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Thermal and chemical stability of Cu–Zn–Cr-LDHs prepared by accelerated carbonation

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Abstract.
Layered double hydroxides CuxZn6 − xCr2(OH)16(CO3)·4H2O with different molar ratios of Cu/Zn/Cr were
synthesized by accelerated carbonation. The products were characterized by XRD, SEM, FT-IR and TG-DTGDSC-
MS. The chemical stability was tested by the modified Toxicity Characteristic Leaching Procedure (TCLP).
The results showed that the products were the mixture of CuxZn6 − xCr2(OH)16(CO3)·4H2O and (CuZn)2(CO3)
(OH)2, with similar thermal behavior. All products were chemically stable with reduced leaching at pH>6
(Cu2+, Zn2+) or >5 (Cr3+).

Keywords: Layered double hydroxides (LDHs), CuxZn6 −xCr2(OH)16(CO3)· 4H2O, Accelerated carbonation, Thermal behavior

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Informasi Detail

Judul Seri

Applied Clay Science

No. Panggil

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Penerbit

London : Elsevier B.V.., 2009

Deskripsi Fisik

Applied Clay Science 42 (2009) 591-596

Bahasa

English

ISBN/ISSN

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Klasifikasi

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Tipe Isi

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Tipe Media

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Tipe Pembawa

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Edisi

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Subjek

KIMIA

Info Detail Spesifik

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Pernyataan Tanggungjawab

agus

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