Aluminum-calcium based three-component systems with addition of zinc and magnesium compounds for absorption of the hydrochloric acid vapor

Aluminum-calcium based three-component systems with addition of zinc and magnesium compounds for... To prepare granulated sorbents for absorption of the hydrochloric acid vapor, the formulations ZnO-CaO-Al(OH)3, Zn4CO3(OH)6-CaO-Al(OH)3, and MgO-CaO-Al(OH)3 with a 1: 1: 1 molar ratio of the oxides were studied. Mechanical processing of the mixtures leads to amorphization of compounds of the bivalent metals and to an increase in the size of gibbsite crystallites, accompanied by deformation of its crystal lattice. The composition of the chemisorbent has no effect on the number of basic surface centers, but determines the mechanical strength of grains and their absorbing capacity. The most promising formulation for preparing the chemisorbent is the Zn4(CO3(OH)6-CaO-Al(OH)3 system possessing the highest absorbing capacity for HCl vapor and retains its mechanical strength in tests. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Russian Journal of Applied Chemistry Springer Journals

Aluminum-calcium based three-component systems with addition of zinc and magnesium compounds for absorption of the hydrochloric acid vapor

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Publisher
Springer Journals
Copyright
Copyright © 2013 by Pleiades Publishing, Ltd.
Subject
Chemistry; Chemistry/Food Science, general; Industrial Chemistry/Chemical Engineering
ISSN
1070-4272
eISSN
1608-3296
D.O.I.
10.1134/S1070427213070148
Publisher site
See Article on Publisher Site

Abstract

To prepare granulated sorbents for absorption of the hydrochloric acid vapor, the formulations ZnO-CaO-Al(OH)3, Zn4CO3(OH)6-CaO-Al(OH)3, and MgO-CaO-Al(OH)3 with a 1: 1: 1 molar ratio of the oxides were studied. Mechanical processing of the mixtures leads to amorphization of compounds of the bivalent metals and to an increase in the size of gibbsite crystallites, accompanied by deformation of its crystal lattice. The composition of the chemisorbent has no effect on the number of basic surface centers, but determines the mechanical strength of grains and their absorbing capacity. The most promising formulation for preparing the chemisorbent is the Zn4(CO3(OH)6-CaO-Al(OH)3 system possessing the highest absorbing capacity for HCl vapor and retains its mechanical strength in tests.

Journal

Russian Journal of Applied ChemistrySpringer Journals

Published: Aug 28, 2013

References

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