Kinetics of replacement reaction between potassium chloride and sodium pentaborate for preparing potassium pentaborate

Jin Ping Zhang; Yong Sun; Gang Yang; Zuo Hu Li

Kinetics of replacement reaction between potassium chloride and sodium pentaborate for preparing potassium pentaborate

Jin Ping Zhang, Yong Sun, Gang Yang, Zuo Hu Li

Research output: Journal Publication › Article › peer-review

Abstract

The preparation method of potassium pentaborate (KB₅O₈) was studied with the replacement reaction between potassium chloride and sodium pentaborate solution. The effects of sodium pentaborate concentration, reaction temperature and reactant mole ratio (KCl:NaB₅O₈) on the crystallization rate of KB₅O₈ were investigated. The results show that sodium pentaborate concentration is the most influential factor for affecting the reaction, while reaction temperature and reactant mole ratio (KCl:NaB₅O₈) are secondary factors. The reaction kinetics was studied by selecting control-step method as well as modified Debye-Hückel activity coefficient model and Bromley osmotic coefficient model. The results show that the reaction order is 2 and apparent reaction activation energy 85.8 kJ/mol, and the reaction is mainly controlled by precipitation of KB₅O₈ · 4H₂O.

Original language	English
Pages (from-to)	934-938
Number of pages	5
Journal	Guocheng Gongcheng Xuebao/The Chinese Journal of Process Engineering
Volume	7
Issue number	5
Publication status	Published - Oct 2007
Externally published	Yes

Keywords

Potassium chloride
Potassium pentaborate
Reaction kinetics
Replacement reaction
Sodium pentaborate

ASJC Scopus subject areas

General Chemical Engineering
Industrial and Manufacturing Engineering

Cite this

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title = "Kinetics of replacement reaction between potassium chloride and sodium pentaborate for preparing potassium pentaborate",

abstract = "The preparation method of potassium pentaborate (KB5O8) was studied with the replacement reaction between potassium chloride and sodium pentaborate solution. The effects of sodium pentaborate concentration, reaction temperature and reactant mole ratio (KCl:NaB5O8) on the crystallization rate of KB5O8 were investigated. The results show that sodium pentaborate concentration is the most influential factor for affecting the reaction, while reaction temperature and reactant mole ratio (KCl:NaB5O8) are secondary factors. The reaction kinetics was studied by selecting control-step method as well as modified Debye-H{\"u}ckel activity coefficient model and Bromley osmotic coefficient model. The results show that the reaction order is 2 and apparent reaction activation energy 85.8 kJ/mol, and the reaction is mainly controlled by precipitation of KB5O8 · 4H2O.",

keywords = "Potassium chloride, Potassium pentaborate, Reaction kinetics, Replacement reaction, Sodium pentaborate",

author = "Zhang, {Jin Ping} and Yong Sun and Gang Yang and Li, {Zuo Hu}",

year = "2007",

month = oct,

language = "English",

volume = "7",

pages = "934--938",

journal = "Guocheng Gongcheng Xuebao/The Chinese Journal of Process Engineering",

issn = "1009-606X",

publisher = "Science Press",

number = "5",

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TY - JOUR

T1 - Kinetics of replacement reaction between potassium chloride and sodium pentaborate for preparing potassium pentaborate

AU - Zhang, Jin Ping

AU - Sun, Yong

AU - Yang, Gang

AU - Li, Zuo Hu

PY - 2007/10

Y1 - 2007/10

N2 - The preparation method of potassium pentaborate (KB5O8) was studied with the replacement reaction between potassium chloride and sodium pentaborate solution. The effects of sodium pentaborate concentration, reaction temperature and reactant mole ratio (KCl:NaB5O8) on the crystallization rate of KB5O8 were investigated. The results show that sodium pentaborate concentration is the most influential factor for affecting the reaction, while reaction temperature and reactant mole ratio (KCl:NaB5O8) are secondary factors. The reaction kinetics was studied by selecting control-step method as well as modified Debye-Hückel activity coefficient model and Bromley osmotic coefficient model. The results show that the reaction order is 2 and apparent reaction activation energy 85.8 kJ/mol, and the reaction is mainly controlled by precipitation of KB5O8 · 4H2O.

AB - The preparation method of potassium pentaborate (KB5O8) was studied with the replacement reaction between potassium chloride and sodium pentaborate solution. The effects of sodium pentaborate concentration, reaction temperature and reactant mole ratio (KCl:NaB5O8) on the crystallization rate of KB5O8 were investigated. The results show that sodium pentaborate concentration is the most influential factor for affecting the reaction, while reaction temperature and reactant mole ratio (KCl:NaB5O8) are secondary factors. The reaction kinetics was studied by selecting control-step method as well as modified Debye-Hückel activity coefficient model and Bromley osmotic coefficient model. The results show that the reaction order is 2 and apparent reaction activation energy 85.8 kJ/mol, and the reaction is mainly controlled by precipitation of KB5O8 · 4H2O.

KW - Potassium chloride

KW - Potassium pentaborate

KW - Reaction kinetics

KW - Replacement reaction

KW - Sodium pentaborate

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M3 - Article

AN - SCOPUS:35948955151

SN - 1009-606X

VL - 7

SP - 934

EP - 938

JO - Guocheng Gongcheng Xuebao/The Chinese Journal of Process Engineering

JF - Guocheng Gongcheng Xuebao/The Chinese Journal of Process Engineering

IS - 5

ER -

Kinetics of replacement reaction between potassium chloride and sodium pentaborate for preparing potassium pentaborate

Abstract

Keywords

ASJC Scopus subject areas

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