US Patent No: 5,233,097

Number of patents in Portfolio can not be more than 2000

Oxidation of aromatics to hydroxyaromatics using aluminosilicates containing framework titanium

Stats

ATTORNEY / AGENT: (SPONSORED)
 

Importance

Loading Importance Indicators... loading....

Abstract

Certain crystalline titanoaluminosilicate molecular sieve compositions having titanium, aluminum, and silicon present as framework tetrahedral oxide units are particularly effective in hydroxylating the aromatic nucleus of aromatic compounds using hydrogen peroxide, even where the hydrogen peroxide is used at concentrations of 10 weight percent or less. The variant where the exchangeable hydrogens of the titanoaluminosilicate are replaced by an alkali or alkaline earth metal cation is particularly favored because of the concomitant increase in selectivity. Excellent utilization of hydrogen peroxide often is observed, even when the hydroxylation is effected at temperatures under about 60.degree. C.

Loading the Abstract Image... loading....

First Claim

Related Publications

Loading Related Publications... loading....

Patent Owner(s)

Patent OwnerAddressTotal Patents
UOP LLCDES PLAINES, IL3846

International Classification(s)

  • [Classification Symbol]
  • [Patents Count]

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Hyatt, Eric M Naperville, IL 1 16
Malloy, Thomas P Lake Zurich, IL 30 407
Nemeth, Laszlo T Barrington, IL 36 177

Cited Art

Patent Info (Count) # Cites Year
 
BORREGAARD ITALIA S.P.A. (1)
4,396,783 Hydroxylating aromatic hydrocarbons 13 1981
 
SNAMPROGETTI S.P.A. (1)
4,410,501 Preparation of porous crystalline synthetic material comprised of silicon and titanium oxides 197 1982
 
UOP LLC (1)
5,098,687 Substituted aluminosilicate compositions and process for preparing same 19 1990

Patent Citation Ranking

Forward Cites

Patent Info (Count) # Cites Year
 
SABIC INNOVATIVE PLASTICS IP B.V. (3)
6,232,510 Method and composition for hydroxylation of aromatic substrates 1 1999
6,410,805 Method and composition for hydroxylation of aromatic substrates 1 2001
6,323,378 Method and composition for hydroxylation of aromatic substrates 0 2001
 
UOP LLC (3)
5,569,791 Production of phenol from a hydrocarbon feedstock 4 1995
5,559,274 Production of phenol from a hydrocarbon feedstock 3 1995
5,688,975 Rare earth stabilized Cr/Ti substituted molecular sieves 4 1996
 
COUNCIL OF SCIENTIFIC AND INDUSTRIAL RESEARCH (2)
5,493,061 Process for the conversion of phenol to hydroquinone and catechol 3 1994
5,786,519 Process for the preparation of a mixture of guaiacol and p-methoxy phenol 0 1996
 
SUNOCO, INC. (R&M) (2)
5,981,424 Catalysts for hydroxylation and ammination of aromatics using molecular oxygen as the terminal oxidant without coreductant 7 1997
5,952,532 Hydroxylation of aromatics using molecular oxygen as the terminal oxidant without coreductant 7 1997
 
ARCO CHEMICAL TECHNOLOGY, L.P. (1)
5,412,122 Epoxidation process 14 1993
 
ENI S.P.A. (1)
6,288,004 Activation method of titanium silicalite 4 1999
 
LYONDELL CHEMICAL TECHNOLOGY, L.P. (1)
5,474,754 Preparation of an aluminosilicotitanate isomorphous with zeolite beta 11 1994
 
POLIMERI EUROPA S.P.A. (1)
7,759,529 Continuous process for the preparation of phenol from benzene in a fixed bed reactor 0 2005
 
SANDOZ LTD. (1)
5,648,562 Oxidation process 3 1995
 
SUN COMPANY, INC. (R&M) (1)
5,962,752 Leached alumina vanadyl catalysts for hydroxylation of aromatics using molecular oxygen as the terminal oxidant without coreductant 2 1997