scholarly journals Ethyl alcohol, a product of high pressure syntheses

1931 ◽  
Vol 131 (818) ◽  
pp. 533-540 ◽  
Keyword(s):  
High Pressure ◽  
Ethyl Alcohol ◽  
Personal Experience ◽  
High Pressures ◽  
Catalytic Reactions ◽  
Chemical Research ◽  
Chemical Research Laboratory ◽  
Pressure Synthesis ◽  
Corroborative Evidence ◽  
Made In

In opening the “discussion on catalytic reactions at high pressures,” one of us (G. T. M.) referred to experiments made in the Chemical Research Laboratory of the Department of Scientific and Industrial Research which had led to the isolation of notable quantities of ethyl alcohol among the condensation products from carbon monoxide and hydrogen interacting at high temperatures and pressures in presence of catalysts. These experiments were first described in March, 1928, and since that date statements have appeared in the scientific press to the effect that ethyl alcohol is a possible exception to the whole sequence of higher alcohols which can be produced by such interactions. Moreover during the above-mentioned discussion Mr. M. P. Appleby, speaking on behalf of the Imperial Chemical Industries, Ltd., Billingham, said “that in our experience we have never succeeded in obtaining, with any catalyst whatsoever, more than a mere trace of ethyl alcohol.” To the latter statement we take no exception whatever. It is a record of personal experience. But we felt that it was desirable to substantiate our earlier experiments by such corroborative evidence as would leave no doubt that ethyl alcohol is a product of high pressure synthesis.

scholarly journals Hochdrucksynthese quaternärer Chalkogenidhalogenide AB2X3Y (A = Cu, Ag; B = In; X = S, Se, Te; Y = Cl, Br, I)/High Pressure Synthesis of Quaternary Chalcogenide Halogenides AB2X3Y (A = Cu, Ag; B = In; X = S, Se, Te; Y = Cl, Br, I)

1983 ◽  
Vol 38 (2) ◽  
pp. 155-160 ◽  
Author(s):  
Klaus-Jürgen Range ◽  
Heinz-Joachim Hübner
Keyword(s):  
High Pressure ◽  
Crystal Structures ◽  
Spinel Structure ◽  
High Pressures ◽  
Reaction Pathways ◽  
High Pressure Synthesis ◽  
Quaternary Compounds ◽  
Pressure Synthesis ◽  
High Pressures And Temperatures

Abstract Quaternary compounds AB2X3Y (A = Cu, Ag; B = In; X = S, Se, Te; Y = Cl, Br, I) could be synthesized at high pressures and temperatures. The crystal structures found are defect-zincblende (AgIn2Se3I, AgIn2Te3l, CuIn2Se3Br, CuIn2Se3I, CuIn2Te3Cl, CuIn2Te3Br, CuInTe3I), spinel (AgIn2S3Cl, AgIn2S3Br, AgIn2Se3Cl, AgIn2Se3Br, AgIn2Se3l) and defect-rocksalt (AgIn2Te3Cl, AgIn2Te3Br). A second form of CuIn2Se3l is intermediate between the zincblende and spinel structure. A survey of the different reaction pathways of AB-B2X3 mixtures at high pressures and temperatures is given.

High Pressure Synthesis of RuSr2MeCu2O8 (Me = Ho or Y)

2000 ◽  
Vol 659 ◽  
Author(s):  
R. Ruiz-Bustos ◽  
J. M. Gallardo-Amores ◽  
E. Morán ◽  
J. P. Attfield ◽  
R. Sáez-Puche ◽  
...  
Keyword(s):  
High Pressure ◽  
Magnetic Properties ◽  
High Temperatures ◽  
High Pressures ◽  
Cell Parameters ◽  
Preliminary Results ◽  
High Pressure Synthesis ◽  
Lanthanide Contraction ◽  
Pressure Synthesis ◽  
Ferromagnetic Ordering

ABSTRACTThe synthesis at high pressures ( ∼60 Kbar) and high temperatures (∼1100 °C) of the title new ruthenates has been achieved and the materials compared to the gadolinium analogue. The structure remains tetragonal (S.G. P4/mmm) and the cell parameters linearly decrease following the lanthanide contraction. Preliminary results concerning the complex magnetic properties of these materials, where superconductivity, antiferromagnetism and a superimposed ferromagnetic ordering coexist, are presented.

scholarly journals Slow oxidations at high pressures I—Methane and ethane, II—Methyl alcohol, ethyl alcohol, acetaldehyde, and acetic acid

1934 ◽  
Vol 147 (862) ◽  
pp. 555-571 ◽  
Keyword(s):  
High Pressure ◽  
Acetic Acid ◽  
Optimum Condition ◽  
Ethyl Alcohol ◽  
Methyl Alcohol ◽  
High Pressures ◽  
Hydrocarbon Gases ◽  
Hydrocarbon Combustion ◽  
Liquid Products ◽  
Alcohol Ethyl

In two recent papers from these laboratories it was shown that when methane- and ethane-oxygen mixtures containing excess of the hydrocarbon react at high pressure various liquid products can be isolated. For methane-oxygen mixtures methyl alcohol and water are found, and for ethane-oxygen mixtures ethyl alcohol, acetaldehyde, methyl alcohol, acetic acid, formic acid, and water. These products being important for the light they throw on the mechanism of hydrocarbon combustion and because they suggest means for using waste hydrocarbon gases, further experiments have now been made with the object of finding the order of their formation and the optimum condition for their survival.

