The synthesis of a hierarchical SSZ-13 zeolite with mesopores and micropores is one of the most effective strategies to overcome the diffusion limitation imposed by the micropores of SSZ-13 in reactions involving bulky reactants or intermediates. A zeolite with nanosheet morphology possesses the advantages of large inter-sheet mesopore volume, more accessible acid sites and short diffusion path lengths. Nevertheless, only a few works focused on the synthesis of the nanosheet-assembled SSZ-13 zeolite. In this work, a nanosheet-assembled hierarchical SSZ-13-TP_0.03 (thickness of 20 nm) zeolite was synthesized in a seed-assisted synthesis system by coupling a small amount of N, N, N-trimethyl-1-adamantylammonium hydroxide (TMAdaOH) with octadecyl-(3-trimethoxysilylpropyl)-ammonium chloride (TPOAC). In this strategy, the Si/Al ratio of the initial gel, seed, TPOAC and TMAdaOH amount in the synthesis system and the synergistic effects among them lead to the synthesis of SSZ-13 samples with various textural properties and morphologies. The distinct textural properties and morphologies of SSZ-13 result in the preparation of Pt/SSZ-13 catalysts with varied Pt dispersions. The catalyst, Pt supported on the nanosheet-assembled hierarchical SSZ-13 (Pt/SSZ-13-TP_0.03), exhibits higher hydrogenation ability than its corresponding catalyst, Pt supported on microporous or hierarchical SSZ-13 in the hydrogenation of naphthalene.

中文翻译：

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通过少量 TMAdaOH 与 TPOAC 偶联，种子辅助合成纳米片组装的分级 SSZ-13 沸石

具有介孔和微孔的分级SSZ-13沸石的合成是克服SSZ-13微孔在涉及大体积反应物或中间体的反应中所施加的扩散限制的最有效策略之一。具有纳米片形貌的沸石具有片间介孔体积大、更容易接近的酸性位点和短扩散路径长度的优点。然而，只有少数工作专注于纳米片组装 SSZ-13 沸石的合成。在这项工作中，通过偶联少量的N，N，N-三甲基-1-金刚烷基氢氧化铵，在种子辅助合成系统中合成了纳米片组装的分级SSZ-13-TP _0.03 （厚度为20 nm）沸石（ TMAdaOH) 与十八烷基-(3-三甲氧基甲硅烷基丙基)-氯化铵 (TPOAC)。在该策略中，合成体系中初始凝胶、晶种、TPOAC和TMDaOH量的Si/Al比以及它们之间的协同效应导致合成具有各种结构性质和形貌的SSZ-13样品。 SSZ-13 独特的结构性质和形态导致可以制备具有不同 Pt 分散度的 Pt/SSZ-13 催化剂。纳米片组装的多级SSZ-13负载Pt催化剂(Pt/SSZ-13-TP _0.03 )在萘加氢中比相应的微孔或多级SSZ-13负载Pt催化剂表现出更高的加氢能力。