Unlock instant, AI-driven research and patent intelligence for your innovation.

Highly selective alkylation process with low zeolite catalyst composition

A catalyst and composition technology, applied in the direction of catalysts, hydrocarbons, hydrocarbons, etc., can solve the problems of expensive, reduced effective use of zeolite, high cost of zeolite, etc.

Inactive Publication Date: 2017-08-29
UOP LLC
View PDF8 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Furthermore, at high zeolite content, the zeolite in the catalyst tends to agglomerate, reducing the effective utilization of the zeolite
Finally, due to the high cost of zeolites, catalysts containing high levels of zeolites and methods of using these catalysts are also expensive

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Highly selective alkylation process with low zeolite catalyst composition
  • Highly selective alkylation process with low zeolite catalyst composition
  • Highly selective alkylation process with low zeolite catalyst composition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0068] Example 1 is a comparative example made of 70 wt% UZM-8 and 30 wt% alumina. When preparing the catalyst, the synthesized UZM-8 and HNO 3 Peptized Catapal C alumina (prepared using a HNO3 / alumina weight ratio of 0.17) was mixed and ground so that the consistency of the dough was easily extruded into cylindrical pellets with a 1 / 16" diameter. Extrusion The material was calcined in flowing air at 600° C. for 1 hour. The calcined catalyst was then subjected to ammonium ion exchange at 60° C. using a 10 wt.

Embodiment 2

[0069] Example 2 is also a comparative example prepared in the same manner as Example 1 except that it contains 50 wt% alumina and 50 wt% UZM-8 in a trilobal shape with a 1 / 16" circumference.

[0070] Examples 3 and 4 represent those used in the present invention and contained 30 and 12 wt. % UZM-8 zeolite, respectively, with the balance being alumina, in a trilobal shape with a 1 / 16" circumference.

[0071] To test catalyst performance, 25 grams of catalyst was mixed with quartz sand to fill the gaps to ensure proper flow distribution before loading into a 7 / 8" ID standard steel reactor. The catalyst was preconditioned with a 3A dryer at 200°C 12 hours of flowing benzene drying. After drying, recycle benzene was introduced followed by propylene. The benzene to propylene molar ratio used for this test was 2.0, and the product effluent to combined fresh feed ratio was 7.4 (by weight), Propylene weight hourly space velocity is 1.04 hours -1 , the inlet temperature is 115°C, and...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

A method for alkylation of a feedstock is described. The method includes contacting the feedstock comprising at least one alkylatable aromatic compound and an alkylating agent with a first alkylating catalyst composition under alkylating conditions, the first alkylating catalyst composition comprising UZM-8 zeolite and a binder, the first alkylating catalyst composition having 20-30 wt% UZM-8 zeolite and the catalyst having a nitrogen to zeolite aluminum molar ratio of between 0.01 to 0.040; wherein a total alkylated selectivity at a temperature and a molar ratio of alkylatable aromatic compound to alkylating agent is greater than 99.0%.

Description

[0001] priority statement [0002] This application claims priority to US Application No. 14 / 535,933, filed November 11, 2014, the entire contents of which are incorporated herein by reference. technical field [0003] The present invention relates to a feedstock alkylation process, and more particularly to a highly active, stable and selective alkylation process using a low zeolite catalyst composition having a low nitrogen / zeolite aluminum molar ratio. Background technique [0004] have C 2 to C 4 Alkylation of aromatics of olefins and transalkylation of polyalkylated aromatics are two common reactions used to prepare monoalkylated aromatics. Examples of the commercial practice of these two reactions to produce ethylbenzene are the alkylation of benzene with ethylene and the transalkylation of benzene and diethylbenzene. [0005] Therefore, a combination of alkylation and transalkylation can maximize ethylbenzene production. Such a combination can be carried out in a p...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C07C2/66C07C15/085C07C15/073B01J29/04
CPCC07C2521/04C07C2521/08B01J29/70Y02P20/52C01B39/48B01J2229/42C07C2/66C07C2529/70B01J35/50B01J2235/00B01J2235/15B01J35/55C07C15/085C07C15/073B01J2219/00164
Inventor D-Y·詹P·考克斯R·J·施密特
Owner UOP LLC