The recovery of CH4 gas from natural hydrate formations by injection of industrially emitted CO2 is considered to be a promising solution to simultaneously access an unconventional fossil fuel reserve and counteract atmospheric CO2 increase. CO2 obtained from industrial processes may contain traces of impurities such as SO2 or NOx and natural gas hydrates may contain higher hydrocarbons such as...

Methods of efficiently optimizing the orbitals of generalized valence bond (GVB) wavefunctions are discussed and applied to LiH, BH, H3, H,O, C6Hs, and o,. The strong orthogonality and perfect pairing restrictions are tested for the X 1::!:+ state of LiH, the X 1::!:+, a 3II, and A 1II states of BH, and the H2+ D;::::: H + HD exchange reaction. The orbitals of H,O and C2H6 naturally localize in...

Reactions of neutral vanadium oxide clusters with small hydrocarbons, namely C2H6, C2H4, and C2H2, are investigated by experiment and density functional theory (DFT) calculations. Single photon ionization through extreme ultraviolet (EUV, 46.9 nm, 26.5 eV) and vacuum ultraviolet (VUV, 118 nm, 10.5 eV) lasers is used to detect neutral cluster distributions and reaction products. The most stable ...

The Time Projection Chamber (TPC) has been recognized as a potentially powerful detector for the search of WIMPs by measuring the directions of nuclear recoils, in which the most convincing signature of WIMPs, caused by the Earth’s motion around the Galaxy, appears. We report on the first results of a performance study of the neutron exposure of our prototype micro-TPC with Ar-C2H6 (90:10) and ...

We are developing a new photon detector with micro pattern gaseous detectors. A semitransparent CsI photocathode is combined with 10cm×10cm GEM/μPIC for the first prototype which is aimed for the large liquid Xe detectors. Using Ar+C2H6 (10%) gas, we achieved the gas gain of 10 which is enough to detect single photoelectron. We, then, irradiated UV photons from a newly developed solid scintilla...

Matrix isolation IR spectroscopy has been used to study the vacuum pyrolysis of hexamethylcyclotrisiloxane (D3), octamethylcyclotetrasiloxane (D4) and decamethyl cyclopentasiloxane (D5), and the results interpreted in the context of various kinetic models. In particular, it is shown that the significant pyrolysis products--which include CH3, CH4, C2H2, C2H4, C2H6 and SiO--may be satisfactorily ...

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The absolute absorption cross-section of the ethyl peroxy radical C2H5O2 in Ã←X˜ electronic transition with peak wavelength at 7596 cm−1 has been determined by method dual wavelengths time resolved continuous wave cavity ring down spectroscopy. radicals were generated from pulsed 351 nm photolysis C2H6/Cl2 mixture presence 100 Torr O2 T = 295 K. detected on one CRDS paths. Two methods have appl...

In this study, we report a novel hydrate former that acts as structure II (sII) and thermodynamic inhibitor. Thiazole is an aromatic five-ringed molecule with two heteroatoms. forms sII crystal small CH4 CO2 molecules. The Rietveld refinement result of (CH4 + thiazole) positions the thiazole off center 51264 cages, S N atoms face O at apex pentagonal faces one hexagonal cage, respectively. Cons...