Chemistry of hydrocarbon compounds – Aromatic compound synthesis – By ring formation from nonring moiety – e.g. – aromatization,...
Reexamination Certificate
2011-08-30
2011-08-30
Nguyen, Tam M (Department: 1771)
Chemistry of hydrocarbon compounds
Aromatic compound synthesis
By ring formation from nonring moiety, e.g., aromatization,...
C585S359000, C585S469000, C585S642000, C585S733000, C585S422000
Reexamination Certificate
active
08008535
ABSTRACT:
A process for converting gaseous alkanes to olefins and higher molecular weight hydrocarbons wherein a gaseous feed containing alkanes is reacted with a dry bromine vapor to form alkyl bromides and hydrobromic acid vapor. The mixture of alkyl bromides and hydrobromic acid are then reacted over a synthetic crystalline alumino-silicate catalyst, such as an X or Y type zeolite, at a temperature of from about 250° C. to about 500° C. so as to form olefins, higher molecular weight hydrocarbons and hydrobromic acid vapor. Various methods are disclosed to remove the hydrobromic acid vapor from the olefins and higher molecular weight hydrocarbons and to generate bromine from the hydrobromic acid for use in the process.
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Ebel Jack E.
Marathon GTF Technology, Ltd.
Nguyen Tam M
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