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1. General characteristics of hydrogenation
1.1 Thermodynamics
All hydrogenations are exothermic reactions . In each family of compounds (Table 1 ), the free enthalpy of hydrogenation decreases slightly as the molecular weight of the hydrocarbons increases.
What's more, the addition of hydrogen to an unsaturated molecule results in a decrease in the entropy of the entire system, so all hydrogenations are balanced reactions. Obtaining saturated molecules is favored by low temperatures and high hydrogen pressures: even at 10 MPa pressure, hydrogenations of most...
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Unit operations. Chemical reaction engineering
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General characteristics of hydrogenation
Selective hydrogenation
Bibliography
Patents
Process for the selective catalytic hydrogenation in the liquid phase of a normally gaseous feedstock containing ethylene, acetylene and gasoline, FR2629094.
Process for the catalytic hydrogenation of acetylene contained in a mixture of ethylene and ethylene, FR2552078.
Filter plate for descending co-current bed reactor for liquid gas, FR2889973.
Directory
Main suppliers of hydrogenation catalysts
Axens, France http://www.axens.net
BASF, Germany http://www.basf.com
CRI-Catalysts, Netherlands http://www.cri-catalysts.com
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