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Class Information
Number: 518
Name: Chemistry: fischer-tropsch processes; or purification or recovery of products thereof >
Description: This class provides for processes which include (a) the reaction of hydrogen with carbon monoxide, carbon dioxide or mixtures of these carbon oxides (Fischer-Tropsch synthesis) to yield one or more carbon compounds, e.g., hydrocarbons, alcohols, esters, acids, ketones, aldehydes, etc., or (b) the purification, separation, conversion or treatment of one or more of the products resulting from the Fischer-Tropsch synthesis, such as by saponification, oxidation, adsorption, solvent extraction, etc.










Class Number Class Name No. of Patents
518/722

Adsorption with a solid material

26
518/727

Forming salts or oximes of oxygen containing compounds to purify or recover

0
518/713

Group ib metal containing catalyst utilized for the fischer-tropsch reaction (i.e., cu, ag, or au)

331
518/714

Group vib metal containing catalyst utilized for the fischer-tropsch reaction (i.e., cr, mo, or w)

235
518/715

Group viii metal containing catalyst utilized for the fischer-tropsch reaction (i.e., fe, co, ni, ru, rh, pd, os, ir, or pt)

588
518/717

Group ia or iia light metal containing material utilized during the fischer tropsch step of the process (i.e., li, na, k, rb, cs, be, mg, ca, sr, or ba)

169
518/718

In the form of a salt

23
518/719

Iron containing catalyst

126
518/720

Pretreatment of the catalyst

49
518/721

The catalyst contains a metal in addition to the iron, or another material utilized contains a metal other than iron (e.g., as a promoter, retarder, etc.)

119
518/716

Rhodium containing catalyst

77
518/726

Hydrogenation with gaseous hydrogen to purify or recover

61
518/709

Including regeneration of catalyst

91
518/710

Solvent utilized

21
518/700

Liquid phase fischer-tropsch reaction

831
518/701

Rhodium containing catalyst utilized

67
518/728

Miscellaneous

162
518/706

Plural zones each having a fischer-tropsch reaction

172
518/707

Diverse catalysts utilized in at least two zones

49
518/708

Water utilized

24
518/723

Salt containing extractant utilized

3
518/724

Solvent extraction utilized

13
518/725

Alcohol containing extractant utilized

13
518/712

Temperature control or regulation of the fischer-tropsch reaction

126
518/705

Treatment of feed or recycle stream

296
518/711

Water utilized during the fischer-tropsch step of the process

49
518/702

With preliminary reaction to form hydrogen or a carbon oxide

339
518/703

Gaseous oxygen utilized in the preliminary reaction

365
518/704

Water utilized in the preliminary reaction

336
 
 
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