Synthesis and Characterization of Boehmites Obtained from Gibbsite in Presence of Different Environments
Source abstract
Abstract
In this study, results related to boehmite synthesis by hydrothermal processes starting from a Bayer commercial gibbsite are reported. The processes have been conducted from aqueous suspensions with initial acidic or alkaline pH, without or with acetate ion, at 160oC for 72h to 168h. The final materials were characterized by X-ray diffraction (XRD), thermal methods (DTA and TGA) and scanning electron microscopy (SEM). The influence of the synthesis conditions on the morphology of the boehmite crystals obtained from the gibbsite at different hydrothermal processes are discussed.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Clay minerals and soil interactions · Bauxite Residue and Utilization · Iron oxide chemistry and applications
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Universidade de São Paulo, Brazil
References (67)
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1. Stamires D · 2000
2. Hart LD · 1990
3. Hydrothermal synthesis of well-crystallized boehmite crystals of various shapes10.1590/S1516-14392009000400012 ↗
4. Preparation of colloidal boehmite needles by hydrothermal treatment of aluminum alkoxide precursors10.1111/j.1151-2916.1991.tb04102.x ↗
5. Template-free synthesis of hierarchical spindle-like γ-Al2O3 materials and their adsorption affinity towards organic and inorganic pollutants in water10.1039/b924366f ↗
6. Controlled hydrothermal synthesis of colloidal boehmite (γ-AlOOH) nanorods and nanoflakes and their conversion into - Al2O3 nanocrystals10.1016/j.ssc.2007.11.033 ↗
7. Hydrothermal preparation of boehmite nanorods by selective adsorption of sulfate10.1021/la8008514 ↗
8. Solution-based chemical synthesis of boehmite nanofibers and alumina nanorods10.1021/jp045706k ↗
9. Fabrication of boehmite AlOOH nanofibers by a simple hydrothermal process10.1016/j.matlet.2006.03.083 ↗
10. Tuning the size and shape of nano-boehmites by a free-additive hydrothermal method10.1039/C4CE02094D ↗
11. Solid-based hydrothermal synthesis and characterization of alumina nanofibers with controllable aspect ratios10.1111/j.1551-2916.2009.03005.x ↗
12. Nanoparticles assembly of boehmite nanofibers without a surfactant10.1016/j.materresbull.2007.07.022 ↗
13. Synthesis and surface characterization of yttrium doped boehmite nanofibers10.1016/j.jcis.2008.07.034 ↗
14. Gallium-doped boehmite nanotubes and nanoribbons. A TEM, EDX, XRD, BET, and TG study10.1021/jp067897s ↗
15. γ-alumina nanofibers prepared from aluminum hydrate with poly(ethylene oxide) surfactant10.1021/cm010736a ↗
16. Hydrothermal synthesis of boehmite (γ-AlOOH) nanoplatelets and nanowires: pH-controlled morphologies10.1088/0957-4484/18/28/285608 ↗
17. Size and shape control of γ-AlOOH boehmite nanoparticles, a precursor of γ-Al2O3 catalyst10.1016/S0167-2991(06)80932-8 ↗
18. Facile hydrothermal synthesis of uniform 3D γ-AlOOH architectures assembled by nanosheets10.1002/crat.200900514 ↗
19. Hydrothermal synthesis of microscale boehmite and gamma nanoleaves alumina10.1016/j.matlet.2007.08.067 ↗
20. Improvement of boehmite nanoparticles' aqueous dispersability by controlling their size, shape and crystallinity10.1039/C4RA06322H ↗
21. Transition alumina nanoparticles and nanorods from boehmite nanoflakes10.1016/j.jcrysgro.2008.05.016 ↗
22. Boehmite (γ-AlOOH) nanoparticles: Hydrothermal synthesis, characterization, pH-controlled morphologies, optical properties, and DFT calculations10.1002/pssb.201147484 ↗
23. Hydrothermal preparation of boehmite-doped AgCl nanocubes and their characterization10.1016/j.matlet.2011.03.012 ↗
24. Facile hydrothermal synthesis of hierarchical boehmite: sulfate-mediated transformation from nanoflakes to hollow microspheres10.1021/cg100544w ↗
25. lv Y, Shang X. One-step synthesis of hierarchical cantaloupe-like alooh superstructures via a hydrothermal route10.1021/cg7007683 ↗
26. Facile fabrication of urchin-like hollow boehmite and alumina microspheres with a hierarchical structure via triton X-100 assisted hydrothermal synthesis10.1039/C4CE02133A ↗
27. Hydrothermal synthesis of hierarchical micron flower-like γ-AlOOH and γ-Al2O3 superstructures from oil shale ash10.1016/j.powtec.2011.09.005 ↗
28. Boehmite nanopetals self assembled to form rosette-like nanostructures10.1016/j.matlet.2008.06.025 ↗
29. Synthesis of flower-like boehmite (γ-AlOOH) via a one-step ionic liquid-assisted hydrothermal route10.1016/j.jssc.2013.03.049 ↗
