02055nas a2200241   4500008004100000022001400041245004200055210004200097260010200139300001400241490000800255520129300263653002001556653002401576653000901600653001901609653001701628653002501645100001801670700001901688700003201707856007401739       2016                        eng d  a0011-389100aVarious types of separation membranes0 aVarious types of separation membranes  aC V RAMAN AVENUE, SADASHIVANAGAR, P B \#8005, BANGALORE 560 080, INDIAbINDIAN ACAD SCIENCEScAPR  a1426-14380 v1103 a<p>Membrane-based separation is a superior alternative to conventional processes in many separation problems of practical importance. For maximum effectiveness, both high selectivity and flux are desirable. This article summarizes the global efforts at designing new membrane materials, particularly carbon nanotube (CNT)-based membranes, to achieve the twin objectives mentioned above. Interest in CNT emanates from the excellent transport property of molecules through its frictionless smooth walls, with/without functionalization at the end tips. Permeation of water through graphene oxide (GO) channels, which are otherwise impermeable to solutes, has also generated considerable interest, and GO is being viewed as a promising material for separations. The performances of conducting polymers like polypyrrole, polyaniline, polythiophene-3, 4-ethylenedioxythiophene and their different composites have been studied as a function of changes in morphology and redox behaviour, and this aspect too is covered in the present article. Also, the dependence of the separation performances based on the size, charge and hydrophobic/hydrophilic properties has been discussed in detail. Advances in understanding will have an important bearing on future developments in separation science.</p>10acarbon nanotube10aconducting polymers10aflux10agraphene oxide10apermeability10aseparation membranes1 aDas, Debasree1 aDatta, Anindya1 aContractor, Aliasgar, Qutub  uhttps://library.ncl.res.in/content/various-types-separation-membranes02607nas a2200277   4500008004100000022001400041245017500055210006900230260007500299300001400374490000700388520154500395653002001940653001901960653002101979653002802000653002902028100001502057700001902072700002002091700002102111700001802132700002202150700002702172856013002199       2016                        eng d  a0947-653900aVersatile Cu-II metal-organic framework exhibiting high gas storage capacity with selectivity for CO2: conversion of CO2 to cyclic carbonate and other catalytic abilities0 aVersatile CuII metalorganic framework exhibiting high gas storag  aPOSTFACH 101161, 69451 WEINHEIM, GERMANYbWILEY-V C H VERLAG GMBHcMAR  a3387-33960 v223 a<p>A linear tetracarboxylic acid ligand, H4L, with a pendent amine moiety solvothermally forms two isostructural metal-organic frameworks (MOFs) L-M (M=Zn-II, Cu-II). Framework L-Cu can also be obtained from L-Zn by post- synthetic metathesis without losing crystallinity. Compared with L-Zn, the L-Cu framework exhibits high thermal stability and allows removal of guest solvent and metal-bound water molecules to afford the highly porous, L-Cu. At 77K, L-Cu absorbs 2.57wt% of H-2 at 1bar, which increases significantly to 4.67wt% at 36bar. The framework absorbs substantially high amounts of methane (238.38cm(3)g(-1), 17.03wt%) at 303K and 60bar. The CH4 absorption at 303K gives a total volumetric capacity of 166cm(3)(STP)cm(-3) at 35bar (223.25cm(3)g(-1), 15.95wt%). Interestingly, the NH2 groups in the linker, which decorate the channel surface, allow a remarkable 39.0wt% of CO2 to be absorbed at 1bar and 273K, which comes within the dominion of the most famous MOFs for CO2 absorption. Also, L-Cu shows pronounced selectivity for CO2 absorption over CH4, N-2, and H-2 at 273K. The absorbed CO2 can be converted to value-added cyclic carbonates under relatively mild reaction conditions (20bar, 120 degrees C). Finally, L-Cu is found to be an excellent heterogeneous catalyst in regioselective 1,3-dipolar cycloaddition reactions (click reactions) and provides an efficient, economic route for the one-pot synthesis of structurally divergent propargylamines through three-component coupling of alkynes, amines, and aldehydes.</p>10aclick reactions10aCO2 absorption10acyclic carbonate10aheterogeneous catalysis10ametal-organic frameworks1 aDe, Dinesh1 aPal, Tapan, K.1 aNeogi, Subhadip1 aSenthilkumar, S.1 aDas, Debasree1 aGupta, Sayam, Sen1 aBharadwaj, Parimal, K.  uhttps://library.ncl.res.in/content/versatile-cu-ii-metal-organic-framework-exhibiting-high-gas-storage-capacity-selectivity-0