沸石
催化作用
ZSM-5型
介孔材料
吸附
化学工程
材料科学
甲苯
碳纤维
纳米技术
化学
有机化学
复合材料
复合数
工程类
作者
María del Mar Alonso-Doncel,Cristina Ochoa‐Hernández,Gema Gómez-Pozuelo,Adriana Cristina de Oliveira,José González-Aguilar,A. Peral,R. Sanz,David Serrano
标识
DOI:10.1016/j.jechem.2023.01.023
摘要
The development of zeolites possessing dendritic features represents a great opportunity for the design of novel materials with applications in a large variety of fields and, in particular, in the energy sector to afford its transition towards a low carbon system. In the current work, ZSM-5 zeolite showing a dendritic 3D nanoarchitecture has been synthesized by the functionalization of protozeolitic nanounits with an amphiphilic organosilane, which provokes the branched aggregative growth of zeolite embryos. Dendritic ZSM-5 exhibits outstanding accessibility arising from a highly interconnected network of radially-oriented mesopores (3 – 10 nm) and large cavities (20 – 80 nm), which add to the zeolitic micropores, thus showing a well-defined trimodal pore size distribution. These singular features provide dendritic ZSM-5 with sharply enhanced performance in comparison with nano- and hierarchical reference materials when tested in a number of energy related applications, such as VOCs (toluene) adsorption (improved capacity), plastics (low-density polyethylene) catalytic cracking (boosted activity) and hydrogen production by methane catalytic decomposition (higher activity and deactivation resistance).
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