Mechanism and kinetics of methanol synthesis on zinc oxide

1981 ◽  
Vol 77 (12) ◽  
pp. 3023 ◽  
Author(s):  
Michael Bowker ◽  
Hilary Houghton ◽  
Kenneth C. Waugh
Keyword(s):  
Zinc Oxide ◽  
Methanol Synthesis ◽  
Mechanism And Kinetics ◽  
Kinetics Of

Kinetics of Methanol Synthesis from Carbon Dioxide Hydrogenation over Copper–Zinc Oxide Catalysts

2017 ◽  
Vol 56 (45) ◽  
pp. 13133-13145 ◽  
Author(s):  
Jean-François Portha ◽  
Ksenia Parkhomenko ◽  
Kilian Kobl ◽  
Anne-Cécile Roger ◽  
Sofiane Arab ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Zinc Oxide ◽  
Methanol Synthesis ◽  
Oxide Catalysts ◽  
Carbon Dioxide Hydrogenation ◽  
Copper Zinc ◽  
Copper Zinc Oxide ◽  
Kinetics Of

The Chemistry of Vulcanization. IV. Action of 2-Mercaptobenzothiazole on the Reaction of Diphenylmethane and Sulfur

1958 ◽  
Vol 31 (4) ◽  
pp. 779-787 ◽  
Author(s):  
Jitsuo Tsurugi ◽  
Takeshige Nakabayashi
Keyword(s):  
Organic Chemistry ◽  
Zinc Oxide ◽  
Kinetic Investigation ◽  
Double Bonds ◽  
Excellent Model ◽  
Mechanism And Kinetics ◽  
Kinetics Of ◽  
Mechanism Of The Reaction

Abstract In Part I of this series, the mechanism of the reaction of diphenylmethane (DPM) and sulfur was discussed, and in Part II, a kinetic investigation was carried out. In this paper, the mechanism and kinetics of the reaction involving DPM, sulfur and 2-mercaptobenzothiazole (MBT) will be reported and compared with those of Parts I and II, respectively. Thus the accelerating effect of MBT has been elucidated clearly. DPM which has no olefinic double bonds but which has α-methylenic hydrogen adjacent to aromatic double bonds has been shown to be an excellent model for studying the mechanism of acceleration by the methods of organic chemistry. The significance of DPM as a model of rubber hydrocarbon in the presence of sulfur alone was discussed in Part I. British investigators using olefins such as dihydromyrcene and squalene as models studied the mechanism of acceleration. However, they could not deduce the mechanism so clearly as we in this paper, only because the reaction of olefins with sulfur seemed to be more complex than that of DPM. Investigations on the reaction of DPM, sulfur and accelerators in the presence of either zinc oxide or zinc soap will be reported in other papers of this series.

Power-law kinetics of methanol synthesis from carbon dioxide and hydrogen on copper–zinc oxide catalysts with alumina or zirconia supports

2016 ◽  
Vol 270 ◽  
pp. 31-42 ◽  
Author(s):  
Kilian Kobl ◽  
Sébastien Thomas ◽  
Yvan Zimmermann ◽  
Ksenia Parkhomenko ◽  
Anne-Cécile Roger
Keyword(s):  
Carbon Dioxide ◽  
Zinc Oxide ◽  
Power Law ◽  
Methanol Synthesis ◽  
Oxide Catalysts ◽  
Copper Zinc ◽  
Power Law Kinetics ◽  
Copper Zinc Oxide ◽  
Kinetics Of

Oil extraction from the sunflower seeds, mechanism and kinetics of the process

2020 ◽  
Vol 3 (1) ◽  
pp. 155-160
Author(s):  
Ye. M. Semenyshyn ◽  
◽  
V. M. Atamanyuk ◽  
O. Ya. Dobrovetska ◽  
T. I. Rymar ◽  
...  
Keyword(s):  
Oil Extraction ◽  
Sunflower Seeds ◽  
Mechanism And Kinetics ◽  
Kinetics Of

Studies on the Behavior Some Paints in Electro-insulating Fluid Based on Vegetable Esters

2018 ◽  
Vol 69 (5) ◽  
pp. 1139-1144
Author(s):  
Iosif Lingvay ◽  
Adriana Mariana Bors ◽  
Livia Carmen Ungureanu ◽  
Valerica Stanoi ◽  
Traian Rus
Keyword(s):  
Structural Changes ◽  
Oxidation Processes ◽  
High Oleic ◽  
Painting Materials ◽  
Insulating Paper ◽  
Different Types ◽  
Mechanism And Kinetics ◽  
Kinetics Of ◽  
Natural Ester

For the purpose of using three different types of painting materials for the inner protection of the transformer vats, their behavior was studied under actual conditions of operation in the transformer (thermal stress in electro-insulating fluid based on the natural ester in contact with copper for electro-technical use and electro-insulating paper). By comparing determination of the content in furans products (HPLC technique) and gases formed (by gas-chromatography) in the electro-insulating fluid (natural ester with high oleic content) thermally aged at 130 �C to 1000 hours in closed glass vessels, it have been found that the presence the investigated painting materials lead to a change in the mechanism and kinetics of the thermo-oxidation processes. These changes are supported by oxygen dissolved in oil, what leads to decrease both to gases formation CO2, CO, H2, CH4, C2H4 and C2H6) and furans products (5-HMF, 2-FOL, 2 -FAL and 2-ACF). The painting materials investigated during the heat treatment applied did not suffer any remarkable structural changes affecting their functionality in the electro-insulating fluid based on vegetable esters.

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