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Search query: carbon dioxide sequestration
10 articles match your search "carbon dioxide sequestration"Results 1 to 10, sorted by relevance:
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This research uses contrast-matched small-angle neutron scattering to investigate the adsorption behaviour of deuterated methane in a silica aerogel in the pressure range from 0 to 1000 bar. The results reveal a classical reversible two-phase adsorption in the 2.5–50 nm pore size region and no evidence of condensation in the sub-nanometre pores.
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In order to investigate the viability of carbon dioxide (CO2) storage in seawater, molecular dynamics techniques were employed to study the dynamic evolution of CO2 hydrate in saline water.
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The crystal structure of SspCA, a novel `extremo-α-carbonic anhydrase', is described, providing an elucidation of the factors responsible for its function at high temperature.
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A new rig developed to study time-lapse deformation of solid samples using in situ microtomography (up to 250°C and 1000 bar) is described.
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The formation of a previously unknown higher hydrated magnesium carbonate, MgCO3·6H2O, was confirmed. Its crystal structure differs from the other known magnesium carbonates significantly, but it exhibits similarities to NiCO3·5.5H2O.
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The crystal structure of the title salt consists of infinite (100) sheets of alternating organic and inorganic entities The m-xylylenediaminium cations are linked to the sulfate anions by N—H
O and asymmetric bifurcated N—H
(O,O) hydrogen bonds, generating a three-dimensional network. The Hirshfeld surface analysis and the two-dimensional fingerprint maps indicate that the packing is dominated by H
O/O
H and H
H contacts.
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Recent developments in in situ synchrotron X-ray micro-computed tomography allow novel time-resolved experiments. Five different dynamic micro-computed tomography experiments addressing carbon sequestration, permafrost evolution and unconventional oil recovery topics are presented.
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The Protein Crystallography Station user facility at Los Alamos National Laboratory not only offers open access to a high-performance neutron beamline, but also actively supports and develops new methods in protein expression, deuteration, purification, robotic crystallization and the synthesis of substrates with stable isotopes and provides assistance with data-reduction and structure-refinement software and comprehensive neutron structure analysis.
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This article highlights scientific and technical contributions from the Protein Crystallography Station at Los Alamos, the first purpose-built macromolecular crystallography station at a spallation neutron source.
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Materials with applications in gas storage and separation are of enormous interest across many disciplines of science. This has been driven in large part by advances in carbon sequestration technologies in line with global government targets for cleaner energy and the reduction of carbon dioxide (CO2) emissions. Potential applications in this field include the removal of CO2 from flue gas mixtures before it enters the atmosphere, for example. Porous metal-organic frameworks (MOFs) are currently seen as one of the most promising types of materials for this purpose since they combine the desired features of high porosity, thermal stability and chemical versatility. Fundamental to such research is the requirement to optimise the quantity of gas that can be stored in the MOF. Evaluation of gas storage capacities is usually performed using time-consuming gravimetric or calorimetric analyses over a range of temperatures and pressures, and often requiring gram-scale quantites of material. Here, we present a novel method for gas delivery and calculation of gas storage capacity using a perflourocarbon (PFC) liquid. PFCs have long been recognised as useful due to their predisoposition for dissolving large volumes of gases such as CO2 and oxygen. They are chemically inert hydrocarbons in which the hydrogen atoms have been replaced with fluorine. We have used a PFC containing dissolved CO2 as a pressure-transmitting liquid in an in situ high-pressure single-crystal X-ray diffraction experiment. Application of industrially-achievable pressure within a diamond anvil cell causes the CO2 to be squeezed out of the liquid into a host crystal of a porous MOF as the system seeks to fill empty space and redistribute density upon contraction. Diffraction data from a crystal of Sc2BDC3 (BDC = 1,4-benzenedicarboxylate)[1] has allowed us to determine its maximum CO2 storage capacity, which is in perfect agreement with other methods. This result is the first of its kind and the technique has several notable advantages over other methods: it requires just one experimental step, can be performed at room temperature, and requires only one single crystal of solid material.