2012
DOI: 10.4028/www.scientific.net/amr.532-533.3
|View full text |Cite
|
Sign up to set email alerts
|

Characterization and Analysis on the Thermal Transformation of Boehmite Synthesized by Yoldas Method

Abstract: The boehmite (AlOOH) sol derived from aluminium isopropoxide was synthesized by Yoldas method. The physicochemical process and phase transition of AlOOH were investigated by TG-DSC, N2 adsorption-desorption, XRD and TEM. The results showed that upon heating, AlOOH lost the physicsorbed water first, and then lost the chemisorbed water at 242 °C, and the dehydroxylation occurred at 361 °C. The BET surface area, total pore volume and pore diameter increased, since the waters were lost. The orthorhombic AlOOH tran… Show more

Help me understand this report

Search citation statements

Order By: Relevance

Paper Sections

Select...
1
1

Citation Types

0
2
0

Year Published

2021
2021
2021
2021

Publication Types

Select...
2

Relationship

0
2

Authors

Journals

citations
Cited by 2 publications
(2 citation statements)
references
References 8 publications
0
2
0
Order By: Relevance
“…The first endothermic peak refers to solvent evaporation, with two accompanying weight losses. High exothermic effect at 305 °C corresponds to the combustion of organics [ 45 ]. DTG curve shows a multi-stage weight loss associated with this effect, presented by two weight losses.…”
Section: Resultsmentioning
confidence: 99%
“…The first endothermic peak refers to solvent evaporation, with two accompanying weight losses. High exothermic effect at 305 °C corresponds to the combustion of organics [ 45 ]. DTG curve shows a multi-stage weight loss associated with this effect, presented by two weight losses.…”
Section: Resultsmentioning
confidence: 99%
“…Nanoparticles were introduced into the surface of CaCO 3 granules by spraying the nano sol (Figure 10A). With the increase in temperature, nano boehmite (AlOOH) particles in alumina sol began dehydration and converted to high activity nano Al 2 O 3 26,27 and the CaCO 3 pseudomorphs with microsized pores were formed (Figure 10B) when alumina sol was used. The reaction mechanism involving calcium carbonate and boehmite was suggested according to the equation ():CaCO3+2AlOOH=Ca3Al2normalO6+3CO2false↑+normalH2O…”
Section: Discussionmentioning
confidence: 99%