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journal article·2026-01Open access

Solvent‐Free Self‐Assembly to Ordered Mesoporous Poly (Pyridine@Schiff base) Catalysts for Efficient Upcycling of Waste Gaseous Sulfides from Natural Gas

Yong Zheng, Jiamin Yuan, Haobin Wu, Wentao Zhang, Xun Kan, Shuangyan Li, Shouchao Zhong, Zhiqiang Liu, Anmin Zheng, Fujian Liu, Lilong Jiang

Small· Volume 22· Issue 4
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Abstract

Abstract Transformation of volatile sulfides of carbonyl sulfide (COS) and hydrogen sulfide (H 2 S) into polysulfur from natural gas is the optimal route for their deep elimination and upcycling. Traditional catalysts show either poor sulfur‐resistance or unsatisfactory polysulfur transportation. Here an ordered mesoporous pyridine@Schiff base designed from solidothermal‐molten self‐assembly of triblock copolymer template (Pluronic F127) with 2,6‐diaminopyridine (DAP) monomer and terephthalaldehyde crosslinker is reported, which breaks the dominance of the resol route for nitrogen‐doped, ordered mesoporous polymer design. Strong hydrogen‐bond interaction between DAP and F127 ensures ordered mesoporosity formation, and condensation between DAP and phthalaldehyde yields poly(pyridine@Schiff base) framework. The resulting ordered mesoporous polymer and its derived ordered mesoporous carbon (RN‐OMC) possess record‐high nitrogen content and barrier‐free mesochannels. These structural features afford long‐term, continuous operation for the tandem conversion of COS and H 2 S to polysulfur (S x ). Under simulated natural gas conditions, the RN‐OMC achieves ≈100% conversion and selectivity, and it compares favorably with literature‐reported catalysts in the field.
Source: crossref · Quality: baseline

Research context

PolymersCatalysis & surfaces

OpenAlex topics: Covalent Organic Framework Applications · Membrane Separation and Gas Transport · Industrial Gas Emission Control

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

National Engineering Research Center of Chemical Fertilizer Catalyst (NERC‐CFC) School of Chemical Engineering Fuzhou University Fuzhou 350002 P. R. China

State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics National Center for Magnetic Resonance in Wuhan Wuhan Institute of Physics and Mathematics Innovation Academy for Precision Measurement Science and Technology Chinese Academy of Sciences Wuhan Hubei 430071 P. R. China

College of Chemistry and Materials Science Fujian Provincial Key Laboratory of Advanced Materials Oriented Chemical Engineering Fujian Normal University Fuzhou Fujian 350007 P. R. China

Qingyuan Innovation Laboratory Quanzhou Fujian 362801 P. R. China

Funding

Natural Science Foundation of Fujian Province · National Natural Science Foundation of China

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