Naiqiang Yan
Shanghai Jiao Tong University
SelectivityAdsorptionSmeltingSelective catalytic reductionCatalysisDesorptionFlue gasX-ray photoelectron spectroscopyInorganic chemistryChemistryMaterials scienceNOxSorbentChemical engineeringSulfurOxygenMercury (element)RedoxReaction mechanismCatalytic oxidation
113Publications
30H-index
3,153Citations
Publications 119
Newest
#1Li Jiaxing (SJTU: Shanghai Jiao Tong University)H-Index: 3
#2Haomiao Xu (SJTU: Shanghai Jiao Tong University)H-Index: 23
Last. Zan Qu (SJTU: Shanghai Jiao Tong University)H-Index: 30
view all 8 authors...
Abstract null null Conversion of gaseous elemental mercury (Hg0) to its higher valence state is essential for mercury control using the current air pollution devices from industrial flue gas. Traditional technologies often use selective catalytic reduction (SCR) units to enhance the Hg0 oxidation performance but highly depend on the high-temperature catalysts, the presence of HCl, and the downstream liquid absorption system. This study proposes a novel method coupled with a low-temperature catal...
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#1Sichao Li (SJTU: Shanghai Jiao Tong University)H-Index: 3
#2Huang Wenjun (SJTU: Shanghai Jiao Tong University)H-Index: 18
Last. Naiqiang Yan (SJTU: Shanghai Jiao Tong University)H-Index: 30
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Abstract null null Oxidation of sulfite and competitive absorption existed in Na2SO3 solution for simultaneous removal of NOx and SO2, inhibited the long-term high-efficiency when used for practical applications. A matching strategy was developed to solve these problems. Antioxidants combination was used to retard the oxidation of antioxidant and enhance inhibition of S(IV) (tetravalent sulfur) oxidation. Hydroquinone (HQ) and sodium thiosulfate (ST) showed a positive synergistic effect on inhib...
1 CitationsSource
#1Longlong Wang (SJTU: Shanghai Jiao Tong University)H-Index: 3
#2Ji Leipeng (SJTU: Shanghai Jiao Tong University)H-Index: 1
Last. Zan Qu (SJTU: Shanghai Jiao Tong University)H-Index: 30
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Abstract null null Transition metal sulfides have attracted great interest in nonferrous smelting industries for elemental mercury (Hg0) capture owing to their high activity, low cost and resistance to SO2. However, the major obstacle was the deactivation of active sites in adsorbents after the use or at high temperature. Herein, we fabricated rhombic dodecahedral Cu2S hollow nanocages by using high-quality Cu2O crystals as sacrificial templates. Benefiting from the unique structure and composit...
3 CitationsSource
#1Pang Xingyu (SJTU: Shanghai Jiao Tong University)
#2Wei Liu (SJTU: Shanghai Jiao Tong University)H-Index: 56
Last. Naiqiang Yan (SJTU: Shanghai Jiao Tong University)H-Index: 30
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Abstract null null Gaseous SO3 and mercury in the SO2-rich gas have aroused the complexity of multi-pollutants formation and are difficult for disposal. We here proposed a dry-flue gas purification method to capture these two pollutants above the SO3 boiling points (>180 °C), cutting off the downstream transformation. The selective uptake of SO3 and Hg0 at a high temperature from SO2-rich conditions is a challenge. The alkaline sorbent and chalcogen-based active sites were assembled to realize t...
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#1Wang JiananH-Index: 1
#2Huang WenjunH-Index: 18
Last. Naiqiang YanH-Index: 30
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#1Renyi Xie (SJTU: Shanghai Jiao Tong University)
#2Lei Ma (SJTU: Shanghai Jiao Tong University)H-Index: 30
Last. Naiqiang Yan (SJTU: Shanghai Jiao Tong University)H-Index: 30
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Abstract null null Sulfated CeO2 cubes were prepared by the impregnation of CeO2 cubes by ammonium sulfates, and further evaluated in selective catalytic reduction of NOx with ammonia (NH3-SCR). Catalytic activity tests indicated that NOx reduction conversions and N2 selectivity of sulfated CeO2 cubes could be significantly improved compared to pure CeO2 cubes. The synthesized sulfated CeO2 cubes were further characterized by atom-resolved high angle annular dark-field (HAADF), Fourier-transform...
1 CitationsSource
#1Li Jiaxing (SJTU: Shanghai Jiao Tong University)H-Index: 3
#2Haomiao Xu (SJTU: Shanghai Jiao Tong University)H-Index: 23
Last. Zan Qu (SJTU: Shanghai Jiao Tong University)H-Index: 30
view all 7 authors...
Mercury, as a highly poisonous pollutant, poses a severe threat to the global population. However, the removal of Hg0 can only be carried out at below 100 °C due to the weak binding of the adsorbent. Herein, a series of carbon-based materials with different coordination environments and atomic dispersion of single-site manganese were prepared, and their elemental mercury removal performance was systematically investigated. It was demonstrated that the coordination environment around manganese de...
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#1Feng Shi (SJTU: Shanghai Jiao Tong University)H-Index: 1
#2Kan Li (SJTU: Shanghai Jiao Tong University)H-Index: 20
Last. Xiaojing Zhang (Zhengzhou University of Light Industry)H-Index: 19
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Abstract Wet flue gas desulfurization is considered as one of the most effective methods for the simultaneous removal of NOX and SO2 in the flue gas. To investigate the absorption performance of NOX and SO2 with the absorbents of Na2SO3 and (NH4)2SO3 and study the controlling factors of the process, the sulfite-based mixed absorbents with different mass concentration ratios of Na2SO3 to (NH4)2SO3 are employed for the gas removal in a bubble absorber. The results indicate that the absorbents have...
1 CitationsSource
#1Qinyuan Hong (SJTU: Shanghai Jiao Tong University)H-Index: 5
#2Haomiao Xu (SJTU: Shanghai Jiao Tong University)H-Index: 23
Last. Naiqiang Yan (SJTU: Shanghai Jiao Tong University)H-Index: 30
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Abstract Inducing gaseous substances to migrate inward into a solid material is one of the effective methods to improve the interfacial adsorption stability. However, the gaseous mercury (Hg0) adsorption on bulk material, especially mineral sulfides, generally occurred on the outer surface owing to their compact structure, resulting in the low bonding stability. This study prepared porous ZnO@CuS with different shell thickness to investigate mercury adsorption performance and bonding stability. ...
8 CitationsSource
#1Haomiao Xu (SJTU: Shanghai Jiao Tong University)H-Index: 23
#2Qinyuan Hong (SJTU: Shanghai Jiao Tong University)H-Index: 5
Last. Naiqiang Yan (SJTU: Shanghai Jiao Tong University)H-Index: 30
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