May 30, 2011

CAS databases provide millions of journal article references from more than 10,000 major scientific journals worldwide, patent and patent family references from 61 patent authorities around the world, and other reputable web sources.

The following patent record is from the CAplusSM database.

CAPLUS COPYRIGHT 2011 ACS

Patent Number: US 7935654
Title: Mixed oxides and mixed oxides-phosphates as steam cracking catalysts for enhanced yields of light olefins
Inventor(s): Choi, Jun-Seon; Kang, Jun-Han; Song, Jong-Hun; Park, Byoung-Gi; Kang, Chang-Hoon; Noh, Si-Hyun
Patent Assignee(s): LG Chem, Ltd., S. Korea; LG Petrochemical Co., Ltd.
Source: PCT Int. Appl., 21 pp. CODEN: PIXXD2
Language: English

Abstract:
Mixed oxide and phosphoric oxide catalysts are prepared and used to increase the yields of light alkenes (especially ethylene and propylene) from steam cracking of light hydrocarbons, especially light naphtha. The oxide and phosphoric oxide catalysts are of general formulas CrZrjAkOx and CrZrjAkPlOx, in which: (1) j is between 0.5 and 120, k is between 0 and 50 (for oxides), (2) j is between 0.1 and 50, k is bewtween 0 and 30, and l is between 0.5 and 100 (for phosphates), and (3) A is a transition metal selected from Ti, Nb, Mo, V, Co, Ni, W, Fe, and can include rare earth metals.  The metal precursors can be prepared from such precursors as sulfates, nitrates, oxalates, halides, chlorides, salts, acids, oxides, hydroxides, and alkoxides. Steam cracking is typically carried out at 600-1000 degrees, steam-hydrocarbon weight ratio 0.3-1.0:1, and space velocity 1-20 h-1.

View the full-text U.S. patent from USPTO.

 

Recent News

       
    March 17, 2015 | New Content Provides Regulatory
    Professionals with Additional Value
    
    February 9, 2015 | Major New STN Release Delivers
    Essential Biomedical and Patent Content to IP
    Professionals
    
    January 26, 2015
 | Annual MEDLINE Reload on STN
    Features Enhanced Clinical Trial Information and the
    2015 MeSH Thesaurus
                               
  
                                                                     More News >> 

 Media Contact

 Name: Rhonda Ross
 Phone: 614-447-3624                                       
 Email: cas-pr@cas.org