Preparation of silver supported porous 4A-zeolite through hard template agent combined with heat treatment and study on its catalytic performance

Catalytic Transformation of Positional Nitrophenol Isomers on Highly Active Ag/Linde‐Type A4 Zeolite: A Comparative Analysis

“…Zeolite A (NaA), also known as Linde Type A (LTA), is a microporous crystalline hydrated sodium aluminosilicate with numerous cavities and porous (the sodalite cage with a dimension of 0.8 nm, while the super cage is 1.2 nm and the pore size is 0.45 nm [10] ), commonly used as a commercial adsorbent for gas and water purification and ion exchange separation [30,31] . The synergetic effect between LTA zeolite and Ag NPs may lead to high catalytic efficiency toward the reduction of p‐ NP [10,32] . Due to the microporous nature of the zeolite combined with the reagents/products molecules dimensions (size above 0.5 nm in length and until 0.8 nm in width), the reaction proceeds on the external surface of the zeolite, where metallic NPs are stabilized.…”

“…[30,31] The synergetic effect between LTA zeolite and Ag NPs may lead to high catalytic efficiency toward the reduction of p-NP. [10,32] Due to the microporous nature of the zeolite combined with the reagents/products molecules dimensions (size above 0.5 nm in length and until 0.8 nm in width), the reaction proceeds on the external surface of the zeolite, where metallic NPs are stabilized. So, there is a substantial scientific interest in developing highly active catalysts capable to transform nitrophenol isomers (functional, positional or skeletal).…”