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Title: Carbonation of metal silicates for long-term CO2 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:
; ; ;
Issue Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1128516
Patent Number(s):
8673256
Application Number:
13/361,215
Assignee:
UT-Battelle, LLC (Oak Ridge, TN); University of Tennessee Research Foundation (Knoxville, TN); Virginia Museum of Natural History (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:  
AC05-00OR22725
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 CO2 sequestration. United States: N. p., 2014. Web.
Blencoe, James G, Palmer, Donald A, Anovitz, Lawrence M, & Beard, James S. Carbonation of metal silicates for long-term CO2 sequestration. United States.
Blencoe, James G, Palmer, Donald A, Anovitz, Lawrence M, and Beard, James S. Tue . "Carbonation of metal silicates for long-term CO2 sequestration". United States. https://www.osti.gov/servlets/purl/1128516.
@article{osti_1128516,
title = {Carbonation of metal silicates for long-term CO2 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 = {2014},
month = {3}
}

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Works referenced in this record:

CO2 disposal by means of silicates
journal, June 1990


Progress on binding CO2 in mineral substrates
journal, January 1997


Carbon dioxide sequestration as stable carbonate minerals – environmental barriers
journal, August 2001


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


Magnesium Hydroxide Dehydroxylation/Carbonation Reaction Processes: Implications for Carbon Dioxide Mineral Sequestration
journal, April 2002


Feasibility of CO2 Fixation via Artificial Rock Weathering
journal, September 2001


A new CO2 disposal process via artificial weathering of calcium silicate accelerated by acetic acid
journal, April 2001


Absorption and fixation of carbon dioxide by rock weathering
journal, January 1997


Carbon dioxide disposal in carbonate minerals
journal, January 1995


A Guide to CO2 Sequestration
journal, June 2003