02186nas a2200241   4500008004100000022001400041245009100055210006900146260009900215300001200314490000800326520131600334653001501650653001701665653002201682653002101704653001401725653002101739100002901760700001901789700001901808856011701827       2014                        eng d  a0306-261900aHydrogen storage in clathrate hydrates: Current state of the art and future directions0 aHydrogen storage in clathrate hydrates Current state of the art   aTHE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLANDbELSEVIER SCI LTDcJUN  a112-1320 v1223 a<p>Hydrogen is looked upon as the next generation clean energy carrier, search for an efficient material and method for storing hydrogen has been pursued relentlessly. Improving hydrogen storage capacity to meet DOE targets has been challenging and research efforts are continuously put forth to achieve the set targets and to make hydrogen storage a commercially realizable process. This review comprehensively summarizes the state of the art experimental work conducted on the storage of hydrogen as hydrogen clathrates both at the molecular level and macroscopic level. It identifies future directions and challenges for this exciting area of research. Hydrogen storage capacities of different clathrate structures - sI, sII, sH, sVI and semi clathrates have been compiled and presented. In addition, promising new approaches for increasing hydrogen storage capacity have been described. Future directions for achieving increased hydrogen storage and process scale up have been outlined. Despite few limitations in storing hydrogen in the form of clathrates, this domain receives prominent attention due to more environmental-friendly method of synthesis, easy recovery of molecular hydrogen with minimum energy requirement, and improved safety of the process. (C) 2014 Elsevier Ltd. All rights reserved.</p>10aClathrates10aGas hydrates10aHydrogen hydrates10aHydrogen storage10aPromoters10aStorage capacity1 aVeluswamy, Hari, Prakash1 aKumar, Rajnish1 aLinga, Praveen  uhttps://library.ncl.res.in/content/hydrogen-storage-clathrate-hydrates-current-state-art-and-future-directions-0