Kinetics of H2–O2–H2O redox equilibria and formation of metastable H2O2 under low temperature hydrothermal conditions

The course of the conversion of methanol with water vapour was followed on a low-temperature Cu-Zn-Cr-Al catalyst at pressures of 0.2 and 0.6 MPa. The kinetic data were evaluated together with those obtained at 0.1 MPa and the following equation for the reaction kinetics at the given conditions was derived: r = [p(CH3OH)p(H2O)]0.5[p(H2)]-1.3.

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Kinetics of low-temperature chlorination of vanadium pentoxide by carbon tetrachloride vapor

Metallurgical and Materials Transactions B ◽

10.1007/s11663-005-0020-5 ◽

2005 ◽

Vol 36 (2) ◽

pp. 195-199 ◽

Cited By ~ 4

Author(s):

P. K. Jena ◽

E. A. Brocchi ◽

J. González

Keyword(s):

Carbon Tetrachloride ◽

Low Temperature ◽

Vanadium Pentoxide ◽

Kinetics Of

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Role of Surface Reconstruction and External Ion Beam in the Growth Kinetics of III-V Molecular Beam Epitaxy

MRS Proceedings ◽

10.1557/proc-94-83 ◽

1987 ◽

Vol 94 ◽

Cited By ~ 10

Author(s):

S. B. Ogale ◽

M. Thomsen ◽

A. Madhukar

Keyword(s):

Molecular Beam Epitaxy ◽

Low Temperature ◽

Surface Reconstruction ◽

Molecular Beam ◽

Ion Beam ◽

Growth Front ◽

Kinetic Rates ◽

Kinetics Of ◽

Low Temperature Epitaxy

ABSTRACTComputer simulations of III-V molecular beam epitaxy (MBE) show that surface reconstruction induced modulation of kinetic rates could give rise to ordering in alloys. Results are also presented for the possible influence of an external ion beam in achieving low temperature epitaxy as well as smoother growth front under usual conditions.

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Kinetics of ionization and recombination in low-temperature plasmas

Plasma Sources Science and Technology ◽

10.1088/0963-0252/4/2/001 ◽

1995 ◽

Vol 4 (2) ◽

pp. 163-171 ◽

Cited By ~ 4

Author(s):

V S Vorob'ev

Keyword(s):

Low Temperature ◽

Low Temperature Plasmas ◽

Kinetics Of

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Kinetic model for calcium sulfate α-hemihydrate produced hydrothermally from gypsum formed by flue gas desulfurization

Journal of Applied Crystallography ◽

10.1107/s1600576715007141 ◽

2015 ◽

Vol 48 (3) ◽

pp. 827-835 ◽

Cited By ~ 10

Author(s):

Mingliang Tang ◽

Xuerun Li ◽

Yusheng Shen ◽

Xiaodong Shen

Keyword(s):

Flue Gas ◽

Calcium Sulfate ◽

High Performance ◽

Transformation Process ◽

Flue Gas Desulfurization ◽

Synthesis Process ◽

Stable Phase ◽

Hydrothermal Conditions ◽

Simple Method ◽

Kinetics Of

Modeling of the kinetics of the synthesis process for calcium sulfate α-hemihydrate from gypsum formed by flue gas desulfurization (FGD) is important to produce high-performance products with minimal costs and production cycles under hydrothermal conditions. In this study, a model was established by horizontally translating the obtained crystal size distribution (CSD) to the CSD of the stable phase during the transformation process. A simple method was used to obtain the nucleation and growth rates. A nonlinear optimization algorithm method was employed to determine the kinetic parameters. The model can be successfully used to analyze the transformation kinetics of FGD gypsum to α-hemihydrate in an isothermal batch crystallizer. The results showed that the transformation temperature and stirring speed exhibit a significant influence on the crystal growth and nucleation rates of α-hemihydrate, thus altering the transformation time and CSD of the final products. The characteristics obtained by the proposed model can potentially be used in the production of α-hemihydrate.

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