Mesoscale organization of flower-like La2O2CO3 and La2O3Microspheres

被引：35

作者：

Sun, Chunwen ^{[1
]}

Xiao, Guoliang ^{[1
]}

Li, Hong ^{[1
]}

Chen, Liquan ^{[1
]}

机构：

[1] Chinese Acad Sci, Inst Phys, Nanoscale Phys & Devices Lab, Beijing 100080, Peoples R China

来源：

JOURNAL OF THE AMERICAN CERAMIC SOCIETY | 2007年 / 90卷 / 08期

关键词：

D O I：

10.1111/j.1551-2916.2007.01756.x

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Well-dispersed spherical lanthanum oxycarbonate (La2O2CO3) and La2O3 particles with a flower-like morphology were synthesized via a simultaneous polymerization-precipitate reaction, metamorphic reconstruction, and mineralization under a hydrothermal condition as well as subsequent calcination. The La2O2CO3 and La2O3 microspheres obtained consist of about 20 or 40 nm thick nanosheets as petals, respectively. They have an open three-dimensional mesoporous and hollow structure and possess a high surface area, large pore volume, and marked thermal stability. These novel porous structural lanthanum-based materials could be used as catalyst supports for many reactions.

引用

页码：2576 / 2581

页数：6

共 34 条

[1] Ordered meso- and macroporous binary and mixed metal oxides [J].

Carreon, MA ;

Guliants, VV .

EUROPEAN JOURNAL OF INORGANIC CHEMISTRY, 2005, (01) :27-43

[2] Microbial polysaccharides template assembly of nanocrystal fibers [J].

Chan, CS ;

De Stasio, G ;

Welch, SA ;

Girasole, M ;

Frazer, BH ;

Nesterova, MV ;

Fakra, S ;

Banfield, JF .

SCIENCE, 2004, 303 (5664) :1656-1658

[3] CREATION OF TEMPLATED COMPLEX TOPOLOGICAL MORPHOLOGIES IN COLLOIDAL SILICA [J].

CHANG, SY ;

LIU, L ;

ASHER, SA .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1994, 116 (15) :6745-6747

[4] Ceramic hollow spheres and their applications [J].

Cochran, JK .

CURRENT OPINION IN SOLID STATE & MATERIALS SCIENCE, 1998, 3 (05) :474-479

[5] Raman studies of Rh and Pt on La2O3 catalysts used in a membrane reactor for hydrogen production [J].

Cornaglia, LM ;

Múnera, J ;

Irusta, S ;

Lombardo, EA .

APPLIED CATALYSIS A-GENERAL, 2004, 263 (01) :91-101

[6] Cobalt 1995 [J].

Davies, MB .

COORDINATION CHEMISTRY REVIEWS, 1998, 169 :237-361

[7] Carbon exchange in hot alkaline degradation of glucose [J].

Ellis, AV ;

Wilson, MA .

JOURNAL OF ORGANIC CHEMISTRY, 2002, 67 (24) :8469-8474

[8] Production of hydrogen for fuel cells by reformation of biomass-derived ethanol [J].

Fatsikostas, AN ;

Kondarides, DI ;

Verykios, XE .

CATALYSIS TODAY, 2002, 75 (1-4) :145-155

[9] Steam reforming of bio-ethanol on alkali-doped Ni/MgO catalysts: hydrogen production for MC fuel cell [J].

Frusteri, F ;

Freni, S ;

Chiodo, V ;

Spadaro, L ;

Di Blasi, O ;

Bonura, G ;

Cavallaro, S .

APPLIED CATALYSIS A-GENERAL, 2004, 270 (1-2) :1-7

[10]

GARY A, 1988, J COLLOID INTERF SCI, V126, P243

← 1 2 3 4 →