Results 251 to 260 of about 88,883 (302)

Clathrate Hydrates for Production of Potable Water

MRS Proceedings, 2006
ABSTRACTClathrate hydrates are crystalline inclusion compounds of water and a guest molecule (e.g., methane) that form at temperatures below ambient but above the freezing point of water. There are three known crystalline structures of hydrates (structure I, II, and H) in which cavities within the hydrogen bonded water molecule lattice trap the hydrate-
Bradshaw, Robert W., Simmons, Blake A., Majzoub, Eric H., Clift, W. Miles, Dedrick, Daniel E.   +4 more
openaire   +2 more sources

Hydrate Mitigation in a Deepwater Production System

SPE Offshore Europe, 1989
Abstract Deepwater developments such as the one depicted in Fig 1 rely on production flowlines to carry raw, unprocessed reservoir fluid, called full wellstream (FWS) production, from wells to production facilities. As the search for reserves has taken the petroleum industry into deeper water and colder environments, the feasibility of ...
S.R. SETLIFF, G.M. PARFITT, T.S. CHILTON
openaire   +1 more source

Hydration products of calcium aluminoferrite

Cement and Concrete Research, 1983
Abstract Hydration products of Ca2AlFeO5, steam cured at 72 C, have been identified using X-ray diffraction and Mossbauer spectroscopy. Iron-bearing phases are hydrogarnet Ca3FeyAl2−y(OH)12 with y = 0.22, and non-crystalline ferrihydrite Fe(OH)3.nH2O.
J.M. Fortune, J.M.D. Coey
openaire   +1 more source

Hydrated Electron: Production and Role in Photobiology

Science, 1963
Many inorganic anions in aqueous solution either yield the hydrated electron on photolysis or they are strong scavengers. In neutral solution the hydrated electron is a primary photochemical product of aromatic amino acids.
G W, Swenson, E F, Zwicker, L I, Grossweiner   +2 more
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Metakaolin—lime hydration products

Thermochimica Acta, 1984
Abstract Four mixtures were prepared of weight ratios 80:20, 70:30, 60:40 and 50:50 of china kaolin/pure Ca(OH) 2 . Each mix was activated for 2 h at 800°C and then paste hydrated at room temperature and 100% RH for up to 28 days. The hydration products were studied by XRD as well as DTA and TG techniques.
M.A. Serry, A.S. Taha, S.A.S. El-Hemaly, H. El-Didamony   +3 more
openaire   +1 more source

Infrared characterization of hydrated products of glyoxal in aqueous solution

Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, 2023
The simplest and most abundant dicarbonyl in the atmosphere, glyoxal ((CHO)2), and its geminal diols via stepwise hydration reactions, monohydrate (CHOCH(OH)2) and dihydrate ((HC(OH)2)2), are proposed to be responsible for the generation of atmospheric acid and the increase in aerosol viscosity.
Pei-Rong Chen, Li-Kang Chu
openaire   +2 more sources

Early hydration of tricalcium silicate I. Kinetics of the hydration process and the stoichiometry of the hydration products

Cement and Concrete Research, 1979
Abstract The initial hydration of C3S in paste form at room temperature was studied. The process is initiated by a short lasting rapid hydration in which about 1 – 2% of C3S is hydrated and a hydrate with low C/S and high H/S ratio is formed. After a subsequent induction period of 4 hours a renewed rapid hydration is observed in which a hydrate of ...
I. Odler, H. Dörr
openaire   +1 more source

Hydration of Nitrosylruthenium Bis(alkynyl) Complexes with Hydrotris(pyrazolyl)borate:  Insertion/Hydration and Double Hydration Products

Journal of the American Chemical Society, 2004
Hydration of nitrosylruthenium bis(alkynyl) complex TpRu(CCPh)2(NO) (1) (Tp = BH(pyrazol-1-yl)3) was carried out in the presence of HBF4.Et2O in distilled MeOH and afforded the metallacycle TpRu{CH=C(Ph)C(O)CH(Ph)}(NO) (2) (39%) and the bis(ketonyl) TpRu(CH2C(O)Ph)2(NO) (3) (37%). While double hydration of 1 gave 3, 2 was produced through a combination
Yasuhiro, Arikawa, Yoshimasa, Nishimura, Kenta, Ikeda, Masayoshi, Onishi   +3 more
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PRODUCTION OF HYDRATED ELECTRONS

Canadian Journal of Chemistry, 1966
not available
openaire   +1 more source

THE HYDRATION OF THE ALUMINATES OF CALCIUM.: II. THE HYDRATION PRODUCTS OF TRICALCIUM ALUMINATE

Canadian Journal of Research, 1929
Further studies on the isometric form of hydrated tricalcium aluminate are reported. These include methods of preparation, crystalline forms, X-ray diffraction pattern, and determinations of solubility and density. The products formed when the hexagonal form of hydrated tricalcium aluminate is dehydrated at definite vapor pressures of Water at 21 °C.,
T. Thorvaldson, N. S. Grace, V. A. Vigfusson   +2 more
openaire   +1 more source