Optimizing the Technology of Titanium Phosphate Adsorbent Synthesis from Sulfate-Containing Titanium(IV) Solutions View Full Text


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Article Info

DATE

2018-09

AUTHORS

L. G. Gerasimova, E. S. Shchukina, M. V. Maslova, A. I. Nikolaev, Yu. V. Pleshakov

ABSTRACT

An important state in the technology of a compositional silicon-containing titanium phosphate adsorbent is studied. The conditions of washing of the adsorbent precursor obtained from a sulfate-containing titanium(IV) solution with an addition of sodium silicate by combining it with orthophosphoric acid are studied in relation to the technical and sorption characteristics of the prepared granulated adsorbent. The washing scheme combining the treatment of precursor by water and alkaline solutions ensures removal of the acidic mother liquor from the precursor while it is still on the filter. The developed washing scheme defines the sequence of applying the washing solutions and their quantities and enables us to control the extent of hydrolysis of the solid phase, limit the loss of amorphous silica from the titanium phosphate matrix, and create a desired pore system on the particle surfaces. By optimizing the washing conditions for the silicon-containing titanium phosphate precursor, we gain better control over the preparation of the target granulated product with the required performance and sorption characteristics. As a result, the technological effectiveness of the process is improved due to shorter process duration and a nearly triple reduction in the required amount of the washing waters. More... »

PAGES

903-908

Identifiers

URI

http://scigraph.springernature.com/pub.10.1134/s0040579518050123

DOI

http://dx.doi.org/10.1134/s0040579518050123

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1109782443


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