Design Synthesis of ITE Zeolite Using Nickel-Amine Complex as an Efficient Structure-Directing Agent

Area of Science:

• Materials Science
• Catalysis
• Inorganic Chemistry

Background:

• Traditional zeolite synthesis relies on expensive organic structure-directing agents.
• Developing cost-effective and efficient synthesis routes for zeolites is crucial for industrial applications.

Purpose of the Study:

• To report the design and synthesis of aluminosilicate zeolite with ITE structure.
• To utilize an inexpensive nickel-amine complex as a novel structure-directing agent.
• To evaluate the catalytic performance of the synthesized zeolite for CO2 hydrogenation.

Main Methods:

• Synthesis of aluminosilicate zeolite using nickel-pentaethylenexamine as a structure-directing agent.
• Characterization using X-ray diffraction, scanning electron microscopy, N2 sorption isotherms, and 27Al magic-angle spinning NMR.
• Catalytic testing for the hydrogenation of CO2 into methane.

Main Results:

• Successfully synthesized ITE zeolite with high crystallinity and perfect crystal morphology.
• The synthesized zeolite exhibits a large surface area and abundant framework aluminum species.
• Ni-ITE zeolite demonstrated enhanced catalytic performance in CO2 hydrogenation compared to conventional nickel catalysts.

Conclusions:

• The nickel-amine complex serves as an effective and economical structure-directing agent for aluminosilicate zeolite synthesis.
• This method offers a facile alternative for producing high-performance aluminosilicate zeolites.
• The Ni-ITE zeolite shows promise as a catalyst for CO2 conversion into methane.