Preparation and Adsorption Properties of Rod MgNiAl-LDH

Abstract:

Using magnesium nitrate, nickel nitrate and aluminum nitrate as raw materials and urea as precipitant, magnesium nickel aluminum ternary hydrotalcites with large specific surface area were prepared by hydrothermal method. The prepared samples were characterized by SEM、XRD、BET and EDS etc., respectively. The adsorption properties of MgNiAl-LDHs, MgAl-LDHs and their calcined products (MgNiAl-LDOs, MgAl-LDOs) for chloride ions in solution were investigated. The results show that MgNiAl-LDHs are cubic with rod-like structure, with a specific surface area of 197.62 m²/g, which is much larger than that of MgAl-LDHs (102.82 m²/g). Under the same adsorption conditions, the saturated adsorption capacities of MgNiAl-LDHs and MgAl-LDHs for chloride ions are 130.06mg/g and 110.02 mg/g respectively. MgNiAl-LDOs showed better adsorption ability for chloride ions. By simulating the adsorption data, the results show that the adsorption kinetics and the adsorption isotherm are in accordance with the quasi-second-order kinetic model and the Langmuir isotherm model, respectively.

• Periodical: Materials Science Forum (Volume 956)
• Pages: 294-304
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.956.294
• Online since: June 2019
• Authors: Guo Jun Ke, Hong Jun Tan, Peng Fei Yang*, Pin Yu Zou
• Keywords: Adsorption, Chloride Ion, Hydrotalcite, Preparation

References

[1] Erickson K L, Bostrom T E, Frost R L. A study of structural memory effects in synthetic hydrotalcites using environmental SEM[J]. Materials Letters, 2005, 59(2):226-229.

DOI: 10.1016/j.matlet.2004.08.035

[2] Pérez-Ramírez, J., S. Abelló, and V.D.P. Nm, Memory effect of activated Mg-Al hydrotalcite: in situ XRD studies during decomposition and gas-phase reconstruction. Chemistry, 2010. 13(3): 870-878.

DOI: 10.1002/chem.200600767

[3] Ma W, Zhao N, Yang G, et al. Removal of fluoride ions from aqueous solution by the calcination product of Mg-Al-Fe hydrotalcite-like compound[J]. Desalination, 2011, 268(1):20-26.

DOI: 10.1016/j.desal.2010.09.045

[4] Katsuomi Takehira, Tetsuya Shishido, Daisuke Shoro,et al. Preparation of egg-shell type Ni-loaded catalyst by adopting Memory Effect, of Mg-Al hydrotalcite and its application for CH reforming[J]. Catalysis Communications, 2004, 5(5):209-213.

DOI: 10.1016/j.catcom.2004.02.004

[5] Palomares A E, Prato J G, Rey F, et al. Using the memory effect, of hydrotalcites for improving the catalytic reduction of nitrates in water[J]. Journal of Catalysis, 2004, 221(1):62-66.

DOI: 10.1016/j.jcat.2003.07.013

[6] ZHAO Ce, ZENG HongYan, WANG YaJu, et al. Memory Effect of Mg-Al Hydrotalcites and Its Chromium(VI) Adsorption Property[J]. Journal of Inorganic Materials, 2011, 26(8):874-880.

[7] Das J, Patra B S, Baliarsingh N, et al. Adsorption of phosphate by layered double hydroxides in aqueous solutions[J]. Applied Clay Science, 2006, 32(3-4):252-260.

DOI: 10.1016/j.clay.2006.02.005

[8] You Y, Vance G F, Zhao H. Selenium adsorption on Mg-Al and Zn-Al layered double hydroxides[J]. Applied Clay Science, 2001, 20(1):13-25.

DOI: 10.1016/s0169-1317(00)00043-0

[9] Carpentier, J., et al., Characterisation of Mg/Al hydrotalcite with interlayer palladium complex for catalytic oxidation of toluene. Applied Catalysis A General, 2002. 234(1): pp.91-101.

DOI: 10.1016/s0926-860x(02)00201-6

[10] Goswamee R L, Sengupta P, Bhattacharyya K G, et al. Adsorption of Cr(VI) in layered double hydroxides[J]. Applied Clay Science, 1998, 13(1):21-34.

DOI: 10.1016/s0169-1317(98)00010-6

[11] Lv L, He J, Wei M, et al. Uptake of chloride ion from aqueous solution by calcined layered double hydroxides: equilibrium and kinetic studies.[J]. Water Research, 2006, 40(4):735-743.

DOI: 10.1016/j.watres.2005.11.043

[12] Fogg A M, And A J F, Parkinson G M. Synthesis and Anion Exchange Chemistry of Rhombohedral Li/Al Layered Double Hydroxides[J]. Chemistry of Materials, 2002, 14(1):232-234.

DOI: 10.1021/cm0105099

[13] Zheng Y M, Li N, Zhang W D. Preparation of nanostructured microspheres of Zn-Mg-Al layered double hydroxides with high adsorption property[J]. Colloids & Surfaces A Physicochemical & Engineering Aspects, 2012, 415(48):195-201.

DOI: 10.1016/j.colsurfa.2012.10.014

[14] Mandal S, Mayadevi S. Adsorption of fluoride ions by Zn-Al layered double hydroxides[J]. Applied Clay Science, 2008, 40(1):54-62.

DOI: 10.1016/j.clay.2007.07.004

[15] WANG Junfeng, LI Zirong, GUO Yu. Adsorption of Cl- in aqueous solution by Mg/Al hydrotalcite and roasting products. Journal of Xi'an University of Technology, 2008(02):171-174.

[16] Ke Guojun, Zhang Lin, Yang Pengfei, et al. Controllable synthesis of magnesium and aluminum hydrotalcite with different morphologies and its adsorption performance for chloride ions [J]. Fine chemical engineering, 2017, 34(10):1107-1113.