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:
Nov. 13, 2012
Filed:
Dec. 02, 2011
Victor Johnston, Houston, TX (US);
Barabra Kimmich, Bernardsville, NJ (US);
Deborah Repman, Houston, TX (US);
James Zink, League City, TX (US);
Josefina Chapman, Houston, TX (US);
Laiyuan Chen, Houston, TX (US);
Victor Johnston, Houston, TX (US);
Barabra Kimmich, Bernardsville, NJ (US);
Deborah Repman, Houston, TX (US);
James Zink, League City, TX (US);
Josefina Chapman, Houston, TX (US);
Laiyuan Chen, Houston, TX (US);
Celanese International Corporation, Dallas, TX (US);
Abstract
This invention provides an integrated two stage economical process for the production of vinyl acetate monomer (VAM) from acetic acid in the vapor phase. First, acetic acid is selectively hydrogenated over a hydrogenating catalyst composition to form ethylene either in a single reactor zone or in a dual rector zone wherein the intermediate hydrogenated products are either dehydrated and/or cracked to form ethylene. In a subsequent second stage so formed ethylene is reacted with molecular oxygen and acetic acid over a suitable catalyst to form VAM. In an embodiment of this invention reaction of acetic acid and hydrogen over a hydrogenation catalyst and subsequent reaction over a dehydration catalyst selectively produces ethylene, which is further mixed with acetic acid and molecular oxygen and reacted over a supported palladium/gold/potassium catalyst.