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Title: Epoxidation catalyst and process

Abstract

Disclosed herein is a catalytic method of converting alkenes to epoxides. This method generally includes reacting alkenes with oxygen in the presence of a specific silver catalyst under conditions suitable to produce a yield of the epoxides. The specific silver catalyst is a silver nanocrystal having a plurality of surface planes, a substantial portion of which is defined by Miller indices of (100). The reaction is performed by charging a suitable reactor with this silver catalyst and then feeding the reactants to the reactor under conditions to carry out the reaction. The reaction may be performed in batch, or as a continuous process that employs a recycle of any unreacted alkenes. The specific silver catalyst has unexpectedly high selectivity for epoxide products. Consequently, this general method (and its various embodiments) will result in extraordinarily high epoxide yields heretofore unattainable.

Inventors:
 [1];  [1]
  1. Ann Arbor, MI
Issue Date:
Research Org.:
Univ. of Michigan, Ann Arbor, MI (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1015990
Patent Number(s):
7820840
Application Number:
12/498,942
Assignee:
The Regents of the University of Michigan (Ann Arbor, MI)
Patent Classifications (CPCs):
C - CHEMISTRY C07 - ORGANIC CHEMISTRY C07D - HETEROCYCLIC COMPOUNDS
DOE Contract Number:  
FG02-05ER15686
Resource Type:
Patent
Country of Publication:
United States
Language:
English

Citation Formats

Linic, Suljo, and Christopher, Phillip. Epoxidation catalyst and process. United States: N. p., 2010. Web.
Linic, Suljo, & Christopher, Phillip. Epoxidation catalyst and process. United States.
Linic, Suljo, and Christopher, Phillip. Tue . "Epoxidation catalyst and process". United States. https://www.osti.gov/servlets/purl/1015990.
@article{osti_1015990,
title = {Epoxidation catalyst and process},
author = {Linic, Suljo and Christopher, Phillip},
abstractNote = {Disclosed herein is a catalytic method of converting alkenes to epoxides. This method generally includes reacting alkenes with oxygen in the presence of a specific silver catalyst under conditions suitable to produce a yield of the epoxides. The specific silver catalyst is a silver nanocrystal having a plurality of surface planes, a substantial portion of which is defined by Miller indices of (100). The reaction is performed by charging a suitable reactor with this silver catalyst and then feeding the reactants to the reactor under conditions to carry out the reaction. The reaction may be performed in batch, or as a continuous process that employs a recycle of any unreacted alkenes. The specific silver catalyst has unexpectedly high selectivity for epoxide products. Consequently, this general method (and its various embodiments) will result in extraordinarily high epoxide yields heretofore unattainable.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Oct 26 00:00:00 EDT 2010},
month = {Tue Oct 26 00:00:00 EDT 2010}
}

Works referenced in this record:

Adsorption of ethylene on stepped Ag() surfaces
journal, September 2004


Mechanism, Selectivity Promotion, and New Ultraselective Pathways in Ag-Catalyzed Heterogeneous Epoxidation
journal, July 2004


Shape-Dependent Catalytic Activity of Silver Nanoparticles for the Oxidation of Styrene
journal, December 2006


Shape-Controlled Synthesis of Gold and Silver Nanoparticles
journal, December 2002


Structure Sensitivity of the Catalytic Oxidation of Ethene by Silver
journal, December 1987