Effect of base addition rate on the preparation of partially neutralized ferric chloride solutions

Ta Kang Liu; Edward S.K. Chian

doi:10.1016/j.jcis.2004.10.064

Effect of base addition rate on the preparation of partially neutralized ferric chloride solutions

Ta Kang Liu, Edward S.K. Chian

Institute of Ocean Technology and Marine Affairs

Research output: Contribution to journal › Article

9 Citations (Scopus)

Abstract

Cationic polymers prepared from partially neutralized ferric chloride solutions were investigated using photon correlation spectroscopy (PCS) techniques. To study the speciation and yield of the polymers, FeCl₃ solutions were hydrolyzed by adding NaHCO₃ solution for a range of hydrolysis ratios (B=[OH]/FeT) of 0 to 2.0 under different base addition rates. It was observed that the prepared solution has a higher degree of polymerization at a higher base addition rate. The "B rate" (R_B, 1/time), i.e., the rate of change of B during preparation, was found to have a dramatic effect on the speciation of the partially neutralized ferric chloride solution. High-yield inorganic iron(III) polymer (∼80%) can be produced in a specific range of B rates. These iron(III) polymers, having a size ranging from 3 to 7 nm, were stable without precipitation of ferric hydroxide microcolloids after aging for 2 weeks.

Original language	English
Pages (from-to)	542-547
Number of pages	6
Journal	Journal of Colloid And Interface Science
Volume	284
Issue number	2
DOIs	https://doi.org/10.1016/j.jcis.2004.10.064
Publication status	Published - 2005 Apr 15

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Biomaterials
Surfaces, Coatings and Films
Colloid and Surface Chemistry

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Liu, T. K., & Chian, E. S. K. (2005). Effect of base addition rate on the preparation of partially neutralized ferric chloride solutions. Journal of Colloid And Interface Science, 284(2), 542-547. https://doi.org/10.1016/j.jcis.2004.10.064

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abstract = "Cationic polymers prepared from partially neutralized ferric chloride solutions were investigated using photon correlation spectroscopy (PCS) techniques. To study the speciation and yield of the polymers, FeCl3 solutions were hydrolyzed by adding NaHCO3 solution for a range of hydrolysis ratios (B=[OH]/FeT) of 0 to 2.0 under different base addition rates. It was observed that the prepared solution has a higher degree of polymerization at a higher base addition rate. The {"}B rate{"} (RB, 1/time), i.e., the rate of change of B during preparation, was found to have a dramatic effect on the speciation of the partially neutralized ferric chloride solution. High-yield inorganic iron(III) polymer (∼80%) can be produced in a specific range of B rates. These iron(III) polymers, having a size ranging from 3 to 7 nm, were stable without precipitation of ferric hydroxide microcolloids after aging for 2 weeks.",

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AU - Chian, Edward S.K.

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N2 - Cationic polymers prepared from partially neutralized ferric chloride solutions were investigated using photon correlation spectroscopy (PCS) techniques. To study the speciation and yield of the polymers, FeCl3 solutions were hydrolyzed by adding NaHCO3 solution for a range of hydrolysis ratios (B=[OH]/FeT) of 0 to 2.0 under different base addition rates. It was observed that the prepared solution has a higher degree of polymerization at a higher base addition rate. The "B rate" (RB, 1/time), i.e., the rate of change of B during preparation, was found to have a dramatic effect on the speciation of the partially neutralized ferric chloride solution. High-yield inorganic iron(III) polymer (∼80%) can be produced in a specific range of B rates. These iron(III) polymers, having a size ranging from 3 to 7 nm, were stable without precipitation of ferric hydroxide microcolloids after aging for 2 weeks.

AB - Cationic polymers prepared from partially neutralized ferric chloride solutions were investigated using photon correlation spectroscopy (PCS) techniques. To study the speciation and yield of the polymers, FeCl3 solutions were hydrolyzed by adding NaHCO3 solution for a range of hydrolysis ratios (B=[OH]/FeT) of 0 to 2.0 under different base addition rates. It was observed that the prepared solution has a higher degree of polymerization at a higher base addition rate. The "B rate" (RB, 1/time), i.e., the rate of change of B during preparation, was found to have a dramatic effect on the speciation of the partially neutralized ferric chloride solution. High-yield inorganic iron(III) polymer (∼80%) can be produced in a specific range of B rates. These iron(III) polymers, having a size ranging from 3 to 7 nm, were stable without precipitation of ferric hydroxide microcolloids after aging for 2 weeks.

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