Study of Chocolate Clay (Boa Vista, Paraíba) Organophilization Using the Mixture of Quaternary Ammonium Salts through Direct Method

Abstract:

The organoclays contain intercalated organic molecules in their structural layers. The more clay used to prepare organoclays are those derived from the smectite group bentonites mainly due to the small size of crystals and high cation exchange capacity, which facilitate the intercalation of organic compounds. This work aims to obtain organoclays from a mixture of two different quaternary ammonium salts in a 1:1 ratio through the direct method of organophilization. This procedure will be performed using the clay Chocolate from the municipality of Boa Vista, Paraíba state, which has in its composition of smectite clay minerals group. The samples were characterized by X-ray diffraction (XRD) and infrared spectroscopy (IR). The testing Foster swelling in a later step, using different organic solvents: gasoline, diesel and kerosene were used to investigate the compatibility clays after modification with the salts.

• Periodical: Materials Science Forum (Volume 805)
• Pages: 672-677
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.805.672
• Online since: September 2014
• Authors: Wellington Siqueira Lima*, Meiry Gláucia Freire Rodrigues, Mariaugusta Ferreira Mota, Aline Cadígena Lima Patrício, Marcílio Máximo Silva
• Keywords: Organophilic Modification, Quaternary Ammonium Salts, Smectite Clay

References

[1] A.P. Chagas in: Argilas: as essências da terra, edited by Moderna, volume 1, São Paulo (1996).

[2] P. Souza Santos in: Ciência e Tecnologia de Argilas, edited by Edgard Blücher Ltda., São Paulo (1992).

[3] C.P.F. Santos, D.M.A. Melo, M.A.F. Melo, E.V. Sobrinho: Cerâmica, Vol. 48, (2002), p.178.

[4] L.B. Paiva, A.R. Morales, F.R.V. Diaz: Cerâmica, Vol. 54, (2008), pp.213-226.

[5] F. Bergaya, B.K.G. Theng and G. Lagaly in: Handbook of Clay Science, edited by Elsevier ( 2006).

[6] Standard Test Method for Swell Indexo f Clay Mineral Component of Geosynthetic Clay Liners - ASTM D 5890-95.

DOI: 10.1520/d5890-11

[7] M.G.A. Vieira, A.F. Almeida Neto, M.L. Gimenes, M.G.C. da Silva: J. Hazard. Mater. Vol. 176, (2010), pp.109-118.

[8] M.G.A. Vieira, A.F. Almeida Neto, M.L. Gimenes, M.G.C. da Silva: J. Hazard. Mater. Vol. 177, (2010), pp.362-371.

[9] K.R.O. Pereira in: Estudo, em escala de laboratório, do uso de argilas do tipo Bofe na obtenção de argilas organofílicas e ativadas, Tese de Doutorado, USP – São Paulo (2008).

DOI: 10.11606/t.3.2008.tde-02062008-165709

[10] F.R. Valenzuela Díaz in: Preparação a nível de laboratório de algumas argilas esmectíticas organofilicas, Tese de Doutorado, USP – São Paulo (1994).

[11] C.F. Gomes in: Argilas: o que são e pra que servem, edited by Fundation Calouste Gulbenkian, Lisboa (1988).