Organic compounds -- part of the class 532-570 series – Organic compounds – Oxygen containing
Reexamination Certificate
2007-04-10
2007-04-10
Keys, Rosalynd (Department: 1621)
Organic compounds -- part of the class 532-570 series
Organic compounds
Oxygen containing
Reexamination Certificate
active
10642952
ABSTRACT:
A process for producing dimethyl ether, which includes dehydrating methanol in vapor phase in the presence of an activated alumina catalyst having an average pore radius of 2.5 nm to 8.0 nm both inclusive and having a sodium oxide content of 0.07 wt % or less. This invention provides a process for producing DME with an improved conversion ratio using a highly active DME-production catalyst.
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Shoji Kazuo
Terai Satoshi
Keys Rosalynd
Knobbe Martens Olson & Bear LLP
Toyo Engineering Corporation
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