Comparison study of titania pillared interlayered clays and porous clay heterostructures modified with copper and iron as catalysts of the DeNOx process
Source abstract
Abstract
Abstract Natural montmorillonite was used as a raw material for the preparation of titania pillared clays (Ti-PILC) and porous clay heterostructures (Ti-PCH). Ti-PILC was produced by direct exchange of interlayer sodium cations in montmorillonite (sodium form) for titanium oligocations. Ti-PCH was obtained by the surfactant directed method. Tetraethylorthosilicate and titanium isopropoxide were used as the source of silica and titania, respectively. Copper and iron were introduced to Ti-PILC and Ti-PCH by the ion exchange method. The obtained materials were characterized with respect to chemical composition (EPMA), structure (XRD) and texture (BET), coordination and aggregation of transition metal species (UV–vis-DRS) and surface acidity (FT-IR). Modified montmorillonites were found to be active and selective catalysts for the reduction of NO with ammonia (DeNOx process) and their catalytic performance depended on the type of support (Ti-PILC or Ti-PCH) as well as deposited transition metal (Cu or Fe) species.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Catalytic Processes in Materials Science · Mesoporous Materials and Catalysis · Catalysis and Oxidation Reactions
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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