US 7,935,654 B2 · Oxide catalyst and phosphoric oxide catalyst for hydrocarbon steam cracking, method for preparing the same and method for preparing olefin by using the same

Abstract

The present invention relates to an oxide catalyst and a phosphoric oxide catalyst for hydrocarbon steam cracking, method for preparing the same and a method for preparing olefin by using the same. More precisely, the present invention relates to an oxide catalyst for hydrocarbon steam cracking represented by formula 1 and a phosphoric oxide catalyst for hydrocarbon steam cracking represented by formula 3 which would be used for the production of olefin such as ethylene and propylene by hydrocarbon steam cracking, and a method for preparing the same. The present invention provides an oxide catalyst and a phosphoric oxide catalyst for hydrocarbon steam cracking that has excellent thermo-stability at high temperature and improved olefin yield. CrZrjAkOx [Formula 1] CrZrjAkPlOx [Formula 3] Wherein, j, k, l and x are as indicated in the description.

Claims4

Dependent claims

An oxide catalyst for hydrocarbon steam cracking represented by formula 1,

CrZrjAkOx [Formula 1]
wherein, 0.5≦j≦120, 5≦k≦30, A is a transition metal, and x is a number corresponding to the atomic values of Cr, Zr and A and the numbers of j and k.

Dependencies are inferred from the claim text.

Facts

Application

11/902,665Filed 24 Sep 2007

Priority

KR 10-2006-009462028 Sep 2006

Published

US 2008/0081008 A13 Apr 2008

Granted

3 May 2011

Term ends

Not estimatedThe source records don’t support an estimate.

Classification18 codes

B01J 27/188
With arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium: with…
B01J 23/002
Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00: mixed oxides other than spinels, e.g. perovskite
B01J 23/26
Chromium, molybdenum or tungsten: chromium
B01J 37/03
Impregnation, coating or precipitation: precipitation; Co-precipitation

Oxide catalyst and phosphoric oxide catalyst for hydrocarbon steam cracking, method for preparing the same and method for preparing olefin by using the same

Life of this patent

Oxide catalyst and phosphoric oxide catalyst for hydrocarbon steam cracking, method for preparing the same and method for preparing olefin by using the same

Life of this patent

Abstract

Claims4