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学者姓名：肖益鸿
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Abstract ：
Selective adsorption of sulfur dioxide (SO2) is an important clean technology for purification of exhaust gas from fossil fuel combustion. The widely applied zeolite-based adsorbents interact with SO2 through weakly physical adsorption, resulting in low adsorption capacity and selectivity for SO2. Herein, a facile strategy that combines improving the textural property of zeolite and optimizing adsorption sites is developed for efficient and stable SO2 adsorption. The micro-mesoporous silica sphere (MS) with high specific surface area and well-defined pore structure is obtained through a micelle expander assisted soft-template method, which can facilitate the dispersion and exposure of designed adsorption sites- methylated polyethyleneimine (mPEI). Since the Lewis basic sites of N in mPEI can strongly interact with the pi-receptor SO2, and the tertiary amine groups exhibit a weak attraction for CO2, the optimized MS supported mPEI adsorbent exhibits remarkable SO2 adsorption performance (7.5 mmol/g), exceptionally high SO2/N2 selectivity (16673) and SO2/CO2 selectivity (551). Moreover, it presents an outstanding stability in the adsorption-regeneration test. This work sheds light on the design of high-performance organic-solid composite adsorbent for selective capture of SO2.
Keyword ：
Adsorption Adsorption Micro-mesoporous silica sphere Micro-mesoporous silica sphere Polytertiary amine Polytertiary amine Selective desulfurization Selective desulfurization SO 2 capture SO 2 capture
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| GB/T 7714 | Zhang, Qiongdan , Wei, Jixiang , Gao, Changbo et al. Highly selective capture of SO2 with supported micro-mesoporous silica sphere from CO2-rich environment [J]. | JOURNAL OF CLEANER PRODUCTION , 2024 , 436 . |
| MLA | Zhang, Qiongdan et al. "Highly selective capture of SO2 with supported micro-mesoporous silica sphere from CO2-rich environment" . | JOURNAL OF CLEANER PRODUCTION 436 (2024) . |
| APA | Zhang, Qiongdan , Wei, Jixiang , Gao, Changbo , Zheng, Yong , Xiao, Yihong , Liu, Fujian et al. Highly selective capture of SO2 with supported micro-mesoporous silica sphere from CO2-rich environment . | JOURNAL OF CLEANER PRODUCTION , 2024 , 436 . |
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The amine -based materials pose high potential for the adsorption of sulfur dioxide (SO 2 ). This work is aimed at modulating the morphologies of SBA -15 adsorbents by controlling the precursor self -assembly processes, for the sake of optimizing the utilization efficiency of amine species in the polytertiary amine (PTA)-functionalized SBA15. It results that worm -like SBA -15 (WLS) material shows a better particle aspect ratio and well-defined pore structure, which helps to optimize the adsorption sites invoked by the preferable dispersion and exposure of PTA, thus amplifying the chemisorption of SO 2 on the adsorbent. Consequently, the functionalized WLS-PTA adsorbent exhibits remarkable SO 2 adsorption performance (15.43 mmol/g), exceptionally high selectivities of SO 2 /N 2 (27522) and SO 2 /CO 2 (652). Surprisingly, the desulfurization capacity can be further enhanced by the positive effect of the water vapor co -fed. It is unveiled that the whole SO 2 adsorption process mainly follows the dual site Langmuir-Freundlich isotherm model and Bangham model. This work sheds light on the design of polymer -solid composite adsorbents for selective capture of SO 2 .
