        eng d  a0887-062400aEnhanced catalytic conversion of disaccharides to propylene glycol using metal-supported graphitic carbon nitride0 aEnhanced catalytic conversion of disaccharides to propylene glyc  cMAR   a7005-70170 v383 a<p>
	Propylene glycol (or) 1,2-propanediol (1,2-PD) is an important polyol widely used for pharmaceuticals, polyester resins, paints, cosmetics, antifreeze, etc. Sucrose has emerged as a promising feedstock to produce 1,2-PD, as indicated by recent research findings. Graphitic carbon nitride (g-C3N4/gCN) was synthesized by using different crucibles. Ni-Mo was loaded on different g-C3N4 supports via the wetness impregnation method for sucrose hydrogenolysis. Effects of different g-C3N4 supports were studied. Catalysts with varying Ni (x = 0-8 wt %) and Mo (y = 0-15 wt %) contents were characterized using XRD, BET, XPS, FE-SEM, Py-FTIR, HR-TEM, TPD (CO2)and Raman spectroscopy. An attempt was made on sucrose conversion into 1,2-PD using a Ni-Mo/g-C3N4 catalyst. The catalyst containing 8% Ni and 10% Mo on Gr-gCN exhibited the best performance, achieving complete sucrose conversion with a 76% yield of 1,2-PD under mild reaction conditions. The presence of highly dispersed nanoparticles and the nature of graphitic carbon nitride help improve the reactions' yield by allowing reactions at lower temperatures, reducing the occurrence of side reactions, and increasing recycling rates. A straightforward approach to material preparation, coupled with the exceptional dispersion of metal nanoparticles, paves the way for a novel platform for biomass conversion.</p>
1 aKirali, Arun, Arunima Ba1 aNarayanan, Hariprasad1 aViswanathan, Balasubramanian1 aYadav, Parmeshwar1 aMarimuthu, Banu  uhttps://library.ncl.res.in/content/enhanced-catalytic-conversion-disaccharides-propylene-glycol-using-metal-supported-graphitic