Enhancing SO2 resistance in vanadium catalysts with tungsten disulfide for NH3-SCR

IF 13.3 1区工程技术 Q1 ENGINEERING, CHEMICAL

Chemical Engineering Journal Pub Date : 2025-02-04 DOI:10.1016/j.cej.2025.160191

Donghyeok Kim, Myeung-Jin Lee, Yejin Choi, Jongkyoung Kim, Bora Jeong, Bora Ye, Seungho Cho, Hong-Dae Kim

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引用次数: 0

Abstract

NO_x emissions are a major environmental issue, and NH₃-SCR is a key method for their control. V-based catalysts perform well at high temperatures; however, SO₂-poisoning remains a critical issue for NH₃-SCR catalysts under low-temperature conditions. In this study, we develop an effective strategy of loading a stable sulfide two-dimensional (2D) material, WS₂, to enhance the SO₂ resistance of existing commercial V/Ti catalysts. In-situ DRIFTS analysis and spent SO₂-poisoning catalyst analyses are conducted to clarify the enhanced SO₂ resistance mechanism. These findings demonstrate that the superior SO₂ resistance can be attributed to the suppression of SO₂ by WS₂. Therefore, WS₂ loading inhibits the SO₂ adsorption and protects the NH₃ species adsorption, thereby enhancing the SO₂ resistance and low-temperature activity. This research can be utilized without changing the catalyst synthesis process, allowing it to be applied to current commercial catalysts, thereby underscoring its remarkable potential for industrial applications.

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来源期刊

Chemical Engineering Journal 工程技术-工程：化工

CiteScore

21.70

自引率

9.30%

发文量

6781

审稿时长

2.4 months

期刊介绍： The Chemical Engineering Journal is an international research journal that invites contributions of original and novel fundamental research. It aims to provide an international platform for presenting original fundamental research, interpretative reviews, and discussions on new developments in chemical engineering. The journal welcomes papers that describe novel theory and its practical application, as well as those that demonstrate the transfer of techniques from other disciplines. It also welcomes reports on carefully conducted experimental work that is soundly interpreted. The main focus of the journal is on original and rigorous research results that have broad significance. The Catalysis section within the Chemical Engineering Journal focuses specifically on Experimental and Theoretical studies in the fields of heterogeneous catalysis, molecular catalysis, and biocatalysis. These studies have industrial impact on various sectors such as chemicals, energy, materials, foods, healthcare, and environmental protection.