Keyword ：
Mesoporous SBA-15 Mesoporous SBA-15 Polytertiary amine Polytertiary amine Selective desulfurization Selective desulfurization SO2 adsorption SO2 adsorption Solid amine adsorbent Solid amine adsorbent
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| GB/T 7714 | Zhang, Qiongdan , Lei, Yuanyi , Ye, Ming et al. Facilely tuning the morphologies of tertiary amine-functionalized SBA-15 for optimizing selective SO 2 capture [J]. | CHEMICAL ENGINEERING JOURNAL , 2024 , 487 . |
| MLA | Zhang, Qiongdan et al. "Facilely tuning the morphologies of tertiary amine-functionalized SBA-15 for optimizing selective SO 2 capture" . | CHEMICAL ENGINEERING JOURNAL 487 (2024) . |
| APA | Zhang, Qiongdan , Lei, Yuanyi , Ye, Ming , Wang, Heng , Zheng, Yong , Xiao, Yihong et al. Facilely tuning the morphologies of tertiary amine-functionalized SBA-15 for optimizing selective SO 2 capture . | CHEMICAL ENGINEERING JOURNAL , 2024 , 487 . |
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Abstract ：
The efficient adsorption of sulfur dioxide (SO2) is crucial for purifying exhaust gases, and zeolites are promising adsorbents due to their low cost and excellent stability. However, developing FAU-type zeolites with high adsorption capacities and selectivities remains challenging due to their narrow pores and limited adsorption sites. Herein, an additive-free synthesis strategy is proposed to facilely obtain NaX zeolites (X-HCL) with the house-of-card-like morphology. The hierarchical structure of X-HCL not only benefits the removal of SO2 through favorable spatial diffusion, but also promotes the loading of basic adsorption sites- [caprolactam] [tetrabutylammonium bromide] (CT) ionic liquid. The obtained CT/X-HCL adsorbent demonstrates remarkable SO2 adsorption capacity (10.58 mmol/g) and cyclic stability, as well as great selectivity of SO2/N-2 (1673) and SO2/ CO2 (219) due to the strong affinity of CT towards SO2. Moreover, co-feeding with water vapor benefits the adsorption of SO2 on CT/X-HCL owing to the enhanced chemisorption of hydrated CT for SO2. This research provides new insights into the construction of hierarchical zeolite for efficient adsorption and separation of SO2.
Keyword ：
Hierarchical Hierarchical House-of-card-like morphology House-of-card-like morphology Ionic liquid Ionic liquid NaX zeolite NaX zeolite Sulfur dioxide adsorption Sulfur dioxide adsorption
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| GB/T 7714 | Zhang, Qiongdan , Ye, Ming , Lei, Yuanyi et al. Additive-free synthesis of house-of-card NaX zeolite for supporting amine: An efficient adsorbent for SO2 removal [J]. | SEPARATION AND PURIFICATION TECHNOLOGY , 2024 , 354 . |
| MLA | Zhang, Qiongdan et al. "Additive-free synthesis of house-of-card NaX zeolite for supporting amine: An efficient adsorbent for SO2 removal" . | SEPARATION AND PURIFICATION TECHNOLOGY 354 (2024) . |
| APA | Zhang, Qiongdan , Ye, Ming , Lei, Yuanyi , Wang, Heng , Zheng, Yong , Xiao, Yihong et al. Additive-free synthesis of house-of-card NaX zeolite for supporting amine: An efficient adsorbent for SO2 removal . | SEPARATION AND PURIFICATION TECHNOLOGY , 2024 , 354 . |
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It is essential to develop catalysts that demonstrate outstanding catalytic activity and N2 selectivity to effectively purify NH3-containing waste gas through selective oxidation of NH3. Herein, we present a facile strategy to construct high-performance CuO-based catalysts through the incorporation of niobium (Nb) component. The Nb species with molar ratios of 0.05-0.2 could enter the CuO lattice and generate Cu-O-Nb bonds, resulting in lattice distortion and weakened Cu-O bond, which enhanced the redox properties as well as surface acidity of CuO. The catalytic activity was improved by the increased Cu+, surface chemisorbed oxygen species, and weak acid sites, while N2 selectivity was promoted mainly due to the generation of moderate and strong acid sites. The catalyst with a relatively low content of Nb (molar ratio of 0.1) exhibited optimal redox properties and surface acidity, which facilitated the reaction to proceed through both imide and i-SCR mechanisms, resulting in significantly enhanced catalytic activity, stability, and N2 selectivity compared to CuO. This investigation underscores the importance of dual modification of redox properties and surface acidity of catalysts for improving catalytic performance.
