Interaction and stabilization of DMF-based alumina suspensions with citric acid

Lina Wu; Yudong Huang; Li Liu; Linghui Meng

doi:10.1016/j.powtec.2010.06.009

Interaction and stabilization of DMF-based alumina suspensions with citric acid

Lina Wu
, Yudong Huang^*
, Li Liu
, Linghui Meng

^*Corresponding author for this work

School of Chemistry and Chemical Engineering, Harbin Institute of Technology

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

8 Scopus citations

Abstract

The understanding of the detailed interaction between particles and dispersants in non-aqueous solutions is important for industrial applications. Herein, we report the investigation on the alumina suspension with citric acid in N,N'-dimethylformamide (DMF). The interaction was characterized by monitoring the evolution of UV-vis spectra, zeta potential values, and FT-IR spectra. The dispersion stability was examined by sedimentation test. It is found that the adsorption of citric acid on the surface of alumina particles depends on the apparent pH (pH_a) values of the solution. The adsorption follows the Langmuir type. The DMF-based alumina suspension exhibits a high stability due to the adsorption of citric acid on alumina particles, and shows the highest stability at pH_a 2.6 where the maximum adsorption occurs for citric acid.

Original language	English
Pages (from-to)	477-481
Number of pages	5
Journal	Powder Technology
Volume	203
Issue number	3
DOIs	https://doi.org/10.1016/j.powtec.2010.06.009
State	Published - Nov 2010
Externally published	Yes

Keywords

Alumina
Citric acid
Dispersion stability
Interaction
N,N'-dimethylformamide

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10.1016/j.powtec.2010.06.009

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title = "Interaction and stabilization of DMF-based alumina suspensions with citric acid",

abstract = "The understanding of the detailed interaction between particles and dispersants in non-aqueous solutions is important for industrial applications. Herein, we report the investigation on the alumina suspension with citric acid in N,N'-dimethylformamide (DMF). The interaction was characterized by monitoring the evolution of UV-vis spectra, zeta potential values, and FT-IR spectra. The dispersion stability was examined by sedimentation test. It is found that the adsorption of citric acid on the surface of alumina particles depends on the apparent pH (pHa) values of the solution. The adsorption follows the Langmuir type. The DMF-based alumina suspension exhibits a high stability due to the adsorption of citric acid on alumina particles, and shows the highest stability at pHa 2.6 where the maximum adsorption occurs for citric acid.",

keywords = "Alumina, Citric acid, Dispersion stability, Interaction, N,N'-dimethylformamide",

author = "Lina Wu and Yudong Huang and Li Liu and Linghui Meng",

year = "2010",

month = nov,

doi = "10.1016/j.powtec.2010.06.009",

language = "英语",

volume = "203",

pages = "477--481",

journal = "Powder Technology",

issn = "0032-5910",

publisher = "Elsevier B.V.",

number = "3",

}

TY - JOUR

T1 - Interaction and stabilization of DMF-based alumina suspensions with citric acid

AU - Wu, Lina

AU - Huang, Yudong

AU - Liu, Li

AU - Meng, Linghui

PY - 2010/11

Y1 - 2010/11

N2 - The understanding of the detailed interaction between particles and dispersants in non-aqueous solutions is important for industrial applications. Herein, we report the investigation on the alumina suspension with citric acid in N,N'-dimethylformamide (DMF). The interaction was characterized by monitoring the evolution of UV-vis spectra, zeta potential values, and FT-IR spectra. The dispersion stability was examined by sedimentation test. It is found that the adsorption of citric acid on the surface of alumina particles depends on the apparent pH (pHa) values of the solution. The adsorption follows the Langmuir type. The DMF-based alumina suspension exhibits a high stability due to the adsorption of citric acid on alumina particles, and shows the highest stability at pHa 2.6 where the maximum adsorption occurs for citric acid.

AB - The understanding of the detailed interaction between particles and dispersants in non-aqueous solutions is important for industrial applications. Herein, we report the investigation on the alumina suspension with citric acid in N,N'-dimethylformamide (DMF). The interaction was characterized by monitoring the evolution of UV-vis spectra, zeta potential values, and FT-IR spectra. The dispersion stability was examined by sedimentation test. It is found that the adsorption of citric acid on the surface of alumina particles depends on the apparent pH (pHa) values of the solution. The adsorption follows the Langmuir type. The DMF-based alumina suspension exhibits a high stability due to the adsorption of citric acid on alumina particles, and shows the highest stability at pHa 2.6 where the maximum adsorption occurs for citric acid.

KW - Alumina

KW - Citric acid

KW - Dispersion stability

KW - Interaction

KW - N,N'-dimethylformamide

UR - https://www.scopus.com/pages/publications/77955842055

U2 - 10.1016/j.powtec.2010.06.009

DO - 10.1016/j.powtec.2010.06.009

M3 - 文章

AN - SCOPUS:77955842055

SN - 0032-5910

VL - 203

SP - 477

EP - 481

JO - Powder Technology

JF - Powder Technology

IS - 3

ER -

Interaction and stabilization of DMF-based alumina suspensions with citric acid

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Keywords

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