Stabilities of structures related to the high-pressure form of germanium phosphide, which may be derived from rock salt by bond breaking

1982 ◽  
Vol 21 (4) ◽  
pp. 1434-1437 ◽  
Author(s):  
Joseph H. Bularzik ◽  
Jeremy K. Burdett ◽  
Timothy J. McLarnan
Keyword(s):  
High Pressure ◽  
Rock Salt ◽  
Bond Breaking ◽  
Pressure Form

Crystal and powder XRD data of Mg3(PO4)2-III: High-temperature and high-pressure form

1995 ◽  
Vol 10 (4) ◽  
pp. 293-295 ◽  
Author(s):  
F. Brunet ◽  
C. Chopin ◽  
A. Elfakir ◽  
M. Quarton
Keyword(s):  
Crystal Structure ◽  
High Pressure ◽  
High Temperature ◽  
Single Crystal ◽  
Diffraction Pattern ◽  
Structure Refinement ◽  
Powder Xrd ◽  
Single Crystal Structure ◽  
Crystal Structure Refinement ◽  
Pressure Form

A new diffraction pattern of the high-temperature and high-pressure polymorph Mg3(PO4)2-III (PDF 43-500) is given and indexed on the basis of a single-crystal structure refinement. It allows diffractogram indexing of the isostructural high-temperature and high-pressure form of Co3(PO4)2 (PDF 43-499).

H-Bond Breaking in High-Pressure Urea

2009 ◽  
Vol 113 (35) ◽  
pp. 15761-15767 ◽  
Author(s):  
Anna Olejniczak ◽  
Kinga Ostrowska ◽  
Andrzej Katrusiak
Keyword(s):  
High Pressure ◽  
Bond Breaking

High-Resolution Electron Microscopy Studies of Faults and Intergrowth in Nb3O7F

1990 ◽  
Vol 183 ◽  
Author(s):  
Lotta permér ◽  
Monica Lundberg
Keyword(s):  
Electron Microscopy ◽  
Thermal Decomposition ◽  
High Pressure ◽  
High Resolution Electron Microscopy ◽  
Two Dimensions ◽  
Resolution Electron ◽  
Shear Type ◽  
Pressure Form ◽  
The Common ◽  
Shear Planes

AbstractHREM studies of the low-pressure form of Nb3O7F, obtained by thermal decomposition of NbO2F or by reacting stoichiometric amounts of NbO2F and Nb2O5, confirmed that the crystals are built up of a shear-type structure in which slabs of ReO3 type, infinite in two dimensions and three octahedra wide, separate the shear planes. Most of the crystals were well-ordered, although faults could occasionally be detected. However, some crystals were found to be intergrown with a structure closely related to the high-pressure form of Nb3O7F. The latter structure is composed of wavy rows of edge-sharing NbX7 pentagonal bipyramids, joined to each other by NbX6 octahedra. The connection between the two atomic arrangements can be understood in terms of the common c-axes and a slight distortion of the polyhedra along the boundary.

scholarly journals Cutting Niches in Rock Salt by Means of a High-Pressure Water Jet in Order to Accelerate the Leaching of Storage Caverns for Hydrogen or Hydrocarbons

Energies ◽  
2020 ◽  
Vol 13 (8) ◽  
pp. 1911 ◽  
Author(s):  
Waldemar Korzeniowski ◽  
Katarzyna Poborska-Młynarska ◽  
Krzysztof Skrzypkowski ◽  
Krzysztof Zagórski ◽  
Mariusz Chromik
Keyword(s):  
High Pressure ◽  
Rock Salt ◽  
Water Jet ◽  
Innovative Technology ◽  
Test Results ◽  
Significant Relationships ◽  
Rate Of Increase ◽  
Pressure Water ◽  
Preparatory Stage ◽  
High Pressure Water Jet

The article explores the potential for modification of the well-known salt cavern leaching process for brine production or/and hydrocarbon or hydrogen storage facilities, enabling the acceleration of the pace of acquiring new storage capacities with their increased geomechanical stability. The innovative technology is based on the use of high-pressure water jet technique for disc niche cutting in salt rock. The effect of such operations is a significant increase in the contact area of the water with the rock during cavern leaching and faster concentrated brine recovery already in the first leaching phase. This aspect was tested in 67 tests performed for three different types of rock salt: green, pink, and Spiza salt. Laboratory tests of the successive cutting of niches with a stream of water at 500 bar were carried out. The effectiveness of water jet was demonstrated and the possibilities of effective cutting of niches. Significant relationships were found between the obtained depth of niches at a given stream pressure and the duration of individual operations. Depending on the type of salt, the rate of increase in their depth was determined. The presented test results precede the much larger upscaling project, currently at the preparatory stage.

scholarly journals High-pressure formation of MgxZn1−xO solid solutions with rock salt structure

2006 ◽  
Vol 138 (10-11) ◽  
pp. 534-537 ◽  
Author(s):  
Vladimir L. Solozhenko ◽  
Andrey N. Baranov ◽  
Vladimir Z. Turkevich
Keyword(s):  
High Pressure ◽  
Solid Solutions ◽  
Rock Salt ◽  
Rock Salt Structure ◽  
Salt Structure
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