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Montmorillonite, vermiculite and saponite based porous clay heterostructures modified with transition metals as catalysts for the DeNOx process

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Abstract.
Porous clay heterostructures (PCHs) were synthesized from natural montmorillonite and vermiculite as
well as synthetic saponite using the surfactant directed method. The direct synthesis of PCHs from
saponite and montmorillonite was possible, while the pre-treatment of parent vermiculite with acids
was necessary prior to the intercalation step. The PCH samples were characterized with respect to their
composition (EPMA), structure (XRD, UV–vis-DRS), texture (BET), surface acidity (FT-IR) and chemical
nature of the deposited transition metal species (UV–vis-DRS). Porous clay heterostructures as well as
their derivativesmodified by deposition of transition metal (Cu, Fe) oxides were tested as catalysts for the
DeNOx process. The transitionmetal containing PCH samples were found to be active, selective and stable
catalysts of this process. Their catalytic performance depended on the kind of the parent clay used for the
PCH synthesis as well as deposited transition metals.

Keywords: Porous clay heterostructures (PCHs), Montmorillonite, Vermiculite, Saponite, DeNOx, Ammonia

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Informasi Detail

Judul Seri

Applied Catalysis B: Environmental

No. Panggil

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Penerbit

London : Elsevier B.V.., 2009

Deskripsi Fisik

Applied Catalysis B: Environmental 88 (2009) 331–340

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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