Composition and Structural Characteristics of Heavy Distillate from Xinjiang High Temperature Coal Tar

2021 ◽  
Author(s):  
Xian-Jin Huang ◽  
Wen-Long Mo ◽  
Xian-Yong Wei ◽  
Xing-Shun Cong ◽  
Zi-Fan Wu ◽  
...  
Keyword(s):  
High Temperature ◽  
Structural Characteristics ◽  
Coal Tar ◽  
Heavy Distillate

The high-pressure cadmium borate Cd6B22O39·H2O

2015 ◽  
Vol 70 (3) ◽  
pp. 183-190 ◽  
Author(s):  
Gerhard Sohr ◽  
Nina Ciaghi ◽  
Klaus Wurst ◽  
Hubert Huppertz
Keyword(s):  
High Pressure ◽  
High Temperature ◽  
Structural Characteristics ◽  
X Ray Diffraction ◽  
X Ray ◽  
High Pressure High Temperature ◽  
Cell Dimensions ◽  
Temperature Experiment ◽  
Unit Cell Dimensions ◽  
Ir And Raman

AbstractSingle crystals of the hydrous cadmium borate Cd6B22O39·H2O were obtained through a high-pressure/high-temperature experiment at 4.7 GPa and 1000 °C using a Walker-type multianvil apparatus. CdO and partially hydrolyzed B2O3 were used as starting materials. A single crystal X-ray diffraction study has revealed that the structure of Cd6B22O39·H2O is similar to that of the type M6B22O39·H2O (M=Fe, Co). Layers of corner-sharing BO4 groups are interconnected by BO3 groups to form channels containing the metal cations, which are six- and eight-fold coordinated by oxygen atoms. The compound crystallizes in the space group Pnma (no. 62) [R1=0.0379, wR2=0.0552 (all data)] with the unit cell dimensions a=1837.79(5), b=777.92(2), c=819.08(3) pm, and V=1171.00(6) Å3. The IR and Raman spectra reflect the structural characteristics of Cd6B22O39·H2O.

scholarly journals Deep melting reveals liquid structural memory and anomalous ferromagnetism in bismuth

2017 ◽  
Vol 114 (13) ◽  
pp. 3375-3380 ◽  
Author(s):  
Yu Shu ◽  
Dongli Yu ◽  
Wentao Hu ◽  
Yanbin Wang ◽  
Guoyin Shen ◽  
...  
Keyword(s):  
High Temperature ◽  
Low Temperature ◽  
Electrical Resistance ◽  
Structural Characteristics ◽  
Critical Role ◽  
Melting Curve ◽  
Molten State ◽  
Pressure Independent ◽  
Temperature Liquid ◽  
Structural Memory

As an archetypal semimetal with complex and anisotropic Fermi surface and unusual electric properties (e.g., high electrical resistance, large magnetoresistance, and giant Hall effect), bismuth (Bi) has played a critical role in metal physics. In general, Bi displays diamagnetism with a high volumetric susceptibility (∼10−4). Here, we report unusual ferromagnetism in bulk Bi samples recovered from a molten state at pressures of 1.4–2.5 GPa and temperatures above ∼1,250 K. The ferromagnetism is associated with a surprising structural memory effect in the molten state. On heating, low-temperature Bi liquid (L) transforms to a more randomly disordered high-temperature liquid (L′) around 1,250 K. By cooling from above 1,250 K, certain structural characteristics of liquid L′ are preserved in L. Bi clusters with characteristics of the liquid L′ motifs are further preserved through solidification into the Bi-II phase across the pressure-independent melting curve, which may be responsible for the observed ferromagnetism.

Analysis of pyridine bases isolated from a high-temperature coal tar by capillary gas chromatography

1981 ◽  
Vol 209 (3) ◽  
pp. 472-475 ◽  
Author(s):  
Jiří Macák ◽  
Valentin Michailovich Nabivach ◽  
Petr Buryan ◽  
Jurij Sergejevich Berlizov
Keyword(s):  
Gas Chromatography ◽  
High Temperature ◽  
Capillary Gas Chromatography ◽  
Coal Tar ◽  
Pyridine Bases

Solid state 13C NMR and high temperature 1H NMR determination of bulk structural properties for mesophase-containing semi-cokes prepared from coal tar pitch

Carbon ◽  
1998 ◽  
Vol 36 (7-8) ◽  
pp. 1043-1050 ◽  
Author(s):  
J.M. Andrésen ◽  
Y. Martín ◽  
S.R. Moinelo ◽  
M.M. Maroto-Valer ◽  
C.E. Snape
Keyword(s):  
High Temperature ◽  
Solid State ◽  
Structural Properties ◽  
1H Nmr ◽  
13C Nmr ◽  
Coal Tar ◽  
Coal Tar Pitch ◽  
Solid State 13C Nmr

VI. Researches on the colouring matters derived from coal-tar.— II. On aniline-blue

1864 ◽  
Vol 13 ◽  
pp. 9-14 ◽  
Keyword(s):  
High Temperature ◽  
Organic Acids ◽  
Industrial Production ◽  
Coal Tar ◽  
Aniline Blue ◽  
Benzoic Acids ◽  
First Time ◽  
Great Simplicity

Among the several stages which mark the development of the industry of coal-tar colours, the discovery of the transformation of aniliue-red into aniline-blue will always hold a prominent position. This transition, for the first time observed by MM. Girard and De Laire, two young French chemists of M. Pelouze’s Laboratory, and subsequently matured by M. Persoz, De Laynes, and Salvetat, has become the foundation of an enormous industrial production, which, having received a powerful impulse by MM. Renard Brothers and Franc in France, and more recently by Messrs. Simpson, Maule, and Nicholson in this country, has rapidly attained to proportions of colossal magnitude. The transformation of aniline-red into aniline-blue is accomplished by a process of great simplicity, and consists, briefly expressed, in the treatment at a high temperature of rosaniline with an excess of aniline. The mode of this treatment is by no means indifferent. Rosaniline itself cannot in this manner conveniently be converted into the blue colouring matter; the transformation is, however, easily accomplished by heating rosaniline salts with aniline, or, vice versâ , rosaniline with salts of aniline. Again, the nature of the acids with which the bases are combined is by no means without influence upon the result of the operation; manufacturers give a decided preference to organic acids, such as acetic or benzoic acids.

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