Exothermic reactions in Al–CuO nanocomposites

2006 ◽  
Vol 451 (1-2) ◽  
pp. 34-43 ◽  
Author(s):  
Swati M. Umbrajkar ◽  
Mirko Schoenitz ◽  
Edward L. Dreizin
Keyword(s):  
Exothermic Reactions

Enhanced heat transfer by exothermic reactions in laminar flow capillary reactors

2016 ◽  
Vol 141 ◽  
pp. 356-362 ◽  
Author(s):  
Sebastian Schwolow ◽  
Jing Ying Ko ◽  
Norbert Kockmann ◽  
Thorsten Röder
Keyword(s):  
Heat Transfer ◽  
Laminar Flow ◽  
Enhanced Heat Transfer ◽  
Exothermic Reactions ◽  
Flow Capillary

scholarly journals Exergy efficiency of thermochemical syngas-to-ethanol production plants

2021 ◽  
Vol 3 (5) ◽  
Author(s):  
Marcos Paulo Gabriel da Costa e Silva ◽  
Júlio Cesar de Carvalho Miranda
Keyword(s):  
Ethanol Production ◽  
Process Improvement ◽  
Second Generation ◽  
Exergy Efficiency ◽  
Exergy Destruction ◽  
Exothermic Reactions ◽  
Production Processes ◽  
Different Temperatures ◽  
Exergy Analyses ◽  
Second Generation Ethanol

Abstract This work presents exergy analyses applied in four different conceptual second-generation ethanol production processes through a thermochemical route using catalysts based on Molybdenum (P-1), Copper (P-2), and Rhodium (P-3 and P-4), aiming to assess their exergetic efficiencies. The results show that the conceptual processes have satisfactory exergy efficiencies in both cases, when compared among themselves and when compared with other processes reported in literature. The processes’ efficiency for P-1, P-2, P-3 and P-4 were, respectively, 52.4%, 41.4%, 43.7% and 48.9%. The reactors were the sections in which exergy destruction was more significant, due to the exothermic reactions and mixing points (where streams with different temperatures were mixed). Such results show the potential of thermochemical ethanol production, besides opening the possibilities of process improvement. Graphic abstract

Properties of nonadiabatic combustion waves in competitive exothermic reactions

2020 ◽  
Vol 77 ◽  
pp. 1216-1228
Author(s):  
Z. Huang ◽  
H.S. Sidhu ◽  
I.N. Towers ◽  
Z. Jovanoski ◽  
S. Watt ◽  
...  
Keyword(s):  
Combustion Waves ◽  
Exothermic Reactions

Thermoanalytical Methods in Vulcanizate Analysis II. Derivative Thermogravimetric Analysis

1975 ◽  
Vol 48 (4) ◽  
pp. 661-677 ◽  
Author(s):  
D. W. Brazier ◽  
G. H. Nickel
Keyword(s):  
Preceding Paper ◽  
Limiting Factor ◽  
Inorganic Pigments ◽  
Thermal Stabilities ◽  
Pyrolysis Products ◽  
Exothermic Reactions ◽  
Temperature Range ◽  
Black Oil ◽  
Scan Rate ◽  
Tg And Dtg

Abstract We have shown in this and the preceding paper that fully compounded stocks can be analyzed for all main constituents by use of a combination of DSC, TG, and DTG. Further, this can be achieved on a time scale consistent with routine quality control. DSC gives information on cure characteristics, sulfur, and accelerator levels in approximately five minutes. Elastomer, elastomer ratio, carbon black, oil/plasticizer, and inorganic pigments are determined in about 35 minutes by TG/DTG, at a scan rate of 10°C/min. This time can be reduced by increasing the scan rate, but interference from highly exothermic reactions can be a limiting factor. Each compound must be treated individually to determine the maximum scan rate that can be used without impairing reproducibility. Clearly limitations exist for identification of unknown blends by DTG. The main problem is that many commercial elastomers have very similar thermal stabilities, which results in DTG peaks in the same temperature range. Further work is being undertaken with the DTG—gas chromatography interface to identify not only the pyrolysis products, but the temperature range over which they are evolved. In this manner, the DTG acts essentially as a thermal fraetionation unit and GC analysis of products from a given component in a blend can be achieved.

Development of an Industrial Multi-Injection Microreactor for Fast and Exothermic Reactions - Part II

2008 ◽  
Vol 31 (8) ◽  
pp. 1155-1161 ◽  
Author(s):  
D. M. Roberge ◽  
N. Bieler ◽  
M. Mathier ◽  
M. Eyholzer ◽  
B. Zimmermann ◽  
...  
Keyword(s):  
Exothermic Reactions
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