Keyword ：
CuO-based catalysts CuO-based catalysts Nb-incorporation Nb-incorporation NH 3-SCO reaction NH 3-SCO reaction Redox property Redox property Surface acidity Surface acidity
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| GB/T 7714 | Pang, Lei , Gao, Mengjie , Lin, Jia et al. Redox-acidity dual modification of CuO by niobium-incorporation for enhanced selective catalytic oxidation of NH3 [J]. | SEPARATION AND PURIFICATION TECHNOLOGY , 2024 , 354 . |
| MLA | Pang, Lei et al. "Redox-acidity dual modification of CuO by niobium-incorporation for enhanced selective catalytic oxidation of NH3" . | SEPARATION AND PURIFICATION TECHNOLOGY 354 (2024) . |
| APA | Pang, Lei , Gao, Mengjie , Lin, Jia , Zheng, Yong , Xiao, Yihong , Zheng, Ying et al. Redox-acidity dual modification of CuO by niobium-incorporation for enhanced selective catalytic oxidation of NH3 . | SEPARATION AND PURIFICATION TECHNOLOGY , 2024 , 354 . |
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Catalytic combustion shows promise in mitigating methane emissions from natural gas utilization, while the presence of sulfur species in natural gas can cause significant catalyst deactivation. Herein, a dual-modification strategy is proposed to construct active and sulfur-resistant nickel oxide (NiO)-based catalysts. Through regulating the hydrolysis of the silicon (Si) precursor and the precipitation of zirconium (Zr) and nickel (Ni) precursors, both the Si and Zr component could enter NiO lattice to generate strong interactions, leading to a decrease in crystallite size, an increase in active Ni2+ and surface adsorbed oxygen species for the efficient methane combustion. The incorporation of Si prominently enhanced the surface acidity of catalysts to inhibit the sulfating of NiO; the introduced Zr component also contributed to the generation of surface acid sites, and had a preferential interaction with sulfur dioxide (SO2) to protect Ni2+ sites. Consequently, the small NiO crystallites, active Ni2+ and oxygen species could be maintained in dual-modified catalysts under sulfur-containing reaction conditions, leading to the superior catalytic performance compared to NiO or catalysts modified by Zr or Si. This work introduces a practical and efficient approach for developing catalysts to remove gaseous pollutants.
Keyword ：
Catalytic combustion of methane Catalytic combustion of methane Modified NiO Modified NiO Si and Zr-incorporation Si and Zr-incorporation Sulfur-resistance Sulfur-resistance Surface acidity Surface acidity
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| GB/T 7714 | Tian, Chengchen , Lin, Jia , Lin, Li et al. A silicon-zirconium dual-modified nickel oxide with high activity and sulfur-resistance for catalytic combustion removal of methane [J]. | JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING , 2024 , 13 (1) . |
| MLA | Tian, Chengchen et al. "A silicon-zirconium dual-modified nickel oxide with high activity and sulfur-resistance for catalytic combustion removal of methane" . | JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING 13 . 1 (2024) . |
| APA | Tian, Chengchen , Lin, Jia , Lin, Li , Zheng, Yong , Xiao, Yihong , Zheng, Ying . A silicon-zirconium dual-modified nickel oxide with high activity and sulfur-resistance for catalytic combustion removal of methane . | JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING , 2024 , 13 (1) . |
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Abstract ：
本实用新型公开了一种在线装卸料固定床填料塔，在其一端设有进气口，另一端设有出气口，填料塔内设有多个分隔板，每个分隔板上分别设置一通孔，分隔板将填料塔的内腔分隔为进气腔和若干个填料吸附腔，每个填料吸附腔中安装有环形填料层，环形填料层安装在分隔板的远离进气口的一侧面，环形填料层的中部形成一进气通道，进气通道的一端与通孔连通，其另一端密封，环形填料层的外侧与填料塔的内侧面形成一环腔，环腔与其相邻的下一个填料吸附腔中的环形填料层的进气通道相连通。本实用新型在环形填料层中采用径向独立通气方式，其通气面积大，阻力小，且与同等通气面积的轴向吸附塔相比，占地面积小，且压力降小，适用于填料需通过大幅变温的工况。
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| GB/T 7714 | 江莉龙 , 郑勇 , 曹彦宁 et al. 一种在线装卸料固定床填料塔 : CN202320979996.X[P]. | 2023-04-26 00:00:00 . |
