Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Shaped binderless titanosilicate zeolite ts-1

a technology of zeolite and zeolite, which is applied in the field of process for producing crystalline titanosilicate zeolite ts1, can solve the problems of increasing the complexity of catalyst manufacturing involving zeolitic materials, affecting the catalytic performance of zeolite so bound and formed, and reducing the number of process steps.

Inactive Publication Date: 2008-06-12
MILLER STEPHEN J
View PDF16 Cites 17 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The process produces shaped, binderless catalysts with high titanosilicate content and small crystallite size, reducing environmental impact and maintaining catalytic performance by eliminating the need for excess liquid treatment and simplifying the manufacturing process.

Problems solved by technology

The liquid, in turn, must be treated for reuse or else be discarded, with potentially deleterious environmental consequences.
These binding and forming steps greatly increase the complexity of catalyst manufacture involving zeolitic materials.
The additional steps may also have an adverse effect on the catalytic performance of the zeolite so bound and formed.

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
  • Shaped binderless titanosilicate zeolite ts-1

Examples

Experimental program
Comparison scheme
Effect test

example 1

Preparation of Titanosilicate Zeolite TS-1 Using Ti(butoxide)4

[0060]A reaction mixture was prepared by placing 100 grams of Ultrasil® VN3SP silica in a Baker-Perkins mixer. Sixty-five grams of 40 wt. % tetrapropylammonium hydroxide (TPAOH) was added to the mixer and mixed with the silica for 30 minutes. Eight grams of Ti(butoxide)4 was dissolved in 20 grams of isopropyl alcohol and added to the mixer, followed by 35 grams of water. The mixture was then mixed until a uniform paste was obtained. It is important that the Ti(butoxide)4 be thoroughly dispersed throughout the paste. No binder is added to the paste.

[0061]The paste was dried to an extrudable consistency and extruded with a Carver press using a 1 / 12 inch die. Half of the extrudate was dried to 47% volatiles, and the other half was dried to 43% volatiles.

[0062]Both batches were crystallized in an autoclave at autogenous pressure at 150° C. for 24 hours. The resulting products were binderless extrudates containing essentially...

example 2

Preparation of Titanosilicate Zeolite TS-1 Using Ti(butoxide)4

[0063]Titanosilicate zeolite TS-1 was prepared by the procedure of Example 1, except that the Ti(butoxide)4 was mixed with the TPAOH (without isopropyl alcohol) prior to addition to the mixer. The resulting product was binderless extrudates containing essentially 100% titanosilicate zeolite TS-1 as determined by X-ray diffraction analysis and infra-red spectroscopy (as described in aforementioned U.S. Pat. No. 4,410,501). The extrudates contain crystals of TS-1 having a crystallite size of less than about 0.4 micron, as determined by Scanning Electron Microscopy (“SEM”).

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

There is provided a shaped, binderless catalyst comprising titanosilicate TS-1 and TS-1 precursors; wherein the catalyst is shaped into particles with a defined cross sectional diameter. There is provided a shaped, binderless catalyst, comprising sufficient moisture to retain a desired shape and comprising at least 95 weight percent titanosilicate TS-1 and titanosilicate TS-1 precursors. There is also provided a crystalline titanosilicate zeolite TS-1, having a) shaped, binderless particles with a defined cross sectional diameter, and b) a crystallite size of less than 0.2 micron.

Description

[0001]This application is a divisional patent application, and it claims the benefit of the co-pending prior nonprovisional application Ser. No. 11 / 226,609, filed Sep. 13, 2005. This divisional application is being filed as the result of a restriction requirement. The USPTO classification of this divisional application is 502, subclass 64. The assigned art unit of the parent application is 4116.FIELD OF THE INVENTION[0002]The present invention relates to a process for producing crystalline titanosilicate zeolite TS-1 from a reaction mixture which contains only sufficient water to form zeolite TS-1. As used herein, the terms “titanosilicate zeolite TS-1”, “zeolite TS-1”, or simply TS-1 refers to zeolites having the framework topology of ZSM-5 which contain titanium atoms in their framework structure.BACKGROUND[0003]Prior art methods of preparing crystalline zeolite TS-1 typically produce finely divided crystals which must be separated from an excess of liquid in which the zeolite is ...

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(United States)
IPC IPC(8): B01J21/06B32B5/16
CPCB01J29/89C01B37/005C07C45/28C07D301/12Y10T428/2973Y10T428/2982Y10T428/29C07C49/403C01B39/00C01B39/36
Inventor MILLER, STEPHEN J.
Owner MILLER STEPHEN J
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com