Surface Diffusion Regulation of NanoZSM-5 for Catalysis Promotion on Methanol-to-propene

doi:10.1007/s40242-026-5280-4

Chemical Research in Chinese Universities ›› 2026, Vol. 42 ›› Issue (1): 151-157.doi: 10.1007/s40242-026-5280-4

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Surface Diffusion Regulation of NanoZSM-5 for Catalysis Promotion on Methanol-to-propene

SHENG Zhizheng¹, ZHOU Jian¹, YE Zhaoqi², WANG Tingting¹, WANG Weihua¹, WANG Yangdong¹, TENG Jiawei¹, XIE Zaiku^1,3

1. State Key Laboratory of Green Chemical Engineering and Industrial Catalysis, SINOPEC Shanghai Research Institute of Petrochemical Technology Co., Ltd., Shanghai 201208, P. R. China;
2. Department of Chemistry, Fudan University, Shanghai 200433, P. R. China;
3. China Petrochemical Corporation (SINOPEC Group), Beijing 100728, P. R. China

Received:2025-11-17 Online:2026-02-01 Published:2026-01-28
Contact: ZHOU Jian,E-mail:zhouj.sshy@sinopec.com E-mail:zhouj.sshy@sinopec.com
Supported by:
This work was supported by the National Key Research and Development Program of China (No. 2023YFA1507704) and the National Natural Science Foundation of China (Nos. U25B6005, 22293025, and U24A20488).

Abstract

Abstract: Mass transfer on surface of nano-zeolites plays an important impact on their catalytic performance. In this work, we investigated a diffusion-controlled strategy to regulate the interface effect and the dynamic behavior of guest molecules at the interface of nanoZSM-5 via chemical deposition of different silicon (Si) or tungsten (W) species, thereby affecting its performance in methanol to propylene (MTP) reaction. It was verified that only about 1% of sedimentary species form stable surface structures by binding with surface hydroxyl groups and defect hydroxyl groups. Under a pressure of 0.2—5 kPa, Si and W modification respectively increased the surface diffusion efficiency of methanol by 50% and decreased it by 60%, demonstrating the bidirectionality of the control strategy. Meanwhile, acidity and structural characterization confirmed that these properties were not strongly affected. Catalytic results showed that surface diffusion enhancement increased the selectivity of ethylene and propylene , and remained stable within 120 h. Mechanism studies have shown that the dynamics of the accumulated surface species is a key intermediate process that connects surface diffusion and catalytic performance.

Key words: Methanol to propene, Nanozeolite, Surface diffusion, Chemical deposition

SHENG Zhizheng, ZHOU Jian, YE Zhaoqi, WANG Tingting, WANG Weihua, WANG Yangdong, TENG Jiawei, XIE Zaiku. Surface Diffusion Regulation of NanoZSM-5 for Catalysis Promotion on Methanol-to-propene[J]. Chemical Research in Chinese Universities, 2026, 42(1): 151-157.

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Surface Diffusion Regulation of NanoZSM-5 for Catalysis Promotion on Methanol-to-propene

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