Facile fabrication of a plate-like ZSM-5 zeolite as a highly efficient and stable catalyst for methanol to propylene conversion

Research and Application Development of Catalytic Redox Technology for Zeolite-Based Catalysts

“…Subsequently, lower olefins were produced in the aromatic cycle (as shown in Figure 3, red frame). Moreover, lower-density plate-like MFI can effectively inhibit the circulation of aromatic hydrocarbon groups, promote the hydrocarbon cycle, and exhibit excellent stability [37]. * Si/Ga determined by ICP.…”

Controlling the morphologies and crystal growth orientations of H-ZSM-5: their impact on the structure-diffusion-performance relationship in the methanol-to-propylene reaction

“…These plate-like ZSM-5 zeolites with lower acid density effectively suppressed the aromatic-based cycle and promoted the olefin-based cycle, leading to a higher selectivity to propylene in MTP conversion. 25 Li et al 26 used a ZSM-5 nanosheet (NS) seed and n -butylamine (NBA) template to prepare twin-free nanoslab ZSM-5 zeolite with b -axis thickness of 60–90 nm; the nanoslab ZSM-5 showed a high 48.1% selectivity to propylene and 192 h lifetime in the MTP reaction. Luo et al 27 also used a seed-induced preparation method with a silica sol solution to prepare short b -axis ZSM-5 nano-sheets; the best nano-sheet HT-ZSM-5-SM zeolite shows a 355 h catalytic life, and the selectivity of propylene can reach about 51%.…”

Evaluating the efficacy of zeolites synthesized from natural clay for the methanol-to-hydrocarbon process

“…[14][15][16][17] On the other hand, medium-pore zeolites (10-membered rings) permitted the passage of relatively larger diameter molecules, such as benzene, toluene, and xylene (BTX). This consideration allowed for the manipulation of medium-pore zeolite properties, enabling their application as catalysts in the methanol-to-propylene (MTP) [18][19][20][21][22] or MTA [23][24][25] processes to maximize the production of propylene or BTX, respectively. Large-pore zeolites (12-membered rings) extended the range of producible molecules to include compounds like alkylated benzenes and elongated paraffinic (gaso-line-ranged) hydrocarbons.…”