| MLA | 江莉龙 et al. "一种在线装卸料固定床填料塔" : CN202320979996.X. | 2023-04-26 00:00:00 . |
| APA | 江莉龙 , 郑勇 , 曹彦宁 , 刘时球 , 肖益鸿 . 一种在线装卸料固定床填料塔 : CN202320979996.X. | 2023-04-26 00:00:00 . |
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The development of efficient and stable nanocatalysts is crucial for the catalytic removal of H2S through selective oxidation to sulfur. Inspired by the different catalytic activity and selectivity of CeO2 and MnO2 for the reaction, cerium-manganese (Ce-Mn) nanocomposite oxides with tunable phase structure and unique surface properties were constructed to optimize the catalytic performance. By regulating the molar ratio of Ce and Mn components, a novel catalyst structure comprising Ce-Mn solid solution and amorphous CeO2 is synthesized from Ce-Mn oxide with n(Ce)/n(Mn) ratio of 0.5 (50Ce-Mn). Compared with the unmodified MnO2, the tailored 50Ce-Mn possesses a high specific surface area, which facilitates the access of reactants to active sites and the desorption of formed sulfur. More importantly, strong Ce-Mn interaction and abundant surface-active oxygen species are generated, contributing to the regeneration of Mn4+/Ce4+ active sites, facilitating the formation of sulfur, and inhibiting the accumulation of sulfates during the reaction. Consequently, 50Ce-Mn presents a superior catalytic activity (T-100 of 150 degrees C), stability, and sulfur selectivity even under relatively high weight hourly space velocity conditions (23,000 mL center dot g(-1)center dot h(-1)). This study provides an example of how catalytic performance can be boosted through phase structure regulation on nanocomposites.
Keyword ：
cerium-manganese nanocatalysts cerium-manganese nanocatalysts electron transfer electron transfer H2S-selective catalytic oxidation H2S-selective catalytic oxidation oxygen vacancy oxygen vacancy phase structure phase structure
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| GB/T 7714 | Zhang, Qiongdan , Zheng, Chengcheng , Zhang, Ke et al. Ce-Mn Oxide Nanocomposites for Catalytic Removal of H2S [J]. | ACS APPLIED NANO MATERIALS , 2023 , 6 (4) : 2585-2595 . |
| MLA | Zhang, Qiongdan et al. "Ce-Mn Oxide Nanocomposites for Catalytic Removal of H2S" . | ACS APPLIED NANO MATERIALS 6 . 4 (2023) : 2585-2595 . |
| APA | Zhang, Qiongdan , Zheng, Chengcheng , Zhang, Ke , Zheng, Yong , Xiao, Yihong , Jiang, Lilong . Ce-Mn Oxide Nanocomposites for Catalytic Removal of H2S . | ACS APPLIED NANO MATERIALS , 2023 , 6 (4) , 2585-2595 . |
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The selective removal of sulfur dioxide (SO2) is of importance for the desulfurization and purification of exhaust gases, but it is still challenging to design adsorbents with high capture capacities (particularly at low partial pressures) and great cyclic stability. Herein, a facile strategy is proposed to optimize the adsorption performance of NaY zeolites, where various alcohol-terminated compounds (n-pentanol, ethylene glycol, polyethylene glycol) with different molecular structures are introduced as auxiliaries to facilitate the zeolite nucleation process and the formation of microporous structures. These alcohols promote the crystallization of NaY, increase the specific surface area and expand the microporosity due to the formation of micelles during synthesis. Coupled with the rise of surface basic sites, the chemisorption and physisorption of SO2 on designed zeolites is considerably improved. The PEG-Y sample derived from polyethylene glycol gives the highest dynamic adsorption of SO2 (315 mg/g), high-level SO2 equilibrium adsorption (2.18 mmol/g) under exceptionally low pressure (0.002 bar), preferred separation performance of SO2 from SO2/N2, robust stability and great regenerability. This technique can be further employed to fabricate analogous adsorbents for other gas adsorption and separation processes.
