Determination of nucleation kinetics of cobalt sulfate by measuring metastable zone width and induction time in pure and sulfuric acid solution

Jianxin Zhang; Marjatta Louhi-Kultanen

doi:10.1016/j.powtec.2023.118463

Determination of nucleation kinetics of cobalt sulfate by measuring metastable zone width and induction time in pure and sulfuric acid solution

Jianxin Zhang, Marjatta Louhi-Kultanen^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › Scientific › peer-review

9 Citations (Scopus)

303 Downloads (Pure)

Abstract

The metastable zone width (MSZW) and induction time of CoSO₄ in the presence of H₂SO₄ were measured at various operating conditions by polythermal and isothermal methods, respectively. Raman spectroscopy and UV–Vis have been successfully adopted for measuring the solubility of CoSO_4. The nucleation parameters were estimated with a self-consistent Nývlt-like approach and classical 3D theory approach. The results show a decrease in the solubility of CoSO₄ with an increase in the concentration of H₂SO₄. MSZW decreased when raising the saturation temperature, mixing speed, and H₂SO₄ concentration, and decreasing the cooling rate. The induction time measurement indicated that the system showed homogeneous nucleation at high supersaturation (>1.15) and heterogeneous nucleation at low supersaturation (<1.15). The crystallized product was CoSO₄⋅7H₂O which has an octahedron shape and cubic shape with and without H₂SO₄, respectively. Moreover, the particle sizes are smaller with increased H₂SO₄ concentration and cooling rate.

Original language	English
Article number	118463
Number of pages	12
Journal	Powder Technology
Volume	422
Early online date	29 Mar 2023
DOIs	https://doi.org/10.1016/j.powtec.2023.118463
Publication status	Published - 15 May 2023
MoE publication type	A1 Journal article-refereed

Funding

Zhang Jianxin wishes to acknowledge the funding from CSC, China (China Scholarship Council, No. 201806370220). The authors would also like to thank Chemobrionics COST Action CA17120, Belgium. This work made use of Aalto University Bioeconomy and RawMatters Facilities. Zhang Jianxin wishes to acknowledge the funding from CSC, China ( China Scholarship Council , No. 201806370220 ). The authors would also like to thank Chemobrionics COST Action CA17120, Belgium . This work made use of Aalto University Bioeconomy and RawMatters Facilities.

Keywords

Cobalt sulfate
Induction time
Metastable zone width
Nucleation kinetics
Solubility
Sulfuric acid

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1016/j.powtec.2023.118463Licence: CC BY

CHEM_Zhang_and_Louhi-Kultanen_Determination_of_nucleation_2023_Powder_TechnologyFinal published version, 5.34 MBLicence: CC BY

Cite this

@article{0f204c09bfec418ca951305805bf5c85,

title = "Determination of nucleation kinetics of cobalt sulfate by measuring metastable zone width and induction time in pure and sulfuric acid solution",

abstract = "The metastable zone width (MSZW) and induction time of CoSO4 in the presence of H2SO4 were measured at various operating conditions by polythermal and isothermal methods, respectively. Raman spectroscopy and UV–Vis have been successfully adopted for measuring the solubility of CoSO4. The nucleation parameters were estimated with a self-consistent N{\'y}vlt-like approach and classical 3D theory approach. The results show a decrease in the solubility of CoSO4 with an increase in the concentration of H2SO4. MSZW decreased when raising the saturation temperature, mixing speed, and H2SO4 concentration, and decreasing the cooling rate. The induction time measurement indicated that the system showed homogeneous nucleation at high supersaturation (>1.15) and heterogeneous nucleation at low supersaturation (<1.15). The crystallized product was CoSO4⋅7H2O which has an octahedron shape and cubic shape with and without H2SO4, respectively. Moreover, the particle sizes are smaller with increased H2SO4 concentration and cooling rate.",

keywords = "Cobalt sulfate, Induction time, Metastable zone width, Nucleation kinetics, Solubility, Sulfuric acid",

