# US 10,501,390 B2 · Alkane oxidative dehydrogenation and/or alkene oxidation

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- Number: US 10,501,390 B2
- Document ID: US10501390B2
- Status: Granted
- Kind: B2
- Application number: 15/322,479
- Filed: 2015-06-29
- Published: 2017-05-18
- Granted: 2019-12-10
- Earliest claimed: 2014-06-30
- Assignees: Shell Oil Company
- Applicants: Shell Oil Company
- Inventors: Alouisius Nicolaas Renée Bos; Ronald Jan Schoonebeek; Frank Spies; Michael Johannes Franciscus Maria Verhaak
- Web page: https://patentgrep.com/patent/US10501390B2

## CPC

- C07C 5/48: with oxygen as an acceptor
- B01J 27/0576: {Tellurium; Compounds thereof}
- B01J 35/40: characterised by dimensions, e.g. grain size (in a colloidal state B01J35/23; crystallite size B01J35/77)
- B01J 37/0036: {Grinding}
- B01J 37/0236: {Drying, e.g. preparing a suspension, adding a soluble salt and drying}
- B01J 37/031: {Precipitation}
- B01J 37/04: Mixing {(B01J37/0009, B01J37/0018 take precedence)}
- B01J 37/06: Washing {(B01J37/0009, B01J37/0018 take precedence)}
- B01J 37/08: Heat treatment {(B01J37/0009, B01J37/0018 take precedence)}
- B01J 2523/00: Constitutive chemical elements of heterogeneous catalysts
- C07C 2523/28: Molybdenum
- C07C 2523/847: Vanadium, niobium or tantalum
- C07C 2527/057: Selenium or tellurium; Compounds thereof
- Y02P 20/52: using catalysts, e.g. selective catalysts
- C07C: ACYCLIC OR CARBOCYCLIC COMPOUNDS
- B01J: CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- Y02P: CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS

## Abstract

The invention relates to a process of the oxidative dehydrogenation of an alkane containing 2 to 6 carbon atoms and/or the oxidation of an alkene containing 2 to 6 carbon atoms, comprising contacting a first gas stream comprising oxygen and the alkane containing 2 to 6 carbon atoms and/or the alkene containing 2 to 6 carbon atoms with a mixed metal oxide catalyst containing molybdenum, vanadium, niobium and optionally tellurium; followed by contacting a second gas stream comprising methane, an inert gas or oxygen or any combination of two or more of these with the catalyst, wherein the second gas stream comprises 0 to 25 vol. % of the alkane containing 2 to 6 carbon atoms and/or alkene containing 2 to 6 carbon atoms.

## Claims

### Claim 1

A process of the oxidative dehydrogenation of an alkane containing 2 to 6 carbon atoms and/or the oxidation of an alkene containing 2 to 6 carbon atoms, comprising
contacting a first gas stream comprising oxygen and the alkane containing 2 to 6 carbon atoms and/or the alkene containing 2 to 6 carbon atoms with a mixed metal oxide catalyst containing molybdenum, vanadium, niobium and optionally tellurium; followed by
contacting a second gas stream comprising methane with the catalyst, wherein the second gas stream comprises no or substantially no alkane containing 2 to 6 carbon atoms and no or substantially no alkene containing 2 to 6 carbon atoms, followed by
stopping the contacting of the first gas stream while continuing the contacting the second gas stream.

### Claim 2 (depends on 1)

The process according to claim 1, wherein the temperature during the entire process is of from 300 to 500° C.

### Claim 3 (depends on 2)

The process according to claim 2, wherein the temperature during the entire process is of from 310 to 450° C.

### Claim 4 (depends on 1)

The process according to claim 1, wherein the pressure during the entire process is of from 0.1 to 15 bara.

### Claim 5 (depends on 1)

The process according to claim 1, wherein the process is a process of the oxidative dehydrogenation of an alkane containing 2 to 6 carbon atoms and wherein said alkane is ethane or propane.

### Claim 6 (depends on 1)

The process according to claim 1, wherein the process is a process of the oxidation of an alkene containing 2 to 6 carbon atoms and wherein said alkene is ethylene or propylene.

### Claim 7 (depends on 1)

The process according to claim 1, wherein the contacting the first gas stream is done at a first temperature and the contacting the second gas stream is done at a second temperature less than the first temperature.

### Claim 8 (depends on 1)

The process according to claim 1, further comprising stopping the contacting of the second gas stream while gradually introducing the first gas stream.

### Claim 9 (depends on 1)

The process according to claim 1, wherein the second gas stream further comprises an inert gas.

### Claim 10 (depends on 1)

The process according to claim 1, wherein the second gas stream further comprises an inert gas and oxygen.

### Claim 11 (depends on 1)

The process according to claim 1, wherein the second gas stream further comprises oxygen.