Effect of surfactant/silica and hydrothermal time on the specific surface area of mesoporous materials from coal-measure kaolin

Abstract

Mesoporous materials with the highest surface area were synthesized by hydrothermal treatment from coal-measure kaolin using cetyltrimethylammonium bromide (CTAB) as template. The effect of several factors on surface area of products also had been discussed. The products were characterized by FTIR, HRTEM and N₂ adsorption and desorption isotherm plot methods. There was typical structure as Si-O, Si-OH and Si-O-Si of mesoporous materials in the framework of synthesized materials; the pore size distributions of the products showed a sharp peak at 3.82 nm. The effect of hydrothermal treatment time and the amount of template on the specific surface area of mesoporous materials was important, when the Surf/Si = 0.135, and hydrothermal time = 12 h, and the surface area of the product reached up to 1 070 m²/g, which was higher than other products.

Keywords

coal-measure kaolin / mesoporous materials / hydrothermal synthesis

References

[1] Liu X. W., Li J. W., Zhou L., . Adsorption of CO₂, CH₄ and N₂ on Ordered Mesoporous Silica Molecular Sieve [J]. Chem. Phys. Lett., 2005, 415: 198-201.

[2] Prinson P. S., Shylesh S., Singh A. P. Catalytic Properties of Tincontaining Mesoporous Molecular Sieves in the Selective Reduction of Carbonyl Compounds (Meerwein-Ponndorf-Verley (MPV) Reaction) [J]. J. Mol. Catal. A: Chem., 2007, 266: 11-20.

[3] Shrikant S. B., Singh A. P. Characterization and Catalytic Activity of Cobalt Containing MCM-41 Prepared by Direct Hydrothermal, Grafting and Immobilization Methods [J]. J. Mol. Catal. A: Chem., 2007, 266: 118-130.

[4] Ganapati V. S., Trissa J., Halligudi S. B. Copper (II) Ion Exchanged AlSBA-15: A Versatile Catalyst for Intermolecular Hydroamination of Terminal Alkynes with Aromatic Amines [J]. J. Catal., 2007, 250: 274-282.

[5] Chen D. H., Hu B., Huang C. Z. Chitosan Modified Ordered Mesoporous Silica as Micro-column Packing Materials for on-line Flow Injection-inductively Coupled Plasma Optical Emission Spectrometry Determination of Trace Heavy Metals in Environmental Water Samples [J]. Talanta, 2009, 78(2): 491-497.

[6] Xu Y., Cui Y. X., Jiang D., . Dye-templating Nonsurfactant Synthesis of Mesoporous Silica [J]. Microporous Mesoporous Mater., 2008, 109: 335-341.

[7] Ying F., Li J. H., Huang C. J., . Direct Synthesis and Superior Catalytic Performance of V-containing SBA-15 Mesoporous Materials for Oxidative Dehydrogenation of Propane [J]. Catal. Lett., 2007, 115: 137-142.

[8] Bhagat S. D., Kim Y. H., Gyeongbeom Y., . Mesoporous SiO₂ Powders with High Specific Surface Area by Microwave Drying of Hydrogels: A Facile Synthesis [J]. Microporous Mesoporous Mater., 2008, 108: 333-339.

[9] Madhusoodana C. D., Kameshima Y., Nakajima A., . Synthesis of High Surface Area Al-containing Mesoporous Silica from Calcined and Acid Leached Kaolinites as the Precursors [J]. J. Colloid. Interface Sci., 2006, 297: 724-731.

[10] Chandrasekar G., Ahn W. S. Synthesis of Cubic Mesoporous Silica and Carbon Using Fly Ash [J]. J. Non-Cryst. Solids, 2008, 354: 4 027-4 030.

[11] Wu X. W., Ma H. W., Li J. H., . The Synthesis of Mesoporous Aluminosilicate Using Microcline for Adsorption of Mercury(II) [J]. J. Colloid. Interface Sci., 2007, 315: 555-561.

[12] Xia M. S., Jiang Y. S., Li F. F., . Preparation and Characterization of Bimodal Mesoporous Montmorillonite by Using Single Template [J]. Colloids Surf., A, 2009, 338: 1-6.

[13] Mahir A., Çiğdem H., Zürriye Y., . The Effect of Alkali Concentration and Solid/liquid Ratio on the Hydrothermal Synthesis of Zeolite NaA from Natural Kaolinite [J]. Microporous Mesoporous Mater., 2005, 86: 176-184.

[14] Shams K., Mirmohammadi S. J. Preparation of 5A Zeolite Monolith Granular Extrudates Using Kaolin: Investigation of the Effect of Binder on Sieving/adsorption Properties Using a Mixture of Linear and Branched Paraffin Hydrocarbons [J]. Microporous Mesoporous Mater., 2007, 106: 268-277.

[15] Don T. N., Thang V. D., Pham T. H., . Y Zeolite From Kaolin Taken in Yen Bai-Vietnam: Synthesis, Characterization and Catalytic Activity for the Cracking of N-heptane [J]. Stud. Surf. Sci. Catal., 2006, 159: 197-200.

[16] Roghayeh K. M., Fakhry S. A. A Study on the Thermal Behavior of Low Silica X-type Zeolite Ion-exchanged with Alkaline Earth Cations [J]. Microporous Mesoporous Mater., 2009, 120: 285-293.

[17] Wang P., Shen B. J., Shen D. D., . Synthesis of ZSM-5 Zeolite from Expanded Perlite/kaolin and Its Catalytic Performance for FCC Naphtha Aromatization [J]. Catal. Comm., 2007, 8: 1 452-1 456.

[18] Ríos C. A., Williams C. D., Fullen M. A. Nucleation and Growth History of Zeolite LTA Synthesized from Kaolinite by Two Different Methods [J]. Appl. Clay Sci., 2009, 42: 446-454.

[19] Lin D. C., Xu X. W., Zuo F., . Crystallization of JBW, CAN, SOD and ABW Type Zeolite from Transformation of Metakaolin [J]. Microporous Mesoporous Mater., 2004, 70: 63-70.

[20] Kakali G., Perraki T., Tsivilis S., . Thermal Treatment of Kaolin: The Effect of Mineralogy on the Pozzolanic Activity [J]. Appl. Clay Sci., 2001, 20(1–2): 73-80.

[21] Cheng X. H., Jin C., Liu X. H. Study of Surface Modification for Coal Kaolin Powder by Infrared Spectrum Analysis [J]. Chin. J. Spectro. Lab., 2005, 22: 1 230-1 233.

[22] Ben Y. H., Li H., Guan Y., . Research on Structure and Adsorption Performance of Modified Kaolin Materials with Large Surface Area [J]. Non-Metal. Mines., 2006, 29(2): 15-23.

[23] Okada K., Shimai A., Takei T., . Preparation of Microporous Silica from Metakaolinite by Selective Leaching Method [J]. Microporous Mesoporous Mater., 1998, 21(4–6): 289-296.

[24] Chen C. Y., Li H. X., Davis M. E. Study on Mesoporous Materials. I.Synthesis and Characterization of MCM-41 [J]. Microporous Mater., 1993, 2: 17-26.

[25] Rojas F., Kornhauser I., Felipe C., . Capillary Condensation in Heterogeneous Mesoporous Network Consisting of Variable Connectivity and Pore-size Correlation [J]. Phys. Chem. Chem. Phys., 2002, 4: 2 346-2 355.