author = "Jianxin Zhang and Marjatta Louhi-Kultanen",

note = "Funding Information: Zhang Jianxin wishes to acknowledge the funding from CSC, China (China Scholarship Council, No. 201806370220). The authors would also like to thank Chemobrionics COST Action CA17120, Belgium. This work made use of Aalto University Bioeconomy and RawMatters Facilities.",

year = "2023",

month = may,

day = "15",

doi = "10.1016/j.powtec.2023.118463",

language = "English",

volume = "422",

journal = "Powder Technology",

issn = "0032-5910",

publisher = "Elsevier",

}

TY - JOUR

T1 - Determination of nucleation kinetics of cobalt sulfate by measuring metastable zone width and induction time in pure and sulfuric acid solution

AU - Zhang, Jianxin

AU - Louhi-Kultanen, Marjatta

N1 - Funding Information: Zhang Jianxin wishes to acknowledge the funding from CSC, China (China Scholarship Council, No. 201806370220). The authors would also like to thank Chemobrionics COST Action CA17120, Belgium. This work made use of Aalto University Bioeconomy and RawMatters Facilities.

PY - 2023/5/15

Y1 - 2023/5/15

N2 - The metastable zone width (MSZW) and induction time of CoSO4 in the presence of H2SO4 were measured at various operating conditions by polythermal and isothermal methods, respectively. Raman spectroscopy and UV–Vis have been successfully adopted for measuring the solubility of CoSO4. The nucleation parameters were estimated with a self-consistent Nývlt-like approach and classical 3D theory approach. The results show a decrease in the solubility of CoSO4 with an increase in the concentration of H2SO4. MSZW decreased when raising the saturation temperature, mixing speed, and H2SO4 concentration, and decreasing the cooling rate. The induction time measurement indicated that the system showed homogeneous nucleation at high supersaturation (>1.15) and heterogeneous nucleation at low supersaturation (<1.15). The crystallized product was CoSO4⋅7H2O which has an octahedron shape and cubic shape with and without H2SO4, respectively. Moreover, the particle sizes are smaller with increased H2SO4 concentration and cooling rate.

AB - The metastable zone width (MSZW) and induction time of CoSO4 in the presence of H2SO4 were measured at various operating conditions by polythermal and isothermal methods, respectively. Raman spectroscopy and UV–Vis have been successfully adopted for measuring the solubility of CoSO4. The nucleation parameters were estimated with a self-consistent Nývlt-like approach and classical 3D theory approach. The results show a decrease in the solubility of CoSO4 with an increase in the concentration of H2SO4. MSZW decreased when raising the saturation temperature, mixing speed, and H2SO4 concentration, and decreasing the cooling rate. The induction time measurement indicated that the system showed homogeneous nucleation at high supersaturation (>1.15) and heterogeneous nucleation at low supersaturation (<1.15). The crystallized product was CoSO4⋅7H2O which has an octahedron shape and cubic shape with and without H2SO4, respectively. Moreover, the particle sizes are smaller with increased H2SO4 concentration and cooling rate.

KW - Cobalt sulfate

KW - Induction time

KW - Metastable zone width

KW - Nucleation kinetics

KW - Solubility

KW - Sulfuric acid

UR - https://www.scopus.com/pages/publications/85151234368

U2 - 10.1016/j.powtec.2023.118463

DO - 10.1016/j.powtec.2023.118463

M3 - Article

AN - SCOPUS:85151234368

SN - 0032-5910

VL - 422

JO - Powder Technology

JF - Powder Technology

M1 - 118463

ER -

Determination of nucleation kinetics of cobalt sulfate by measuring metastable zone width and induction time in pure and sulfuric acid solution

Abstract

Funding

Keywords

UN SDGs

Access to Document

Other files and links

Fingerprint

Bioeconomy Research Infrastructure

Raw Materials Research Infrastructure

Cite this

Determination of nucleation kinetics of cobalt sulfate by measuring metastable zone width and induction time in pure and sulfuric acid solution

Abstract

Funding

Keywords

UN SDGs

Access to Document

Other files and links

Fingerprint

Equipment

Bioeconomy Research Infrastructure

Raw Materials Research Infrastructure

Cite this