Dehydrogenation catalyst and process
First Claim
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1. A process for the dehydrogenation of a ketone to an aromatic alcohol, the process comprising contacting a feed comprising a cycloaliphatic alcohol or ketone under dehydrogenation conditions with catalyst composition comprising:
- (i) a support;
(ii) a dehydrogenation component comprising at least one metal or compound thereof selected from Groups 6 to 10 of the Periodic Table of Elements; and
(iii) tin or a tin compound, wherein the tin is present in an amount of 0.01 wt % to about 0.25 wt %, the wt % based upon the total weight of the catalyst composition; and
further wherein said dehydrogenation conditions comprise a temperature of about 250°
C. to about 500°
C., a pressure of about 100 kPa to about 3550 kPa, a weight hourly space velocity of about 0.2 hr−
1 to 50 hr−
1, and a hydrogen to cyclohexanone-containing feed molar ratio of about 2 to about 20.
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Abstract
A catalyst composition comprises (i) a support; (ii) a dehydrogenation component comprising at least one metal or compound thereof selected from Groups 6 to 10 of the Periodic Table of Elements; and (iii) tin or a tin compound, wherein the tin is present in an amount of 0.01 wt % to about 0.25 wt %, the wt % based upon the total weight of the catalyst composition.
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Citations
4 Claims
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1. A process for the dehydrogenation of a ketone to an aromatic alcohol, the process comprising contacting a feed comprising a cycloaliphatic alcohol or ketone under dehydrogenation conditions with catalyst composition comprising:
- (i) a support;
(ii) a dehydrogenation component comprising at least one metal or compound thereof selected from Groups 6 to 10 of the Periodic Table of Elements; and
(iii) tin or a tin compound, wherein the tin is present in an amount of 0.01 wt % to about 0.25 wt %, the wt % based upon the total weight of the catalyst composition; and
further wherein said dehydrogenation conditions comprise a temperature of about 250°
C. to about 500°
C., a pressure of about 100 kPa to about 3550 kPa, a weight hourly space velocity of about 0.2 hr−
1 to 50 hr−
1, and a hydrogen to cyclohexanone-containing feed molar ratio of about 2 to about 20. - View Dependent Claims (2, 3)
- (i) a support;
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4. A process for producing phenol from benzene, the process comprising:
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(a) reacting benzene and hydrogen with a catalyst under hydroalkylation conditions to produce cyclohexylbenzene; (b) oxidizing cyclohexylbenzene from (a) to produce cyclohexylbenzene hydroperoxide; (c) converting cyclohexylbenzene hydroperoxide from (b) to produce an effluent steam comprising phenol and cyclohexanone; and (d) contacting at least a portion of the effluent stream from (c) with a dehydrogenation catalyst comprising;
(i) a support;
(ii) a dehydrogenation component comprising at least one metal or compound thereof selected from Groups 6 to 10 of the Periodic Table of Elements; and
(iii) tin or a tin compound, wherein the tin is present in an amount of 0.01 wt % to about 0.25 wt %, the wt % based upon the total weight of the catalyst composition, wherein the contacting occurs under dehydrogenation conditions effective to convert at least part of the cyclohexanone in the effluent stream into phenol and hydrogen; and
further wherein said dehydrogenation conditions comprise a temperature of about 250°
C. to about 500°
C., a pressure of about 100 kPa to about 3550 kPa, a weight hourly space velocity of about 0.2 hr−
1 to 50 hr−
1, and a hydrogen to cyclohexanone-containing feed molar ratio of about 2 to about 20.
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Specification
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Current AssigneeExxonMobil Chemical Patents Inc. (Exxon Mobil Corporation)
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Original AssigneeExxonMobil Chemical Patents Inc. (Exxon Mobil Corporation)
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InventorsDakka, Jihad M., DeCaul, Lorenzo C., Helton, Terry E., Kuechler, Keith H., Wallace, Jenna L.
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Primary Examiner(s)Zucker, Paul A
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Assistant Examiner(s)LUDERER, MARK R
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Application NumberUS13/990,440Publication NumberTime in Patent Office1,915 DaysField of SearchUS Class Current1/1CPC Class CodesB01J 21/08 SilicaB01J 23/24 Chromium, molybdenum or tun...B01J 23/32 Manganese, technetium or rh...B01J 23/626 with tinB01J 35/394 Metal dispersion value, e.g...B01J 37/0207 Pretreatment of the supportC07C 37/06 by conversion of non-aromat...C07C 37/07 with simultaneous reduction...C07C 39/04 PhenolY02P 20/52 using catalysts, e.g. selec...