30. Morphology evolution studies of boehmite hollow microspheres synthesized under hydrothermal conditions10.1016/j.matlet.2011.11.116 ↗
31. Large-scale synthesis of hierarchical flowerlike boehmite architectures10.1016/S1001-0742(11)61076-0 ↗
32. Synthesis of three-quarter-sphere-like γ-alooh superstructures with high adsorptive capacity10.1002/ejic.200901036 ↗
33. Thermal decomposition of gibbsite under low pressures i. formation of the boehmitic phase10.1016/0021-9517(75)90014-7 ↗
34. Wefers K · 1987
35. Thermal decomposition of precipitated fine aluminium trihydroxide10.1111/j.1600-0692.2004.00686.x ↗
36. On the decomposition of synthetic gibbsite studied by neutron thermodiffractometry10.1111/j.1551-2916.2006.01191.x ↗
37. Influence of the short time grinding on the thermal decomposition processes of gibbsite produced by the Bayer process
38. Influence of grain and crystallite size in the gibbsite to boehmite thermal transformation
39. The reaction series, gibbsite → chi alumina → kappa alumina → corundum
40. Influence of hydrothermal temperature on structure and microstructure of boehmite10.1016/S1003-6326(10)60043-X ↗
41. Nanostructured ceramic powders by hydrothermal synthesis and their applications10.1016/S1387-1811(02)00334-7 ↗
42. Morphology controllable synthesis of γ-alumina nanostructures via an ionic liquid-assisted hydrothermal route10.1021/cg901422v ↗
43. Control of the morphology and particle size of boehmite nanoparticles synthesized under hydrothermal conditions10.1021/la700233q ↗
44. Hydrothermal preparation and characterization of boehmites10.1016/S0167-577X(99)00156-1 ↗
45. Dragčević đ, Popović, S. Hydrothermal crystallization of boehmite from freshly precipitated aluminium hydroxide10.1016/S0167-577X(99)00088-9 ↗
46. Production of micro-crystalline boehmite from hydrothermal processing of Bayer plant alumina tri-hydrate10.1016/j.powtec.2012.10.041 ↗
47. Enhanced lateral to basal surface ratio in boehmite nanoparticles achieved by hydrothermal aging10.1021/acs.cgd.5b00629 ↗
48. Hydrothermal synthesis of submicrometer crystals of boehmite10.1016/S0955-2219(00)00052-2 ↗
49. Preparation of single crystals under hydrothermal conditions10.2109/jcersj.113.565 ↗
50. Microwave-assisted solvothermal synthesis of alooh hierarchically nanostructured microspheres and their transformation to γ-al2 o3 with similar morphologies10.1021/jp805751t ↗
51. Growth and surface properties of boehmite nanofibers and nanotubes at low temperatures using a hydrothermal synthesis route10.1021/la700291d ↗
52. Effect of solution chemistry on preparation of boehmite by hydrothermal assisted sol-gel processing of aluminum alkoxides10.1007/s10971-005-4790-7 ↗
53. Crystallization of sol–gel boehmite via hydrothermal annealing10.1006/jssc.2002.9579 ↗
54. Sulfate ions and boehmite crystallization in a sol made with aluminum tri-sec-butoxide and 2-propanol10.1021/jp0611673 ↗
55. Use of polyols as particle size and shape controllers: application to boehmite synthesis from sol–gel routes10.1039/c0cp02075c ↗
56. Synthesis of thermo-stable high surface area alumina powder from sol–gel derived boehmite10.1016/j.matchemphys.2007.02.044 ↗
57. Preparation of alumina through a sol-gel process. Synthesis, characterization, thermal evolution and model of intermediate boehmite10.1039/B306170A ↗
58. Formation of boehmite via precipitation from aqueous solutions10.1016/0167-577X(95)00093-3 ↗
59. Influence of precipitation conditions (pH and temperature) on the morphology and porosity of boehmite particles10.1016/S0032-5910(02)00178-X ↗
60. Relationship between formation conditions, properties, and crystallite size of boehmite10.1006/jcis.2002.8535 ↗
61. Basic concepts of the crystallization from aqueous solutions: The example of aluminum oxy(hydroxi)des and aluminosilicates10.1016/j.crte.2010.12.006 ↗
62. Specific features of the phase transition of gibbsite into boehmite under hydrothermal treatment of floccules in an aqueous suspension10.1134/S1070427215050079 ↗
63. Rocha GA · 2013
64. γ-AlOOH nanomaterials with regular shapes: hydrothermal fabrication and Cr2O72- adsorption10.1002/ejic.201100793 ↗
65. Adsorption of carboxylic acids on submicrocrystalline aluminum hydroxides in aqueouss. Part I: Qualitative study by infrared and Raman spectroscopy10.1366/000370202760077496 ↗
66. Thermal decomposition of bauxite minerals: infrared emission spectroscopy of gibbsite, boehmite and diaspore10.1023/A:1014303119055 ↗
67. Todor DN · 1976