Rate/kinetic selective multiple bed adsorption process cycle
US-11883775-B2 · Jan 30, 2024 · US
Olefin oligomerization process
US9505685B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9505685-B2 |
| Application number | US-201214233205-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jun 14, 2012 |
| Priority date | Jul 25, 2011 |
| Publication date | Nov 29, 2016 |
| Grant date | Nov 29, 2016 |
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Abstract
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The invention provides an olefin oligomerization process comprising the steps of: i) reducing the level of nitriles in an olefin feed by contacting the feed with a guard bed comprising gamma alumina having a surface area greater than 250 m 2 /g; and ii) contacting the olefin feed obtained in step i) with an oligomerization catalyst under conditions suitable to oligomerize the olefins in the feed; wherein the gamma alumina used in step i) has been obtained from needle shaped boehmite.
First claim
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The invention claimed is: 1. An olefin oligomerization process comprising the steps of: i) reducing the level of nitriles in an olefin feed by contacting the feed with a guard bed comprising gamma alumina having a surface area greater than 250 m 2 /g; and ii) contacting the olefin feed obtained in step i) with an oligomerization catalyst under conditions suitable to oligomerize the olefins in the feed wherein a process for preparing the gamma alumina comprises sintering needle shaped boehmite, wherein the largest dimension of the needle shaped boehmite is 3 nm or less. 2. The process according to claim 1 , wherein the guard bed comprises at least another metal oxide besides gamma alumina. 3. The process according to claim 2 , wherein the other metal oxide is selected from the group consisting of tin oxide, zirconium oxide, titanium oxide, iron oxide, tungsten oxide and alumina of any phase other than gamma alumina, and mixtures thereof. 4. The process according to claim 1 , wherein the nitriles are selected from the group consisting of acetonitrile, propionitrile and mixtures thereof. 5. The process according to claim 1 , wherein the oligomerization catalyst used in step (ii) is selected from the group consisting of zeolite, nickel oxide, phosphoric acid, mixtures or combinations thereof. 6. The process according to claim 1 , wherein the guard bed used in step i) and the oligomerization catalyst used in step ii) are in separate vessels. 7. The process according to claim 1 , wherein the temperature employed during process step i) is in the range of 150 to 250° C. 8. The process according to claim 1 , wherein the olefin is selected from olefins having 3 to 6 carbon atoms.
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Bars or plates · CPC title
Scanning electron microscopy; Transmission electron microscopy · CPC title
Cylinders or rings · CPC title
Nanoparticles · CPC title
of the pentasil type, e.g. types ZSM-5, ZSM-8 or ZSM-11 · CPC title
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- What does patent US9505685B2 cover?
- The invention provides an olefin oligomerization process comprising the steps of: i) reducing the level of nitriles in an olefin feed by contacting the feed with a guard bed comprising gamma alumina having a surface area greater than 250 m 2 /g; and ii) contacting the olefin feed obtained in step i) with an oligomerization catalyst under conditions suitable to oligomerize the olefins in the fee…
- Who is the assignee on this patent?
- Mertens Machteld M W, Tosin Geraldine, Exxonmobil Chemical Patents Inc
- What technology area does this patent fall under?
- Primary CPC classification C07C7/12. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Nov 29 2016 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).