The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 01, 2003
Filed:
Jul. 12, 2001
Jan Mattheus Botha, Sasolburg, ZA;
Muzikayise Mthokozisi Justice Mbatha, Zamdela, ZA;
Bongani Simon Nkosi, Sasolburg, ZA;
Alta Spamer, Vanderoijlpark, ZA;
Joan Swart, Vaalpark, ZA;
Sasol Technology (Proprietary) Limited, Sasolburg, ZA;
Abstract
The invention provides a process for the production of propylene by butene metathesis. The process includes contacting a feedstock, which contains butene selected from 1-butene, 2-butene and mixtures thereof, with a catalyst which includes a catalytic amount of at least one metal oxide selected from oxides of the transition metals. The contacting is under reaction conditions which include a temperature of 300-600 øC. and a pressure of 1 20 atmospheres, and converts the butene to propylene, thereby to produce a reaction product containing propylene. C — and higher hydrocarbons produced by the metathesis are separated from the reaction product and are recycled to the reaction where they are contacted with the catalyst.