Chemistry of hydrocarbon compounds – Unsaturated compound synthesis – From nonhydrocarbon feed
Reexamination Certificate
2006-10-31
2008-10-14
Wood, Elizabeth D (Department: 1793)
Chemistry of hydrocarbon compounds
Unsaturated compound synthesis
From nonhydrocarbon feed
C585S638000, C585S639000
Reexamination Certificate
active
07435863
ABSTRACT:
A porous crystalline material is described having the chabazite framework type and having a composition involving the molar relationship:in-line-formulae description="In-line Formulae" end="lead"?X2O3:(n)YO2,in-line-formulae description="In-line Formulae" end="tail"?wherein X is a trivalent element, such as aluminum, boron, iron, indium, and/or gallium; Y is a tetravalent element such as silicon, tin, titanium and/or germanium; and n is greater than 100 and typically greater than 200, such as about 300 to about 4000, for example from about 400 to about 1200. The material is synthesized in a fluoride medium and exhibits activity and selectivity in the conversion of methanol to lower olefins, especially ethylene and propylene.
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Levin Doron
Reyes Sebastian C.
Strohmaier Karl G.
ExxonMobil Chemical Patents Inc.
Wood Elizabeth D
LandOfFree
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