Methods of catalytic hydrogenation for ethylene glycol formation
US-2015375209-A1 · Dec 31, 2015 · US
ZSM-5, its preparation and use in ethylbenzene dealkylation
US9376325B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9376325-B2 |
| Application number | US-201313922328-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jun 20, 2013 |
| Priority date | Sep 10, 2007 |
| Publication date | Jun 28, 2016 |
| Grant date | Jun 28, 2016 |
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Abstract
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A new configuration of ZSM-5 is provided whereby the crystals have a higher average silica to alumina ratio at the edges of each crystallite than in the center as determined from a narrow slit line scan profile obtained from SEM/EDX or TEM/EDX elemental analysis. Such ZSM-5 crystals are obtained by a preparation process using L-tartaric acid. The new configuration ZSM-5 provides significantly reduced xylene losses in ethylbenzene dealkylation, especially when combined with silica as binder, and one or more hydrogenation metals selected from platinum, tin, lead, silver, copper, and nickel.
First claim
Opening claim text (preview).
That which is claimed is: 1. An ethylbenzene dealkylation process, which process comprises: contacting, in the presence of hydrogen, a feedstock which comprises ethylbenzene with a catalyst composition, comprising ZSM-5 crystals, comprising a ZSM-5 crystallite having an average SAR at the edge of the crystallite and an average SAR at the centre of the crystallite, as determined via SEM/EDX or TEM/EDX elemental analysis, wherein the average SAR at the edge of the crystallite is high…
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Operations & Transport · mapped topic
- B01J29/46Primary
Operations & Transport · mapped topic
Cross-Sectional Technologies · mapped topic
Chemistry & Metallurgy · mapped topic
Chemistry & Metallurgy · mapped topic
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- What does patent US9376325B2 cover?
- A new configuration of ZSM-5 is provided whereby the crystals have a higher average silica to alumina ratio at the edges of each crystallite than in the center as determined from a narrow slit line scan profile obtained from SEM/EDX or TEM/EDX elemental analysis. Such ZSM-5 crystals are obtained by a preparation process using L-tartaric acid. The new configuration ZSM-5 provides significantly r…
- Who is the assignee on this patent?
- Shell Oil Co
- What technology area does this patent fall under?
- Primary CPC classification B01J29/46. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Tue Jun 28 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).