Synthesis and Crystal Structure of New Hydrides in Mg-RE Systems under High-Pressure (RE = La, Ce, Pr)

2005 ◽  
Vol 475-479 ◽  
pp. 2521-2526 ◽  
Author(s):  
Yasuyuki Goto ◽  
Hirofumi Kakuta ◽  
Atsunori Kamegawa ◽  
Hitoshi Takamura ◽  
Masuo Okada
Keyword(s):  
Crystal Structure ◽  
High Pressure ◽  
High Pressures ◽  
The Novel ◽  
Thermal Stabilities ◽  
Synthesis And Crystal Structure ◽  
Lattice Constants ◽  
Pressure Synthesis ◽  
Type Apparatus ◽  
Chemical Formulas

The high-pressure synthesis of new hydrides of Mg-RE-H systems, where RE = La, Ce and Pr, were conducted by using a cubic-anvil-type apparatus, and their crystal structure, thermal stabilities and hydrogen contents were investigated. In MgH2-xmol%REH (REH = LaH3, CeH2.5 and PrH3), new hydrides with primitive tetragonal structure were synthesized around x = 25 - 33 under GPa-order high pressures. The lattice constants were a = 0.8193 nm, c = 0.5028 nm, a = 0.8118 nm, c = 0.4979 nm and a = 0.8058 nm, c= 0.4970 nm at x = 25 in Mg-La, Ce and Pr systems, respectively. The hydrogen contents of the novel compounds were 4.1 mass%, 3.7 mass% and 3.9 mass% in Mg-La, Ce and Pr systems, respectively, and the chemical formulas were found to correspond to Mg3LaH9, Mg3CeH8.1 and Mg3PrH9. The new hydrides decomposed into Mg and rare-earth hydride at about 600 K (Mg3LaH9: 614 K, Mg3CeH8.1: 609 K, Mg3PrH9: 630 K) with an endothermic reaction.

Hochdrucksynthese und Kristallstruktur von Kalium- und Rubidiumdiwolframat(VI), K2W2O7 und Rb2W2O7 / High-Pressure Synthesis and Crystal Structure of Potassium and Rubidium Ditungstate(VI), K2W2O7 und Rb2W2O7

1990 ◽  
Vol 45 (2) ◽  
pp. 107-110 ◽  
Author(s):  
Klaus-Jürgen Range ◽  
Wilhelm Hegenbart ◽  
Anton M. Heyns ◽  
Franz Rau ◽  
Ulrich Klement
Keyword(s):  
Crystal Structure ◽  
High Pressure ◽  
Single Crystals ◽  
High Pressures ◽  
Monoclinic Space Group ◽  
Potassium Ions ◽  
Synthesis And Crystal Structure ◽  
Space Group ◽  
High Pressure Synthesis ◽  
Pressure Synthesis

Potassium tungstate, K2WO4, decomposes at high pressures to give K2W2O7 and other products. Single crystals of K2W2O7 could be synthesized from a mixture of K2WO4 + WO3 at 40kbar, 1000 °C. The crystals are monoclinic, space group P21/c, with a = 3.883(1) A, b = 13.653(4) Å, c = 5.960(1) Å, β = 90.40(3)°, and Ζ = 2.The structure is comprise of distorted WO6-octahedra (W–O = 1.75-2.13 A) which are connected by corner- and edgesharing, thus forming layers with a sequence ABAB ... along [010]. The potassium ions are situated between the layers with K–O distances of 2.66-3.04 A.Rb2W2O7, synthesized from a Rb2WO4/WO3-mixture at 40 kbar, 1000 °C, is isostructural with K2W2O7 (a = 3.9645(4) Å, b = 14.119(1) Å, c = 6.0415(5) Å,β = 90.446(9)°.

scholarly journals High-pressure synthesis of ε-FeOOH from β-FeOOH and its application to the water oxidation catalyst

RSC Advances ◽  
2020 ◽  
Vol 10 (73) ◽  
pp. 44756-44767
Author(s):  
Kazuhiko Mukai ◽  
Tomiko M. Suzuki ◽  
Takeshi Uyama ◽  
Takamasa Nonaka ◽  
Takeshi Morikawa ◽  
...  
Keyword(s):  
High Pressure ◽  
Water Oxidation ◽  
High Pressures ◽  
Functional Materials ◽  
Oxidation Catalyst ◽  
Extreme Conditions ◽  
High Pressure Synthesis ◽  
The Earth ◽  
Pressure Synthesis ◽  
Space Sciences

Research on materials under extreme conditions such as high pressures provides new insights into the evolution and dynamics of the earth and space sciences, but recently, this research has focused on applications as functional materials.

scholarly journals High-pressure synthesis and crystal structure of the mixed-cation borate Ga4In4B15O33(OH)3

2019 ◽  
Vol 74 (4) ◽  
pp. 357-363
Author(s):  
Daniela Vitzthum ◽  
Hubert Huppertz
Keyword(s):  
Crystal Structure ◽  
High Pressure ◽  
High Temperature ◽  
Diffraction Data ◽  
X Ray Diffraction ◽  
Synthesis And Crystal Structure ◽  
X Ray ◽  
Mixed Cation ◽  
High Pressure High Temperature ◽  
Pressure Synthesis

AbstractThe mixed cation triel borate Ga4In4B15O33(OH)3 was synthesized in a Walker-type multianvil apparatus at high-pressure/high-temperature conditions of 12.5 GPa and 1300°C. Although the product could not be reproduced in further experiments, its crystal structure could be reliably determined via single-crystal X-ray diffraction data. Ga4In4B15O33(OH)3 crystallizes in the tetragonal space group I41/a (origin choice 2) with the lattice parameters a = 11.382(2), c = 15.244(2) Å, and V = 1974.9(4) Å3. The structure of the quaternary triel borate consists of a complex network of BO4 tetrahedra, edge-sharing InO6 octahedra in dinuclear units, and very dense edge-sharing GaO6 octahedra in tetranuclear units.

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