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A kind of fiber catalyst forming method of ts-1 titanium silicon molecular sieve catalyst

A technology of titanium-silicon molecular sieve and molding method, which is applied in the direction of molecular sieve catalysts, chemical instruments and methods, physical/chemical process catalysts, etc., can solve the problem that the cavity cannot form channel holes, and achieve the effect of high specific surface area

Inactive Publication Date: 2014-10-15
DALIAN LIGONG QIWANGDA CHEM TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the above-mentioned pore-forming agents are either small in size and cannot form through-type pores, or they are granular substances that can only cause cavities but not channel pores.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Dissolve the refractory polymer material that can be carbonized in a solvent to form a viscous spinning solution, then put the micron TS-1 molecular sieve powder into the viscous solution, mix evenly, so that the carrier accounts for 20% of the molded product, Spray the viscous solution into filaments, then carbonize the carbon fibers, and finally activate them. During carbonization and activation treatment, pre-oxidize in air at 230°C for 3 hours, then heat to 850°C in an inert atmosphere such as nitrogen and helium, then introduce water vapor and carbon dioxide, and perform activation treatment at 850°C for 3 hours to obtain product B , its specific surface area increased by 10.3% compared with product A.

Embodiment 2

[0039] Repeat Example 1, but the content of the carrier in the molded product is adjusted to 40%, 60%, and 80%, and the specific surface area of ​​the catalyst product is increased by 13.4%, 16.7%, and 20.1% compared with product B.

Embodiment 3

[0041] Repeat Example 1, but adjust the pre-oxidation temperature to 250°C and 270°C, and the specific surface area of ​​the catalyst product obtained is equivalent to that of product B.

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Abstract

The invention provides a fibrous catalyst molding method of a TS-1 titanium silicalite molecular sieve catalyst. A mixed viscous solution of a carbon-contained refractory polymeric material and a TS-1 molecular sieve is subjected to fibrous molding to form the catalyst. Since the carbon-contained fibrous polymer is added, a through hole is formed in the molded catalyst subjected to roasting so as to achieve high specific surface area to increase the contact probability among reactants and promote the occurrence of catalytic oxidization.

Description

technical field [0001] The invention belongs to the technical field of petrochemical catalysts, and relates to a molding method of a titanium-silicon molecular sieve catalyst. Background technique [0002] Titanium silicalite-1 is a new heteroatom molecular sieve with MFI structure developed in the early 1980s, referred to as TS-1. TS-1 molecular sieve has great application potential in the field of selective oxidation. The following patents and publications describe applications of TS-1: [0003] Such as CN1376151A(2000-08-08), CN1314348A(2001-03-30), CN1387948A(2002-02-05), CN1534030A(2003-03-28), CN1651405A(2004-11-04), CN1769277A(2005- 11-14), CN1810772A(2006-01-24), CN101172970A(2007-10-12), Journal of Catalysis, 25(2004)49-54; Molecular Catalysis, 19(2005)7-11; Journal of Petroleum (Petroleum Processing ), 22(2006) 72-77; Applied catalysis A: General, 246(2003) 69-77; Journal of molecular catalysis A: chemical, 210(2004) 171-178; Journal of molecular catalysis A: ch...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J29/89B01J35/10B01J35/06
Inventor 郭洪臣胡阳贾玉华李海龙张立兴
Owner DALIAN LIGONG QIWANGDA CHEM TECH
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