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:
Oct. 31, 2023
Filed:
Nov. 29, 2017
Shell Oil Company, Houston, TX (US);
Marek Matusz, Houston, TX (US);
Robert Lewis Paddock, Houston, TX (US);
Randall Clayton Yeates, Sugar Land, TX (US);
John Robert Lockemeyer, Sugar Land, TX (US);
SHELL USA, INC., Houston, TX (US);
Abstract
Methods for conditioning an ethylene epoxidation catalyst are provided. The conditioning methods comprise contacting an ethylene epoxidation catalyst comprising a carrier, having silver and a rhenium promoter deposited thereon, with a conditioning feed gas comprising oxygen for a period of time of at least 2 hours at a temperature that is above 180° C. and at most 250° C., wherein the contacting of the ethylene epoxidation catalyst with the conditioning feed gas occurs in an epoxidation reactor and in the absence of ethylene. Associated methods for the epoxidation of ethylene are also provided.