DOE Patents title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Carbon dioxide adsorbents containing magnesium oxide suitable for use at high temperatures

Abstract

Adsorption of carbon dioxide from gas streams at temperatures in the range of 300 to 500.degree. C. is carried out with a solid adsorbent containing magnesium oxide, preferably promoted with an alkali metal carbonate or bicarbonate so that the atomic ratio of alkali metal to magnesium is in the range of 0.006 to 2.60. Preferred adsorbents are made from the precipitate formed on addition of alkali metal and carbonate ions to an aqueous solution of a magnesium salt. Atomic ratios of alkali metal to magnesium can be adjusted by washing the precipitate with water. Low surface area adsorbents can be made by dehydration and CO.sub.2 removal of magnesium hydroxycarbonate, with or without alkali metal promotion. The process is especially valuable in pressure swing adsorption operations.

Inventors:
 [1];  [1];  [1];  [2]
  1. Allentown, PA
  2. Macungie, PA
Issue Date:
Research Org.:
Air Products and Chemicals, Inc. (Allentown, PA)
OSTI Identifier:
873949
Patent Number(s):
6280503
Assignee:
Air Products and Chemicals, Inc. (Allentown, PA)
Patent Classifications (CPCs):
B - PERFORMING OPERATIONS B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL B01D - SEPARATION
B - PERFORMING OPERATIONS B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL B01J - CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY
DOE Contract Number:  
FC36-95GO10059
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
carbon; dioxide; adsorbents; containing; magnesium; oxide; suitable; temperatures; adsorption; gas; streams; range; 300; 500; degree; carried; solid; adsorbent; preferably; promoted; alkali; metal; carbonate; bicarbonate; atomic; ratio; 006; 60; preferred; precipitate; formed; addition; aqueous; solution; salt; ratios; adjusted; washing; water; surface; dehydration; removal; hydroxycarbonate; promotion; process; especially; valuable; pressure; swing; operations; carbon dioxide; alkali metal; gas stream; aqueous solution; gas streams; magnesium oxide; pressure swing; swing adsorption; metal carbonate; solid adsorbent; metal carbon; atomic ratio; containing magnesium; especially valuable; oxide suitable; sorbent containing; /95/

Citation Formats

Mayorga, Steven Gerard, Weigel, Scott Jeffrey, Gaffney, Thomas Richard, and Brzozowski, Jeffrey Richard. Carbon dioxide adsorbents containing magnesium oxide suitable for use at high temperatures. United States: N. p., 2001. Web.
Mayorga, Steven Gerard, Weigel, Scott Jeffrey, Gaffney, Thomas Richard, & Brzozowski, Jeffrey Richard. Carbon dioxide adsorbents containing magnesium oxide suitable for use at high temperatures. United States.
Mayorga, Steven Gerard, Weigel, Scott Jeffrey, Gaffney, Thomas Richard, and Brzozowski, Jeffrey Richard. Mon . "Carbon dioxide adsorbents containing magnesium oxide suitable for use at high temperatures". United States. https://www.osti.gov/servlets/purl/873949.
@article{osti_873949,
title = {Carbon dioxide adsorbents containing magnesium oxide suitable for use at high temperatures},
author = {Mayorga, Steven Gerard and Weigel, Scott Jeffrey and Gaffney, Thomas Richard and Brzozowski, Jeffrey Richard},
abstractNote = {Adsorption of carbon dioxide from gas streams at temperatures in the range of 300 to 500.degree. C. is carried out with a solid adsorbent containing magnesium oxide, preferably promoted with an alkali metal carbonate or bicarbonate so that the atomic ratio of alkali metal to magnesium is in the range of 0.006 to 2.60. Preferred adsorbents are made from the precipitate formed on addition of alkali metal and carbonate ions to an aqueous solution of a magnesium salt. Atomic ratios of alkali metal to magnesium can be adjusted by washing the precipitate with water. Low surface area adsorbents can be made by dehydration and CO.sub.2 removal of magnesium hydroxycarbonate, with or without alkali metal promotion. The process is especially valuable in pressure swing adsorption operations.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2001},
month = {1}
}