China Automotive Technology and Research Center Co. Ltd

Catarc Automotive Test Center (Tianjin) Co., Ltd

Hanming Wu

Zhixin Wu

Li Zhang

Lingfeng Jia

Jianhai Wang

Kaixiang Li

Yuankai Shao

Zhenguo Li

Cheng Lv

Xiaoning Ren

The present disclosure provides msect-4 molecular sieves with OFF and ERI topologies, a preparation method therefor, and applications thereof. An eight-membered ring small pore molecular sieve used as a raw material is dispersed in an aqueous phase. Following that, caustic potash, an aluminum source, and an organic structure-directing agent (OSDA) are added. The pH value is then adjusted to be greater than 10, and a silicon source is introduced to attain the desired silicon-aluminum ratio, followed by stirring reaction, aging, crystallization, filtration, washing, ammonia exchange reaction, drying, and calcination. The msect-4 molecular sieves with OFF and ERI topologies, the preparation method therefor, and applications exhibit excellent hydrothermal stability, a plurality of adsorption sites exposed by a regular bone-like structure, and a large specific surface area. Consequently, this molecular sieves find applicability across various technical fields including selective catalytic reduction, passive adsorption, and catalytic cracking, and has broad application prospects.

MSECT-4 molecular sieves with off and ERI topologies, preparation method therefor, and applications thereof

Growing community of inventors

Tianjin, China

Hanming Wu