Hierarchical zeolites comprising orthogonally stacked bundles of zeolite nanosheets for catalytic and adsorption applications

被引：25

作者：

Chang, Albert ^{[1
]}

Yang, Tsung-Cheng ^{[2
]}

Chen, Ming-Yi ^{[1
]}

Hsiao, Hsu-Ming ^{[1
]}

Yang, Chia-Min ^{[1
,2
]}

机构：

[1] Natl Tsing Hua Univ, Dept Chem, Hsinchu 30013, Taiwan

[2] Natl Tsing Hua Univ, Frontier Res Ctr Fundamental & Appl Sci Matters, Hsinchu 30013, Taiwan

来源：

JOURNAL OF HAZARDOUS MATERIALS | 2020年 / 400卷

关键词：

Hierarchical zeolite; Green chemistry; Heterogeneous catalysis; Adsorbent; Lead; SELECTIVE PHENOL HYDROGENATION; BECKMANN REARRANGEMENT; AQUEOUS-PHASE; ACTIVE-SITES; HEAVY-METALS; CYCLOHEXANONE; REMOVAL; MICROPORES; GENERATION; MESOPORES;

D O I：

10.1016/j.jhazmat.2020.123241

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The synthesis of hierarchical MFI zeolites comprising orthogonally stacked bundles of zeolite nanosheets using a new type of triblock structure-directing agents (SDAs) was reported. The textural properties, including the degree of nanosheet branching and the spacing between adjacent nanosheets, could be controlled by changing the length of the linkers in the triblock SDAs. The hierarchical pure-silica silicalite-1 materials exhibited high and stable catalytic activity for the vapor-phase Beckmann rearrangement of cyclohexanone oxime with high selectivity of epsilon-caprolactam. On the other hand, the hierarchical ZSM-5 materials showed high adsorption capacity of Pb2+ ion following a Langmuir-type adsorption behavior. After being deposited with Pd nanoparticles, the hierarchical Pd/ZSM-5 nanocomposites exhibited high activity in the aqueous-phase hydrogenation of phenol to cyclohexanone at room temperature. The results show promise of the disclosed hierarchical zeolites for catalytic and adsorption applications.

引用

页数：9

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