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Title: Carbonation of metal silicates for long-term CO.sub.2 sequestration

Abstract

In a preferred embodiment, the invention relates to a process of sequestering carbon dioxide. The process comprises the steps of: (a) reacting a metal silicate with a caustic alkali-metal hydroxide to produce a hydroxide of the metal formerly contained in the silicate; (b) reacting carbon dioxide with at least one of a caustic alkali-metal hydroxide and an alkali-metal silicate to produce at least one of an alkali-metal carbonate and an alkali-metal bicarbonate; and (c) reacting the metal hydroxide product of step (a) with at least one of the alkali-metal carbonate and the alkali-metal bicarbonate produced in step (b) to produce a carbonate of the metal formerly contained in the metal silicate of step (a).

Inventors:
 [1];  [2];  [3];  [4]
  1. Harriman, TN
  2. Oliver Springs, TN
  3. Knoxville, TN
  4. Martinsville, VA
Issue Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1036993
Patent Number(s):
8114374
Application Number:
12/016,098
Assignee:
U.T. Battelle, LLC. (Oak Ridge, TN); University of Tennessee Research Foundation (Knoxville, TN); Virginia Museum of Natrual History Foundation (Martinsville, VA)
Patent Classifications (CPCs):
C - CHEMISTRY C01 - INORGANIC CHEMISTRY C01F - COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
B - PERFORMING OPERATIONS B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL B01D - SEPARATION
DOE Contract Number:  
AC05-000R22725
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY

Citation Formats

Blencoe, James G, Palmer, Donald A, Anovitz, Lawrence M, and Beard, James S. Carbonation of metal silicates for long-term CO.sub.2 sequestration. United States: N. p., 2012. Web.
Blencoe, James G, Palmer, Donald A, Anovitz, Lawrence M, & Beard, James S. Carbonation of metal silicates for long-term CO.sub.2 sequestration. United States.
Blencoe, James G, Palmer, Donald A, Anovitz, Lawrence M, and Beard, James S. Tue . "Carbonation of metal silicates for long-term CO.sub.2 sequestration". United States. https://www.osti.gov/servlets/purl/1036993.
@article{osti_1036993,
title = {Carbonation of metal silicates for long-term CO.sub.2 sequestration},
author = {Blencoe, James G and Palmer, Donald A and Anovitz, Lawrence M and Beard, James S},
abstractNote = {In a preferred embodiment, the invention relates to a process of sequestering carbon dioxide. The process comprises the steps of: (a) reacting a metal silicate with a caustic alkali-metal hydroxide to produce a hydroxide of the metal formerly contained in the silicate; (b) reacting carbon dioxide with at least one of a caustic alkali-metal hydroxide and an alkali-metal silicate to produce at least one of an alkali-metal carbonate and an alkali-metal bicarbonate; and (c) reacting the metal hydroxide product of step (a) with at least one of the alkali-metal carbonate and the alkali-metal bicarbonate produced in step (b) to produce a carbonate of the metal formerly contained in the metal silicate of step (a).},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2012},
month = {2}
}

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Works referenced in this record:

Mitigation of CO2 by Chemical Conversion:  Plausible Chemical Reactions and Promising Products
journal, March 1996


Carbon Dioxide Sequestering Using Ultramaf ic Rocks
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Progress on binding CO2 in mineral substrates
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Carbon dioxide sequestration as stable carbonate minerals – environmental barriers
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Kinetics and Mechanism of Carbonation of Magnesium Oxide Slurries
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Feasibility of CO2 Fixation via Artificial Rock Weathering
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A new CO2 disposal process via artificial weathering of calcium silicate accelerated by acetic acid
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Magnesium Hydroxide Dehydroxylation/Carbonation Reaction Processes: Implications for Carbon Dioxide Mineral Sequestration
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Absorption and fixation of carbon dioxide by rock weathering
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CO2 disposal by means of silicates
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Carbon dioxide disposal in carbonate minerals
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