Keyword ：
Adsorption Adsorption Alcohol -terminated compounds Alcohol -terminated compounds Deep desulfurization Deep desulfurization NaY zeolite NaY zeolite SO 2 capture SO 2 capture
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| GB/T 7714 | Zhang, Qiongdan , Zhao, Xinhua , Zheng, Yong et al. Facile synthesis of regenerable NaY zeolite adsorbent relying on alcohol-terminated compounds for efficient trace sulfur dioxide capture [J]. | CHEMICAL ENGINEERING JOURNAL , 2023 , 475 . |
| MLA | Zhang, Qiongdan et al. "Facile synthesis of regenerable NaY zeolite adsorbent relying on alcohol-terminated compounds for efficient trace sulfur dioxide capture" . | CHEMICAL ENGINEERING JOURNAL 475 (2023) . |
| APA | Zhang, Qiongdan , Zhao, Xinhua , Zheng, Yong , Xiao, Yihong , Li, Jinhui , Liu, Fujian et al. Facile synthesis of regenerable NaY zeolite adsorbent relying on alcohol-terminated compounds for efficient trace sulfur dioxide capture . | CHEMICAL ENGINEERING JOURNAL , 2023 , 475 . |
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Catalytic combustion holds great promise for eliminating unburned methane released by the natural gas industry, and the crucial factor is the development of cost-effective and efficient catalysts. Herein, the silicon component was introduced into nickel oxide by simultaneously regulating the precipitation of nickel precursors and the hydrolysis of silicon precursors. The generation of SiO4 groups in NiO inhibited the growth and sintering of NiO grains, meanwhile promoting the formation of active Ni2+ and adsorbed oxygen species for activation and oxidation of methane. With the increase of Si content, the existence of surface nickel silicate on NiO further improved the sinter resistance of NiO, but caused the diminish of Ni2+ and surface adsorbed oxygen species. The catalytic activity and stability were co-enhanced via facilely tuning the multiple Ni-Si interactions. The catalyst with abundant SiO4 groups and negligible nickel silicate exhibited considerably higher catalytic activity, sinter-resistance and water-resistance than NiO toward methane combustion.
Keyword ：
Catalytic activity Catalytic activity Methane combustion Methane combustion Multiple Ni-Si interaction Multiple Ni-Si interaction NiO-based catalysts NiO-based catalysts Thermal stability Thermal stability
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| GB/T 7714 | Wang, Zhixiong , Tang, Chenyao , Lin, Jia et al. Promoting methane combustion activity and stability by tuning multiple Ni-Si interactions in catalysts [J]. | FUEL , 2023 , 349 . |
| MLA | Wang, Zhixiong et al. "Promoting methane combustion activity and stability by tuning multiple Ni-Si interactions in catalysts" . | FUEL 349 (2023) . |
| APA | Wang, Zhixiong , Tang, Chenyao , Lin, Jia , Zheng, Yong , Xiao, Yihong , Zheng, Ying et al. Promoting methane combustion activity and stability by tuning multiple Ni-Si interactions in catalysts . | FUEL , 2023 , 349 . |
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本发明提出一种逆流整体式催化燃烧与吸热反应耦合的反应系统，所使用的整体式催化燃烧‑吸热反应耦合反应器呈竖向的柱形体，其底端处设有可燃气体入口，顶部设有原料气入口，柱形体内整体式催化燃烧固定反应床与吸热反应床均呈环形柱状，两者的环层以交替套叠方式形成套层耦合结构；可燃气体经第二换热器预热至催化燃烧反应温度后，进入整体式催化燃烧固定反应床环层燃烧并加热吸热反应床环层，其燃烧尾气返回第二换热器作为热源冷却后排出；所述原料气经第一换热器预热后进入吸热反应床环层进行反应，其气态反应产物经吸热反应床的产物出口返回第一换热器作为热源冷却后输入收集装置储存；本发明能够将低浓度可燃气体治理与吸热反应相互结合。
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| GB/T 7714 | 蔡国辉 , 王智雄 , 林立 et al. 一种逆流整体式催化燃烧与吸热反应耦合的反应系统 : CN202210396416.4[P]. | 2022-04-15 00:00:00 . |
| MLA | 蔡国辉 et al. "一种逆流整体式催化燃烧与吸热反应耦合的反应系统" : CN202210396416.4. | 2022-04-15 00:00:00 . |
| APA | 蔡国辉 , 王智雄 , 林立 , 罗宇 , 陈崇启 , 肖益鸿 et al. 一种逆流整体式催化燃烧与吸热反应耦合的反应系统 : CN202210396416.4. | 2022-04-15 00:00:00 . |
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