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Title: Biomimetic Catalysts for the Conversion of Methane to Methanol Final Report CRADA No. TC-548-93

Abstract

A select group of aerobic soil/water bacteria called methanotrophs can efficiently and selectively utilize methane as the sole source of their energy and carbon for cellular growth. The first reaction in this metabolic pathway is catalyzed by the enzyme methane monooxygenase (MMO) forming methanol. The active site of MMO consists of a binuclear metal center with the metals joined by a m-oxo bridge. The Lawrence Livermore National Laboratory has developed a ligand that will bind two metals with a pseudo m-oxo bridge. The synthesis and properties of a number of copper and iron complexes have been synthesized by LLNL and several of these materials show weak catalytic activity for the oxidation of hydrocarbons. This project was needed to take these ideas/materials developed at LLNL from intellectual curiosities to commercial products. LLNL’s experience in biochemistry of the MMO enzyme system and synthesis of new, non-biological enzyme analogues was required for this project. This project is directed at using the information learned about the structure/function of the MMO enzyme to direct the synthesis, characterization, and chemical reactions of discrete complexes that mimic the enzymatic active site. These complexes will be synthesized based on our best current understanding of the MMO active sitemore » structure and will be systematically modified as new information concerning the MMO site is obtained. These new catalyst materials will be experimentally tested and optimized for methane partial oxidation. The project's desired products are synthetic catalysts that will perform the selective oxidation of methane directly to methanol. These catalysts should be robust enough to survive in commercial catalyst reactors.« less

Authors:
 [1];  [2]
  1. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
  2. Amoco Corp., Naperville, IL (United States)
Publication Date:
Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States); Amoco Corp., Naperville, IL (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1438794
Report Number(s):
LLNL-TR-748517
DOE Contract Number:  
AC52-07NA27344
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; 03 NATURAL GAS

Citation Formats

Watkins, Bruce, and Udovich, Carl A. Biomimetic Catalysts for the Conversion of Methane to Methanol Final Report CRADA No. TC-548-93. United States: N. p., 1995. Web. doi:10.2172/1438794.
Watkins, Bruce, & Udovich, Carl A. Biomimetic Catalysts for the Conversion of Methane to Methanol Final Report CRADA No. TC-548-93. United States. doi:10.2172/1438794.
Watkins, Bruce, and Udovich, Carl A. Mon . "Biomimetic Catalysts for the Conversion of Methane to Methanol Final Report CRADA No. TC-548-93". United States. doi:10.2172/1438794. https://www.osti.gov/servlets/purl/1438794.
@article{osti_1438794,
title = {Biomimetic Catalysts for the Conversion of Methane to Methanol Final Report CRADA No. TC-548-93},
author = {Watkins, Bruce and Udovich, Carl A.},
abstractNote = {A select group of aerobic soil/water bacteria called methanotrophs can efficiently and selectively utilize methane as the sole source of their energy and carbon for cellular growth. The first reaction in this metabolic pathway is catalyzed by the enzyme methane monooxygenase (MMO) forming methanol. The active site of MMO consists of a binuclear metal center with the metals joined by a m-oxo bridge. The Lawrence Livermore National Laboratory has developed a ligand that will bind two metals with a pseudo m-oxo bridge. The synthesis and properties of a number of copper and iron complexes have been synthesized by LLNL and several of these materials show weak catalytic activity for the oxidation of hydrocarbons. This project was needed to take these ideas/materials developed at LLNL from intellectual curiosities to commercial products. LLNL’s experience in biochemistry of the MMO enzyme system and synthesis of new, non-biological enzyme analogues was required for this project. This project is directed at using the information learned about the structure/function of the MMO enzyme to direct the synthesis, characterization, and chemical reactions of discrete complexes that mimic the enzymatic active site. These complexes will be synthesized based on our best current understanding of the MMO active site structure and will be systematically modified as new information concerning the MMO site is obtained. These new catalyst materials will be experimentally tested and optimized for methane partial oxidation. The project's desired products are synthetic catalysts that will perform the selective oxidation of methane directly to methanol. These catalysts should be robust enough to survive in commercial catalyst reactors.},
doi = {10.2172/1438794},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1995},
month = {11}
}

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