Improved lifetime and stability of copper species in hierarchical, copper-incorporated CuSAPO-34 verified by catalytic model reactions

The first successful synthesis of hierarchical CuSAPO-34 (3.9 wt% Cu) is reported using the polymer Pluronic F127 as a mesoporous structure directing agent (SDA). X-Ray absorption spectroscopy (XAS) revealed single site Cu 2+ with 4 nearest oxygen neighbours at 1.96 Å. A catalytic model reaction, th...

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Published in:Physical chemistry chemical physics : PCCP 2021-08, Vol.23 (31), p.16785-16794
Main Authors: Sørli, Guro, Azim, Muhammad Mohsin, Rønning, Magnus, Mathisen, Karina
Format: Article
Language:English
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Copper
Oxidation
Poloxamers
Reducing agents
X ray absorption
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description The first successful synthesis of hierarchical CuSAPO-34 (3.9 wt% Cu) is reported using the polymer Pluronic F127 as a mesoporous structure directing agent (SDA). X-Ray absorption spectroscopy (XAS) revealed single site Cu 2+ with 4 nearest oxygen neighbours at 1.96 Å. A catalytic model reaction, the selective reduction of NO with different sized hydrocarbons as reductants, explained that Cu 2+ is accessible and reactive in both micro- and mesopores of the hierarchical CuSAPO-34. The presence of mesopores resulted in superior lifetime of the hierarchical CuSAPO-34 in the catalytic model reaction, selective oxidation of propene. The first successful synthesis of hierarchical CuSAPO-34 (3.9 wt% Cu) is reported using the polymer Pluronic F127 as a mesoporous structure directing agent (SDA).
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subjects Copper
Oxidation
Poloxamers
Reducing agents
X ray absorption
title Improved lifetime and stability of copper species in hierarchical, copper-incorporated CuSAPO-34 verified by catalytic model reactions
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