Synthesis, characterization, and catalytic performance of hierarchical ZSM-11 zeolite synthesized via dual-template route

Fabrication of Cu-Encapsulated Hierarchical MEL Zeolites for Alkylation of Mesitylene with Benzyl Alcohol

“…Recently, it was found that the MEL zeolites showed special catalytic properties in the FC alkylation reactions. , Although the MEL zeolites possessed the similar topology structure with MFI zeolites, the MEL zeolites with two straight channels are more favorable for diffusion/transport of guest molecules than MFI zeolites . However, the existence of the sole microporous channel in a conventional MEL zeolite is not conducive to the reaction involving bulk molecules.…”

An efficient green protocol for the synthesis of 1,2,4,5-tetrasubstituted imidazoles in the presence of ZSM-11 zeolite as a reusable catalyst

“…The use of ZSM-11 is expected to give an efficient catalytic activity along with its moderate acidity as a heterogeneous catalyst. 22 The use of heterogeneous catalysts in various organic transformations is of great interest because they have many advantages such as suitable acidity, thermal stability, insolubility, simple work-up, recyclability, and being environmentally safe. 23–28 …”

Polyelectrolyte–Surfactant Mesomorphous Complex Templating: A Versatile Approach for Hierarchically Porous Materials

“…Hierarchically porous materials with well-defined morphologies, controllable mesostructures, interconnected hierarchical porosity on different length scales, and high specific surface area have been attracting great attention because of their wide applications in the fields of energy storage and conversion, catalysis, adsorption, separation, gas sensing, biology, and medicine. − As the properties are strongly dependent on the structures and morphologies of the materials, it is extremely significant to develop approaches for the fabrication of hierarchically porous materials with tailored porous structure and well-defined morphology. During the past few decades, a great number of strategies have been proposed for the synthesis of hierarchically porous materials, such as soft template methods with surfactants and emulsions, − template replication with silica microspheres − and metal oxide particles, , post-treatment methods (such as chemical etching and chemical vapor deposition), , dual template strategies, − and a template-free method. − Widespread attention has been focused on the soft template strategy based on the self-assembly of the surfactants since the Mobil scientists first proposed the concept of a “template” and synthesized ordered mesoporous silicas with cationic surfactant micelles. , With the aid of supramolecular templates, the pore size of materials could be extended from micropore to mesopore. Generally, to prepare hierarchically porous materials with bimodal or trimodal porous structure (micro−meso, meso–meso, meso–macro, and even micro−meso–macroporous), two or more surfactants with different molecular dimensions can be employed as the templates and colloidal particles are usually used as templates for macroporosity. − …”