Transformation behavior of gibbsite to boehmite by steam-assisted synthesis

被引：14

作者：

Chen, Bo ^{[1
]}

Xu, Xisheng ^{[1
]}

Chen, Xiaoming ^{[1
]}

Kong, Lingjun ^{[2
,3
]}

Chen, Diyun ^{[2
,3
]}

机构：

[1] Nanjing Univ, Sch Earth Sci & Engn, State Key Lab Mineral Deposits Res, Nanjing 210023, Jiangsu, Peoples R China

[2] Guangzhou Univ, Sch Environm Sci & Engn, Guangzhou 510275, Guangdong, Peoples R China

[3] Guangzhou Univ, Guangdong Prov Key Lab Radioact Contaminat Contro, Guangzhou 510275, Guangdong, Peoples R China

来源：

JOURNAL OF SOLID STATE CHEMISTRY | 2018年 / 265卷

基金：

中国国家自然科学基金;

关键词：

Gibbsite; Boehmite; Dissolution-precipitation; Water stream; DRY-GEL CONVERSION; HYDROTHERMAL SYNTHESIS; CRYSTALLIZATION; KINETICS; PHASE; PRECIPITATION; ADSORPTION; ZEOLITES; ALUMINA; SOL;

D O I：

10.1016/j.jssc.2018.06.010

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Conversion of gibbsite to boehmite as a precursor for many aluminum oxide materials was widely concerned. Herein, the steam-assisted crystallization (SAC) method was conducted to synthesis the boehmite from gibbsite. The transformation behavior of gibbsite to boehmite treated at 155, 165, 175, and 185 degrees C by SAC method was studied by XRD and SEM analysis. The treated temperature and time were the main factor determining the transformation of morphologies and crystal phase of gibbsite to boehmite. Boehmite was appeared at 165 degrees C and 12 h for the SAC method but at 175 degrees C and 12 h for the hydrothermal method. Lower temperature and less time were required for conversion of gibbsite to boehmite by SAC compared to hydrothermal method. The advantageous transformation of gibbsite to boehmite is ascribed to the steam activation. Thus, a novel and effective SAC method was presented to synthesis of boehmite from gibbsite.

引用

页码：237 / 243

页数：7

共 29 条

[1] Boehmite (γ-AlOOH) nanoparticles: Hydrothermal synthesis, characterization, pH-controlled morphologies, optical properties, and DFT calculations [J].

Alemi, Abdolali ;

Hosseinpour, Zahra ;

Dolatyari, Mahboubeh ;

Bakhtiari, Akbar .

PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS, 2012, 249 (06) :1264-1270

[2] Pure silica NU-1 and Na- and Al-free Ti-NU-1 synthesized by the dry gel conversion method [J].

Bhaumik, A ;

Tatsumi, T .

MICROPOROUS AND MESOPOROUS MATERIALS, 2000, 34 (01) :1-7

[3] Crystallization of sol-gel boehmite via hydrothermal annealing [J].

Bokhimi, X ;

Sánchez-Valente, J ;

Pedraza, F .

JOURNAL OF SOLID STATE CHEMISTRY, 2002, 166 (01) :182-190

[4] KINETICS OF BOEHMITE FORMATION BY THERMAL-DECOMPOSITION OF GIBBSITE [J].

CANDELA, L ;

PERLMUTTER, DD .

INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, 1992, 31 (03) :694-700

[5] Boehmite-supported vanadium oxide catalysts [J].

Cruz, AMD ;

Eon, JG .

APPLIED CATALYSIS A-GENERAL, 1998, 167 (02) :203-213

[6] Structure and stability of aluminum hydroxides: A theoretical study [J].

Digne, M ;

Sautet, P ;

Raybaud, P ;

Toulhoat, H ;

Artacho, E .

JOURNAL OF PHYSICAL CHEMISTRY B, 2002, 106 (20) :5155-5162

[7] PREPARATION AND PROPERTIES OF FIBROUS BOEHMITE SOL AND ITS APPLICATION FOR THIN POROUS MEMBRANE [J].

FURUTA, S ;

KATSUKI, H ;

TAKAGI, H .

JOURNAL OF MATERIALS SCIENCE LETTERS, 1994, 13 (15) :1077-1080

[8] Chromium (VI) adsorption on boehmite [J].

Granados-Correa, F. ;

Jimenez-Becerril, J. .

JOURNAL OF HAZARDOUS MATERIALS, 2009, 162 (2-3) :1178-1184

[9] Comparison of the Cd(II) adsorption processes between boehmite (γ-AlOOH) and goethite (α-FeOOH) [J].

Granados-Correa, F. ;

Corral-Capulin, N. G. ;

Olguin, M. T. ;

Acosta-Leon, C. E. .

CHEMICAL ENGINEERING JOURNAL, 2011, 171 (03) :1027-1034

[10] Synthesis of aluminium hydrates by a precipitation method and their use in coatings for ceramic membranes [J].

Hwang, KT ;

Lee, HS ;

Lee, SH ;

Chung, KC ;

Park, SS ;

Lee, JH .

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, 2001, 21 (03) :375-380

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