Influences of Water on the Hydration of Calcined Natural Calcite: Properties and Transesterification Activity Improvement

Parncheewa Udomsap; Boonyawan Yoosuk

doi:10.4028/www.scientific.net/AMR.93-94.75

Paper Titles

Performance of Bioactive Hydroxyapatite Coating after Soaking in Simulated Body Fluid
p.59

Effect of Layer Thickness on the Phosphorization of 3DP Gypsum Based Monolith
p.63

Nanostructured Polycaprolactone-Inorganic Phosphate Hybrid Scaffold for Medical Applications
p.67

Gamma-Rays Absorption Studies of PbO-SiO₂ Glass System
p.71

Influences of Water on the Hydration of Calcined Natural Calcite: Properties and Transesterification Activity Improvement
p.75

Nd:YAG Laser Perforation of Plastic Films for Enhanced Breathability
p.79

Preparation of Nanoparticles by Laser Ablation on Copper Target in Distilled Water
p.83

Photoactivity of TiO₂ Films on Glass Substrate for Cyanide Degradation
p.87

Effect of 3-Aminopropyltrimethoxysilane-g-Rice Husk Silica on Flame Retardant of ABS/Organomontmorillonite Nanocomposites
p.91

HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 93-94Influences of Water on the Hydration of Calcined...

Influences of Water on the Hydration of Calcined Natural Calcite: Properties and Transesterification Activity Improvement

Abstract:

This paper presents the technique that can considerably improve basicity and transesterification activity of calcined natural calcite. Calcined calcite was refluxed in water followed by the calcinations at 600 oC. The characterization results indicate that this procedure substantially increases both the specific surface area and the amount of basic site. Hydration and subsequent calcination also generates a new calcium oxide with less crystalline. ME content was enhanced to 93.9 wt% in 1 hr from 75.5 wt% of calcined calcite. The results imply that the active sites produced by the calination of hydrated sample at 600 oC have higher basicity than those generated from calcinations of fresh calcite at 800 oC. The present study provides new insights for improving catalyst activity by tailoring the preparation conditions.

You might also be interested in these eBooks

View Preview

Info:

Periodical:

Advanced Materials Research (Volumes 93-94)

Pages:

75-78

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.93-94.75

Citation:

Cite this paper

Online since:

January 2010

Authors:

Parncheewa Udomsap, Boonyawan Yoosuk

Keywords:

Calcite, Catalyst, Hydration, Transesterification, Water

Export:

RIS, BibTeX

Price:

Permissions CCC:

Request Permissions

Permissions PLS:

Request Permissions

Сopyright:

Citation:

References

[1] S.R. Watkins and F.A. Lee: Green Chem. 7 (2004), p.335.

Google Scholar

[2] G.J. Suppes, K. Bockwinkel, S. Lucas, J.B. Mason and J.A. Heppert: J. Am. Oil. Chem. Soc. 78 (2001), p.139.

Google Scholar

[3] M.L. Granados, M.D.Z. Poves D.M. Alonso, R. Mariscal, F.C. Galisteo, R. Moreno-Tost, J. Santamarı and J.L.G. Fierro: Appl. Catal. B: Environ. 73(2007), p.317.

DOI: 10.1016/j.apcatb.2006.12.017

Google Scholar

[4] M.A. Aramendia, J.A. Benitez, V. Borau, C. Jiminez, J.M. Marinas, J.R. Ruiz and F. Urbano: J. Solid. State. Chem. 144 (1999), p.25.

Google Scholar

[5] Y. Xi and R.J. Davis: J. Catal. 254 (2008), p.190.

Google Scholar

[6] F. Cavani, F. Trifiro and A. Vaccari: Catal. Today 11 (1991) p.173. 0. 0 75. 5 1. 5 93. 9 0 20 40 60 80 100 Fresh calcite CaOs CaOw CaO600 ME Content (wt%).

Google Scholar