01748nas a2200229   4500008004100000022001400041245009000055210006900145260000800214300001100222490000800233520095400241653003001195653002801225653003201253653002301285653002401308100001901332700002701351700002201378856011801400       2020                        eng d  a2468-823100aEfficacy of octahedral molecular sieves for green and sustainable catalytic reactions0 aEfficacy of octahedral molecular sieves for green and sustainabl  cJUL  a1109660 v4903 a<p>Sustainability and Green Chemistry has emerged as catchphrase in modern era and researchers worldwide have embraced it as new paradigm of development. In this context identifying potential materials able to curb multiple grave issues thus contributing towards sustainability is vital. Catalytic materials are quite potent for addressing current social, economic and environmental problems like harnessing alternative energy source, pollution prevention/remediation and manufacturing of commodity chemicals. Thus, the present review accentuates the efficacy of porous octahedral molecular sieves (OMS) as catalyst for such environmentally important reactions. It discusses about structural importance of OMS and their applications for green and sustainable catalytic reactions. Finally, the limitations are highlighted and future perspectives are presented which will ameliorate its catalytic utilization in energy and environmental domains.</p>
10acatalytic transformations10aLignocellulosic biomass10aoctahedral molecular sieves10aplatform chemicals10arenewable feedstock1 aLucas, Nishita1 aGurrala, Lakshmiprasad1 aHalligudi, S., B.  uhttps://library.ncl.res.in/content/efficacy-octahedral-molecular-sieves-green-and-sustainable-catalytic-reactions02316nas a2200229   4500008004100000022001400041245006900055210006700124260000800191300001400199490000600213520159900219653001301818653001901831653003201850653001701882653001601899100001901915700002901934700002601963856009701989       2021                        eng d  a2365-654900aActive K-OMS-2 supported catalyst for hydrogenolysis of glycerol0 aActive KOMS2 supported catalyst for hydrogenolysis of glycerol  cSEP  a8700-87080 v63 aPropanediols are very important chemical intermediates, which need to be prepared through commercially viable routes. Cryptomelane type octahedral molecular sieve-2 (K-OMS-2), a cheap and environmentally benign microporous oxide was employed to support Ru and used as a catalyst to get 1,2-propanediol (1,2-PDO) selectively through hydrogenolysis of glycerol. Three catalysts with different Ru content were prepared and evaluated for glycerol hydrogenolysis. Among these, 1 wt.% Ru-K-OMS-2 showed reasonably good activity towards 1,2-PDO formation under moderate reaction conditions even at lower Ru loading (0.9 wt.%). When other metals such as Cu and Ni were supported on K-OMS-2, their performance was inferior compared to Ru-supported catalysts. All the catalysts were characterized using various physicochemical techniques like XRD, N-2-sorption, TPD, H-2-TPR, TGA, ICP-OES, FE-SEM and TEM. The enhanced catalytic activity with the 1 wt.%Ru-K-OMS-2 catalyst was attributed to the better Ru metal dispersion, higher active metal surface area, basic strength, and porosity of the support. The catalyst was found to be recyclable. Analysis of spent catalyst by TEM showed disintegration of Ru nanoparticles to smaller ones, under high H-2 pressure at the reaction temperature. Smaller Ru particles are expected to promote C-C bond cleavage thus suppressing 1,2-PDO formation. Furthermore, a relationship between the TOF value, Ru nanoparticles size, and the basic strength of the catalysts was established, which provides dipper insight into the different catalytic behavior of the catalysts.10aGlycerol10aHydrogenolysis10aoctahedral molecular sieves10aPropanediols10aselectivity1 aGogoi, Pranjal1 aChilukuri, Satyanarayana1 aThirumalaiswamy, Raja  uhttps://library.ncl.res.in/content/active-k-oms-2-supported-catalyst-hydrogenolysis-glycerol