课题组的论文“Negative effect of SO₂ on mercury removal over catalyst/sorbent from coal-fired flue gas and its coping strategies: A review”在Chemical Engineering Journal上（IF16.7, 中科院1区）发表

论文摘要：

Adsorption and catalytic oxidation are presently considered to be the most cost-effective and feasible methods for Hg⁰ removal from coal-fired flue gas. For most of the catalysts/sorbents developed so far, SO₂ poisoning remains a thorny issue for the long term operation. This review comprehensively discusses the negative effect of SO₂ on mercury removal over catalyst/sorbent from coal-fired flue gas and its coping strategies. Instructive conclusions are obtained, which can serve as a theoretical basis for the development of novel SO₂-resistant catalyst/sorbent for efficient abatement of Hg⁰. Briefly, there are four main reasons for the negative effect of SO₂ on Hg⁰ removal: Competitive adsorption, consumption of active species by SO₂, SO₂-induced Hg²⁺ reduction and sulfate formation. According to the inhibition mechanism of SO₂ on Hg⁰ removal, we think there are some feasible approaches and strategies for coping with the SO₂ poisoning problem: Increasing Hg⁰ affinity, suppressing SO₂ adsorption, inhibiting SO₂ oxidation, introducing sacrificial agent, increasing active sites, promoting sulfate decomposition and designing the micro/macro catalyst/sorbent structure. In addition, the adverse effect of SO₂ on Hg⁰ removal can be also weakened by the adjustment of operating parameters and process. Finally, future works to be conducted focused on the SO₂ resistance of catalyst/sorbent for mercury removal are proposed.

原文链接：https://doi.org/10.1016/j.cej.2022.140751