Acid activation of a palygorskite with HCl: Development of physico-chemical, textural and surface properties (Record no. 47552)

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Transcribing agency CICY
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Classification number (OCLC) (R) ; Classification number, CALL (RLIN) (NR) B-13352
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Title Acid activation of a palygorskite with HCl: Development of physico-chemical, textural and surface properties
490 0# - SERIES STATEMENT
Volume/sequential designation Applied Clay Science, 10(3), p.247-258, 1995
520 3# - SUMMARY, ETC.
Summary, etc. A palygorskite from Bercimuel (Segovia, Spain)was treated with 1.0,3.0,5.0 and 7.0 N solutions of HCl for 1 hour under reflux. The solids obtained were characterized by XRD, FT-IR spectroscopy, thermal <analyses, TEM and nitrogen adsorption-desorption isotherms at 77 K. The acid treatment runs with the removal of the octahedral cations -Mg( II), Al( III)-and the formation of amorphous silica from the tetrahedral sheet. An important increase in the specific surface area was observed during treatment, reaching a maximum of 286 m2/g in the sample treated with 5.0 N HCl. The silica obtained after the treatments maintains the fibrous morphology of natural palygorskite. No creation of microporosity is observed during the treatment.
700 12 - ADDED ENTRY--PERSONAL NAME
Personal name Suárez Barrios, M.
700 12 - ADDED ENTRY--PERSONAL NAME
Personal name Flores González, L.V.
700 12 - ADDED ENTRY--PERSONAL NAME
Personal name Vicente Rodriguez, M.A.
700 12 - ADDED ENTRY--PERSONAL NAME
Personal name Martin Pozas, J.M.
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  Clasificación local     Ref1 CICY CICY Documento préstamo interbibliotecario 25.06.2025   B-13352 25.06.2025 25.06.2025 Documentos solicitados